The conversion of the initial potential energy of a person on a sled on a smooth icy slope into kinetic energy at the bottom is an example of the principle of conservation of ________.
What will be an ideal response?
energy
total mechanical energy
mechanical energy
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Which domains of life consist entirely or microbes?
A) bacteria only B) archaea and eukarya C) bacteria and archaea D) archaea only
A swimming pool heater has to be able to raise the temperature of the 30,000 gallons of water in the pool by 10.0°C. How many kilowatt-hours of energy are required? (One gallon of water has a mass of approximately 3.79 kg and the specific heat of water is 4186 J/kg • °C.)
a. 1960 kWh c. 1130 kWh b. 1320 kWh d. 216 kWh
Gravitational Potential Energy: An 825-kg space vehicle is circling Earth in a circular orbit with a radius of 10,300 km. Its orbit is to be changed to a larger circle with a radius of 17,400 km. How much energy is required to accomplish this? The mass of Earth is 5.97 × 1024 kg and G = 6.67 × 10-11 N ? m2/kg2.
A. 1.00 × 109 J B. 1.30 × 1010 J C. 6.51 × 109 J D. 4.45 × 109 J E. 4.50 × 1010 J
A gas is placed in a thermally insulated container as shown below
As the piston is slowly lowered, the temperature...