Which of the following best describes the use of a renewable resource? (2 points)

Group of answer choices

Most power plants burn fossil fuels to generate electricity for use in homes and offices.

Natural gas is extracted from deep in the Earth and piped to customers to use for cooking.

Water falls through openings in a dam turning turbine blades that generate electricity.

We use gasoline to power our cars to get to work and school each day.

The discovery of the electron as a subatomic particle was a result of

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?