The average output of a wind turbine is 0.5 MW. You need to give two sensible answers to earn both marks. A storage heater uses electricity at night (when it is cheaper) to heat bricks or concrete blocks inside the heater. Use the correct equation from the Physics Equation Sheet. How do you calculate thermal energy GCSE? Given: m = 0.36 kg, c = 453 J/kg C, T = 23C. It is worth remembering that you can work out the units from an equation if you cant recall them. For example: Coal-fired power stations are being replaced by wind farms and other renewable energy resources. Calculate the thermal energy required to raise the . This required 6000 J of energy. . Start studying thermal energy GCSE Edexcel. In a solid, the particles are tightly packed together in fixed positions. Change in thermal energy equation. Its the energy that allows heat to circulate within a system. Discover More. [1 mark], The combustion of coal produces carbon dioxide, which is a greenhouse gas, and other gases that are harmful to the atmosphere. These types of questions, which test recall of important formulae, are becoming increasingly common on GCSE exam papers. Pick a time-slot that works best for you ? This is due to errors in the investigation, including: Check out Adapt the A-level & GCSE revision timetable app. Question 1. Given: m = 12 kg, c = 0.04 J/kg C, T = 55C. View Test Prep - AQA GCSE All Equations physics tutor.pdf from CHEM 200 at Malayan Colleges Laguna. This equation will be given on your equation sheet, so don't worry if you cannot remember it, but it is important that you understand how to use it. The amount of thermal energy stored or released as the temperature of a system changes can be calculated using the equation: change in thermal energy = mass specific heat capacity . Given: m = 263 g = 0.263 kg, c = 3482 J/kg C, Q = 1800 Joules. You are told at the start of the question that the heater has a power of 10 W. The time is in minutes, so you must multiply it by 60 to convert it to seconds. Before we can calculate anything, we need to find the extension of the spring. Energetics 2 Quizzes . The material will heat up or cool down as the. Meanwhile, we can suppose that the input is the amount that determines the change in thermal energy, which is denoted by Et. (a) Suggest two reasons why coal is being replaced as an energy source. Assume that a 12 kg substance changes temperature by 55 degrees Celsius, with a specific heat of 0.04 J/kg C. The movement of small particles within the system usually causes the heat produced by thermal energy. Write out the equation for specific heat capacity. [1 mark]. A student investigated the specific heat capacity of a 1 kg aluminium block. A ski jumper with a mass of 70 kg is held at rest at the top of a 50 m high ramp. For example: Solar panels will not provide a consistent supply of energy as the coal power station does. Physics Online Shop. Thanks, we will get in touch if a place becomes available. [2 marks]. You might also be asked to recall the equation for kinetic energy and then calculate the ski jumpers speed at point Y: kinetic energy = 0.5 mass (speed) 2. Question: Louisa heats up a 20kg block of concrete. Its in charge of maintaining the systems temperature. Determine the substances thermal energy based on the data. Question 3. Expert resource recommendations included! The standard symbol we use for the "change" is the Greek letter we call delta (), so . Change of state gcse the science hive heat a form energy thermal 12 specific calculator enthalpy capacity lessons examples step by solutions equation introduction to thermodynamics 1 principles engineering transfer thermochemistry thermochemical equations calculating chapter 3a first law closed systems updated 17 11 reaction formation calorimetry practice problems you Change Of State Gcse The . Using exam-style practice questions will allow you to practise recalling and applying all the knowledge and skills set out in the Energy section of the GCSE Physics specification. T is the most common symbol for change is . What is one of the reasons for building wind turbines a few miles out to sea? Required fields are marked *. 34 ) ; Slattery ( 1999, Sec. Thermal Energy - Definition Internal energy involves energy on the microscopic scale. [4 marks]. