The specific heat of iron is 0.11 cal (g°

c. a cafeteria fork made of iron has a mass of 20 grams. how much heat energy is needed to raise the temperature of this fork from 25°c to 75°c?

When a metal wire has an electric field applied, electric current flows. a) If we consider the path the electrons take through the wire in response to the electric field, explain why that path is not the shortest distance between the ends of the

Is it possible to get a bruise inside your body?

A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. How much power was used?

Two countries that go through Tropic of Cancer

Water moves from Earth's surface to the atmosphere and back to Earth's surface again in a process known as the water cycle. Which of the following is the major form of energy driving the water cycle? A. nuclear energy B. geothermal energy C.

Which best describes oil and water

Both the electrical force and the gravitational force between two objects share which relationship? They are directly proportional to mass. They are inversely proportional to the square of the distance. They are inversely proportional to charge.

During a baseball game, a player hits a a ball with a speed of 43m/s at an angle of 25∘ above the horizontal. When the player hit the ball, it was 1m above the ground, and after the hit, the ball flies straight toward the center field fence.

How does the electric potential energy change as the electron moves from i to f?

A sound wave travels twice as far in neon (Ne) as it does it krypton (Kr) in the same time interval. Both neon and krypton can be treated as monatomic ideal gases. The atomic mass of neon is 20.2 u, and that of krypton is 83.8 u.