Which of the following is true for an object falling to the ground with constant velocity?   I. Potential energy decreases. II. Kinetic energy increases. III. Heat energy increases.     A) I and III B) Only I C) I and II D) Only II E) Only III

Q: 4. Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

A:

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Q: 1a) A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping,…

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Q: 8) A piece of ice at 0°C starts at rest at the top of a ramp and slides down ramp the ice's kinetic…

A: Required : The correct option

Q: A ball is released from a depressed spring as in the diagram shown. Neglecting the 50 cm distance by

A: Given that: Mass of the ball, m=10 kg Compression of spring, x= 50 cm= 0.5 m Spring constant, k=300…

Q: 4-The following data lists the rate at which work is done and the rate of heat generation (both in…

A: W = Work done Q = Heat generated

Q: 4m/s 450 300 a) What is the speed of ball A after the oollision? VA- b) What is the speed of ball B…

A: Given, mass of ball A mA=5 kgvA=4 m/smB=5 kg

Q: Q5/ Discuss the following, in detail 1. The four laws of thermodynamics 2. Macroscopic forms of…

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Q: Object 1 has three times the specific heat capacity and four times the mass of Object 2. The two…

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Q: ) A certain gas is compressed adiabatically. The amount of work done on the gas is 800 J. What is…

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Q: Your body is like an "oven" set to 98 degrees F or 37 degrees C. Questions 6-8 are related to this…

A: Our body is at 370 C which is at a higher temperature than the atmospheric temperature.

Q: a mental patient keeps pushing against the wall for a long time. does this generate heat? 1. only…

A: ANS.  1 and 3

Q: You heat a sample of ice from -20°C to 100°C and gather the data in the table provided. Time (min) B…

A: Heating Curve:  It is used to represent the Endothermic process. An endothermic process is a process…

Q: 2.) A bar of 20.0 grams of aluminum of specific heat 0.215 cal/gramCo is heated from 15.0 Co to 20.0…

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Q: 4.) A material of mass m is heated using 5.00 calories of heat and its temperature rises by one…

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Q: What are the tree statements of the second law of thermodynamics? Write them down briefly.

A: The three statements of the second law of thermodynamics are as follows: 1. Kelvin-planck Statement…

Q: Suppose your favorite TV scientist has equal masses of frozen water (ice) and liquid water. If she…

A:

Q: 12. A block is pushed up a rough ramp, at constant speed, by a force that is parallel to the ramp…

A:

Q: 119. As a thrown baseball is acted on by air friction, the thermal energy of the ball (1) decreases…

A: Kinetic energy decreases over time as frictional force due to air acts on it.

Q: QUESTION 2 If a hypothetical planet without an atmosphere had an atmosphere instantaneously added,…

A: Explanation: Thermal inertia: It can be defined as the property of a material that expresses the…

Q: 23. Some amount of energy is transferred by heat into a system. The net work done by the system is…

A: given data networkdone (dw) = 50 J internal energy (du) = 30 J amount of net heat =?

Q: 9. When an object doubles its speed, the kinetic energy increases by a factor of a) 1 d) 6 b) 2 e) 8…

A: 9. we know that the kinetic energy of an object is defined as  KE=12mv2 where m is the mass of the…

Q: . You find yourself in the middle of a blackout with no electricity. You want to have a cup of tea,…

A: volume of water (V) = 200 cm3density of water = 1 gcm3∆h = 32 cm = 0.32 m Initial temperature of…

Q: 7) A piece of ice at 0°C starts at rest at the top of a ramp and slides down. At the bottom of the…

A: given : the ice's kinetic energy at the bottom of the ramp is lesser than its potential energy at…