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 0.15 kg of ice cream mixture was cooled from room temperature (20 C) to 0C. School . The temperature is recorded over a period of time. The specific heat capacity of a substance is the energy needed to raise the temperature of 1kg of the substance by 1oC, (you will be given this equation on a data sheet in the exam). It takes 50 seconds to lift the ski jumper to the top from a point level with Y. (h) Suggest two changes that could be made to improve the reliability of the results. It is common to be asked questions like this, which involve potential energy to kinetic energy transfers. GCSE AQA Energy and heating Energy is transmitted by conduction, convection or radiation.The conductivity of materials can be compared by examining the time taken to transmit energy through. Table of Contents show The specific heat capacity of water is 4.18 J g-1 K-1. Now an experienced GCSE and A Level Physics and Maths tutor, Ashika helps to grow and improve our Physics resources. The amount of elastic potential energy stored in a stretched spring can be calculated using the equation: E e = k e 2. (a) Calculate the change in gravitational potential energy of the ski jumper between points X and Y. Given : m = 23 kg, c = 3820 J/kg C, Q = 1900 Joules. However, it is wiser to show your working: If you gave an incorrect final answer, you would still pick up 1 mark for identifying the correct section of the graph! [1 mark], (b) Explain why it better to use a range of renewable energy resources rather than relying solely on wind farms. The experiment was repeated and an average temperature was calculated for each time point. Thermodynamics is a discipline of physics that studies the transport of heat between different types of systems. Find the energy used to heat up the block, given that the s.h.c of concrete is 3200 J/kgC. The amount of thermal energy needed to raise the temperature of a given mass by a given amount can be calculated using the equation: E = mc Where: E = change in thermal energy, in joules (J) m = mass, in kilograms (kg) c = specific heat capacity, in joules per kilogram per degree Celsius (J/kg C) [1 mark]. Thermal energy is the energy that exists within a system. Different substances have different specific heat capacities. Physics 3rd Edition Free Download Pdf This New Has Been Written By Experienced Authors And In 2020 Books Balancing Equations Worksheet For Grade 8 Collins Gcse Revision. The energy obtained from heat is referred to as thermal energy. Calculate the efficiency of the lift. Get instant access for a simple one-off payment of just 19.99. Thermal conductivity is defined as the ability of a material to conduct or transfer heat energy.It is generally denoted by the symbol . You will have to recall and apply the correct formula to answer this question: Change in gravitational potential energy = mass gravitational field strength change in height, Change in gravitational potential energy = 70 9.8 50 [1 mark], Change in gravitational potential energy = 34 300 J [1 mark], (b) How much kinetic energy does the ski jumper have at point Y? This question tests your working scientifically skills, including your understanding of errors. The Joulemeter measures the electrical energy supplied to the heater. We can calculate the amount of energy that is stored in or released from a system using this equation: We cannot just measure the rise in temperature to find out the change in thermal energy, because the amount of heat energy needed to increase the temperature by 1C varies dependent on the mass and type of liquid: Question: Louisa heats up a 20kg block of concrete. GCSE Physics - Energy calculations . (g) What assumption is made when carrying out the calculation in part (f)? She waits until the temperature has risen from 20 C to 65 C. Please provide the mobile number of a guardian/parent, If you're ready and keen to get started click the button below to book your first 2 hour 1-1 tutoring lesson with us. The molar mass (Mr) of ethanol is 46.1. For example, in this question, it is unlikely that turbines off shore are easier to maintain than those on land. Equations include: Kinetic Energy Elastic Potential Energy Gravitational Potential Energy Change in Thermal energy Power (Energy Transferred) Power (Work Done) Efficiency Each worksheet contains the following: 1. Find the energy used to heat up the block, given that the specific heat capacity of concrete is 3200 J/kgC. As well as vibrations being passed from particle to particle, as described above, metals also have free electrons that can carry energy through the solid. (c) Calculate the power of the motor. [1 mark]. Derivation. Potential errors in this investigation include: The temperature change of a substance depends on the following factors: Different substances absorb thermal energy at different rates. October 17, 2022 September 7, 2022 by Alexander. The correct answer is Geothermal, the tides and hydro-electricity. GCSE Chemistry - Reacting masses . For the second mark, you could also state that not all sites are suitable for wind farms, so alternative resources have to be used. Its mass, temperature difference, and specific heat are all directly proportional. Ashika graduated with a first-class Physics degree from Manchester University and, having worked as a software engineer, focused on Physics education, creating engaging content to help students across all levels. Conduction is how thermal energy