Có 6,5 g khí Hydro (coi là khí lý tưởng) ở nhiệt độ 270C, nhận nhiệt và giãn nở đẳng áp, tăng thể tích gấp đôi. Tính nhiệt lượng đã cung cấp cho khối khí trong quá trình này.

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.