Calculate the quantity of heat absorbed by 50 g of water that warms from 30∘c to 90∘c.

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

What happens when a rubber rod is rubbed with a piece of fur?