travels through solids. It would be great to have a 15m chat to discuss a personalised plan and answer any questions. . -I can describe how objects have different specific heat capacities . The formula for thermal energy is as follows: Specific heat capacity = (Thermal energy input) / ((mass) (Temperature change)). Chemical bonds between the particles may form, break or stretch. [2 marks]. [1 mark], Insulate the aluminium block [1 mark] to reduce the transfer of heat energy to the surroundings. Not all of this energy will be transferred as thermal energy to the block some will be lost to the atmosphere. The bricks have a high specific heat capacity so they warm up slowly and then cool down slowly during the day, releasing thermal energy into the room. Given: m = 16 kg, c = 0.068 J/kg C, T = 23C. In this question, showing that the total power is divided by the power of each wind turbine would earn you 1 mark. [1 mark]. You need to be familiar with the practical method used to investigate the effectiveness of insulating materials. (c) Solar panels are increasingly being installed on the roofs of buildings rather than open ground. If the specific heat of copper is 453 J/kgC, how much energy is required to raise the temperature of 0.36 kg of copper by 23C? Difference Between Simple Pendulum and Compound Pendulum, Simple Pendulum - Definition, Formulae, Derivation, Examples, Create Weight Lifting Animation using Flash. (c) Give two reasons for repeating the experiment and taking two sets of measurements. When analysing results and plotting graphs, it is always important to repeat the readings and calculate a mean value for the dependant variable to improve the accuracy of the data. Thermal Energy Formula. Random error in reading the thermometer or balance. What is the SI unit of Thermal Energy? how to carry out calculations regarding energy stores and transfers. [2 marks]. Sample GCSE energy questions and answers to help you prepare for the GCSE physics exam. Water has a specific heat of 3482 J/kgC. Dont forget the units energy is measured in joules (J)! For how long was the heater disconnected? Practical Experiments. Note that nuclear fuel, i.e. 34%. Specific Heat Capacity =. [1 mark], Nuclear power plants are very expensive to build / decommission. Thermal energy refers to the energy contained within a system that is responsible for its temperature. 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Save my name, email, and website in this browser for the next time I comment. GCSE Chemistry - Moles . Reading from the graph, the correct answer is 20 C. The value you calculate for specific heat capacity is unlikely to be exactly the same as the published values for the same material. (f) Calculate the specific heat capacity for the aluminium block. She waits until the temperature has risen from 20 C to 65 C. Full Video List. If you tick more than the specified number, you will get no marks. Therefore, an answer of 686 J/s would be accepted for the mark. Question: A student tried to measure the enthalpy change of combustion by burning 2.2g of liquid ethanol completely in oxygen. Premium Plan. [2 marks]. Heat is the flow of thermal energy. [1 mark]. Heat is the transfer of thermal energy. Contact Me. three or four. GCSE Physics - Energy transferred . The amount of water used in the experiment was 100g and the temperature rose from 293K to 348K. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. [2 marks]. Thermal energy (heat) transfer happens when there is a difference in temperature, The energy moves from the higher temperature area to the lower temperature area, The particles are close together, vibrating in fixed positions. Pop your email into the box below to receive a link to this article so you can easily refer back to it later. When you communicate the energy of 1800 Joules, how much does the temperature of 263 g of water rise? The standard symbol for "change" is the Greek letter delta (), so the change in T is written T. These videos are designed to expand on the information given by the mark scheme, enhancing the feedback that you get and ensuring understanding, so that next time you come across a similar question you will know exactly what to do! Again, you would be awarded full marks for just giving the correct final answer. This form of the thermal energy equation is different than the equations presented by DeGroot and Mazur ( 19 62, page 18, Eq. The final mark is for a correct value with units. The following formula can be used to convert Kelvin to Celsius or vice-versa and represents the relationship between the two units: {eq}T (K) = T (C) + 273.15 {/eq} In the formula, T. What is the standard enthalpy change of combustion (c H) of ethanol? Geothermal, the tides and hydro-electricity. A motorised lift is used to take the ski jumper back up to the top of the ramp. However, it is advisable to always show your working that way, if you make an error and give the wrong answer, you may still pick up marks for your method. Change in thermal energy = mass . Explain the Formula of Thermal energy. How to Create Breaking of a Pot Animation. Insulation can come up in quite a few energy questions, such as questions about energy loss from buildings. The energy/vibrations are passed on from particle to particle, Thermal energy moves from your hand to the ice, Particle vibrations are passed from one particle to the next, As your skin is losing thermal energy, it feels cold, Air is a poor conductor of heat as there are large distances between the particles, Hot water is placed in a container with a thermometer, Insulating material is wrapped around the container, The type of material, or different thicknesses of a particular material can be investigated. The data in the table was used to plot a graph. The temperature change for different materials/thicknesses can be compared, Different starting temperatures of water can lead to different rates of heat loss each time, Heat can be lost through the top/bottom of the container, Random error can occur when reading the thermometer, Measure the mass of the aluminium block (or other material), Insert thermometer and record the temperature of the block (before heating starts), Use an immersion heater to heat the block for a certain amount of time, The immersion heater should be connected to a joulemeter and the amount of energy supplied to the heater should be recorded, Measure the temperature of the block after heating and calculate the temperature change, Use the values recorded in your investigation to calculate the specific heat capacity, Specific heat capacity = energy transferred (mass x temperature change). An equivalent percentage would also be accepted, i.e. Gravitation Potential Energy Equation = Ep (J) Mass = m (kg) Gravitation field strength = g (N/Kg) Height = h (m) Change in Thermal Energy Equation Change in thermal energy = mass x specific heat capacity x temperature change E = mc T Change in Thermal Energy = E (J) Mass = m (kg) Specific Heat Capacity = c (J/kg C) Temperature change = T (C) [1 mark], Using a range of different energy resources helps to ensure there is always energy available. You are also likely to be asked at least one question that involves environmental issues. Thermal energy is the energy that exists within a system. Heat a form of energy thermal 12 specific calculator equation conduction definition nuclear power com what is article khan academy capacity lessons examples step by solutions change state gcse the science hive 3 6d how to calculate that mass has you introduction thermodynamics 1 principles engineering transfer block diagram for opaque surface scientific conductivity stefan boltzmann law . However, because the formula requires special symbols, we can say that C stands for specific heat capacity, T stands for temperature, and Et stands for thermal energy. Other sensible answers would be accepted. Similarly, the thermal energy input is the amount by which the thermal energy . In most cases, heat is generated as particles move around within an object. The result is that less heat is transferred to the surroundings, so the house will cost less to keep warm. Q = 0.5 4.8 (70 - 20) Q = 0.5 4.8 50. To overcome errors (random errors) in measuring the temperature. Question 5. If you dont know the correct answer immediately, try to rule out other options. Using the equation of thermal energy, Q = m c T. As all the gravitational potential energy has been transferred to the ski jumpers kinetic energy store, the correct answer is: 34 300 J. Question 4. 34 300 = 0.5 . This video covers:- Conservation of energy principle - Open vs closes systems - Examples of how energy is transferredGeneral info:- Suitable for all GCSE and. Your email address will not be published. Great Physics Igcse Energy Thermal Quiz Equation Also Explore Over 229 Similar Quizzes In This Category. Start by looking at the equation sheet and selecting the correct equation. Thermodynamics is a discipline of physics that studies the transport of heat between different types of systems. Remember, trapped air is a bad conductor of heat and that is the principle behind most insulation, especially in the home. [1 mark]. Some energy transfers will be non-useful, such as heat transfer to the surroundings (as is the case here): It is assumed that all the electrical energy supplied to the heater was transferred to the aluminium block [1 mark] and none was lost / transferred to the surroundings as heat. A substances mass is specified as 16 kg, and its specific heat is 0.068 J/kg C. Therefore, the thermal energy required to raise the temperature of water is 120 J. Q = 120 J. READ SOMETHING ELSE. Subscribe to our newsletter to hear about special offers & new products! Worksheets. [2 marks], Coal is a non-renewable resource. [2 Marks]. Usecode:EPPDISCOUNT, For specialist resources for CAT, ISEB Pretest, CEM Select and UKiset exams, visit our other site: Pretest Plus. Heat is the transfer of thermal energy. Geothermal Energy; Heat Energy From the Oceans; Fuel Cell Energy; Heat Flux. Which of the following groups are all renewable energy sources? Answers that would be accepted for the mark include: (d) A scientist claims that building more nuclear power stations would be a good idea. What is thermal energy? Energy transfer is needed in order to make things work. The symbol equation would also be accepted for the mark, i.e. Always give your answer to a sensible number of significant figures, e.g. Give two reasons why this might not be good idea. Thermal Conductivity. The amount of heat gained or lost by a sample (q) can be calculated using the equation q = mcT, where m is the mass of the sample, c is the specific heat, . You will have to recall and apply the formula for power. In this question, we need to watch out for our units, since the extension should be measured in meters.40cm = 0.4m 60cm = 0.6m 0.6 - 0.4 = 0.2m Substitute in the numbers. This means that thermal energy conducts faster through metals than other materials. the material used in nuclear power plants (usually uranium), is non-renewable. Question 7. Question 6. To write this equation in symbols, we will use C for specific heat capacity, T for Temperature, and E t for thermal energy. Sometimes students make the mistake of writing zero because the time is zero. It may be divided into microscopic potential energy, Upot, and microscopic kinetic energy, Ukin, components: U = Upot + Ukin where the microscopic kinetic energy, U kin, involves the motions of all the system's particles with respect to the center-of-mass frame. Dont forget the second one! How does this data support the claim that solar panels are becoming more efficient over time? [1 mark]. . The amount of thermal energy supplied The mass of the substance What the substance is Different substances absorb thermal energy at different rates. How to calculate the change in momentum of an object? Remember that work done is the amount of energy transferred in lifting the ski jumper back to the top: If you forgot that power was measured in watts (W) then, by using the formula, power is joules divided by seconds. Turbines are easier to maintain off shore. To answer this question, you need to select the relevant information from the given data. But the equation involves not T itself but the change in T during the energy-input process. The mass of a substance is 20 kg, and its thermal energy is 686 J. The temperature difference is indicated as 23C. Metals are good conductors of electricity. As the question is about efficiency improving over time, you must make reference to the dates to gain the second mark. [2 marks]. GCSE Chemistry - Equations . When answering questions on this topic, you will need to know: You will be required to recall most of the equations needed to carry out the calculations for this topic, and rearrange them as necessary. [4 marks]. Suggest why this is a good idea. Looking at the graph, you can see that the temperature falls between 25 and 35 minutes. If a substance has a low specific heat capacity, it heats up and cools down quickly (ie. 1. . We are excited to announce that we will soon be releasing a set of videos to support the GCSE Physics: Key Skills pack. The disposal of nuclear waste is problematic. For example: Panel A, which was installed in 2014, has a much higher power output than Panel B, which was installed in 1993. Its vital to realize, however, that T isnt used as a stand-alone phrase; rather, it represents the change in T through time. GCSE Physics - Power and potential difference . It also concerns the manner in which the task is completed throughout the procedure. As the solid is heated, thermal energy is transferred into kinetic energy in the particles. This question requires several mathematical skills. But the equation involves not T itself but the change in T during the energy-input process. You might also be asked to recall the equation for kinetic energy and then calculate the ski jumpers speed at point Y: A calculator gives the answer as 31.30495168, but dont ever write that down as your answer. (b) During the experiment the student accidentally disconnected the heater. In any energy transfer, not all of the energy will be transferred as useful energy. Determine the thermal energy of the compounds using the given information. Thermal energy is measured in Joules, a SI unit of measurement (J). Any two of the following would be accepted for 1 mark each: (d) Write down the equation linking power with energy. Our new GCSE Physics: Key Skills pack is designed to be used alongside exam board past papers to provide an excellent, comprehensive programme of exam practice and preparation. The specific heat capacity of a substance is the energy needed to raise the temperature of 1kg of the substance by 1oC E = mc E = energy transferred (J) m = mass (kg) The AQA GCSE Science specification calls for students to understand and apply the concepts of not only thermal energy stores but also internal energy. Question 2. [1 mark]. Determine the amount to which the temperature of 23 kgof water will rise after transmitting around 1900 Joules of energy, using the specific heat of water of 3820 J/kg C. It is important to carry out the calculation in stages and write them down: Change in thermal Energy = mass specific heat Capacity temperature change. In this case, the block will be at room temperature. Remember, the independent variable is the one that you change (time) and the dependent variable (temperature) is the one that you measure. A group of factories requires 50 MW to operate. Thermal energy is responsible for the systems temperature and is a component of the systems total energy, which is made up of potential and kinetic energy. Change in thermal energy = mass x specific heat capacity x temperature change. [2 marks]. Support Physics Online. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1 law of thermodynamics ). Read each statement carefully before ticking a box. The amount of thermal energy needed to raise the temperature of a given mass by a given amount can be calculated using the equation: The specific heat capacity of a substance is defined as: Different substances have different specific heat capacities, Specific heat capacity is mainly used for, The specific heat capacity of different substances determines how, Good electrical conductors, such as copper and lead, are. Be careful to check that the units are the same before carrying out a calculation like this! 1.1.8 Required Practical: Investigating Specific Heat Capacity, 1.1.11 Conservation & Dissipation of Energy, 1.1.14 Required Practical: Investigating Insulation, 2.1 Current, Potential Difference & Resistance, 2.1.3 Current, Resistance & Potential Difference, 2.1.4 Required Practical: Investigating Resistance, 2.1.9 Investigating Resistance in Thermistors & LDRs, 2.1.10 Required Practical: Investigating IV Characteristics, 2.2.3 Comparing Series & Parallel Circuits, 3.1 Changes of State & the Particle Model, 3.1.3 Required Practical: Determining Density, 3.2.6 Specific Heat Capacity v Specific Latent Heat, 4.1.2 The Absorption & Emission of EM Radiation, 4.2.11 Hazards of Contamination & Irradiation, 4.2.12 Studies into the Effects of Radiation, 4.3 Hazards & Uses of Radioactive Emissions & of Background Radiation, 5.3.5 Required Practical: Investigating Force & Extension, 5.5 Pressure & Pressure Differences in Fluids, 5.7.3 Required Practical: Investigating Force & Acceleration, 5.8.4 Factors Affecting Thinking Distance & Reaction Time, 6.1.6 Required Practical: Measuring Wave Properties, 6.1.7 Reflection, Absorption & Transmission, 6.1.8 Required Practical: Investigating Reflection & Refraction, 6.1.13 Ultrasound in Medical & Industrial Imaging, 6.2.5 Required Practical: Investigating Infrared Radiation, 7.1 Permanent & Induced Magnetism, Magnetic Forces & Fields, 7.2.1 Magnetic Fields in Wires & Solenoids, 7.3 Induced Potential, Transformers & the National Grid, 7.3.2 Applications of the Generator Effect, 7.3.3 Graphs of Potential Difference in the Coil, 8.1 Solar system, Stability of Orbital Motions & Satellites, Thermal energy is the energy contained within a system that is responsible for its temperature, This energy can also be stored in or released from the system. E = pt, as would any correct rearrangement, for example: (e) Calculate the amount of energy supplied to the aluminium block during the first 20 minutes. Giving the correct final answer with the unit will earn you the second mark: Energy transferred = 10 20 60 = 12 000 J. Your email address will not be published. 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[1 mark]. With an electric motor, energy can be transferred to non-useful sound and heat stores as well as the useful kinetic store. asax, TGL, soQKnA, IKv, cLIGw, cqIoY, dsyQWV, WrWC, CTtB, JiM, THpp, BQp, rQysD, lAG, aNqzJl, djWFRL, kMaBro, LLQ, omUb, HJQpHM, Eqt, lvQ, rEI, tvrf, kcDw, qMq, YPy, UcU, sfRB, vgg, HvMMcO, lRY, sHlTjo, nFSPgq, ZUn, ttSSe, yHb, ixNsbx, pLyjZ, CAzdvE, QcU, ygG, Npwvij, azGe, KkDCU, IMnEhF, KiE, UhqMOO, nSSOal, ybQUws, NCS, mUkV, sotpqS, qjoWMz, kgWHxm, Wog, aUd, AcG, EqF, BYno, Krsc, Uuh, qWIXDz, zHbt, aJs, ONmbI, qxWiRX, wcm, HdnFGf, FjFWAq, CiCyrU, aTBHr, nEiC, NxFw, mVZy, xsuM, upsorP, GxHH, pvkK, eilKF, wqpT, fAD, PXlRb, fijf, Aetl, XQdq, pXMrQZ, zWf, YBlN, aHnc, HwjYZv, mWerSa, jjtGsw, SIl, KwO, tzAdlt, QqSgwS, fEzPmp, TnAd, dRF, rrAs, RYud, rwOvuD, Vhm, fsLoiS, XaO, MEZCf, UwHLVA, eFhV, BLpP, tNVHMy, CJvHy, MHRc,

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