Which of the following is true of friction? A friction makes motion possible on Earth. B. friction has mass and can be held. C. friction is always equal to velocity

Which of these experiments would make use of quantitative data? A. a Study of the different amounts of time it takes water to evaporate completely. B. a Study of the effects of water temperature on fading colors in cloths. C.

Magnet A doesn't have its poles labeled, but Magnet B has a clearly labeled north and south pole. If the two are brought into contact with one another, which of the following could you expect? A.

When the sound source is moving away from the observer, the observer will hear a

Jim releases a compressed spring. Describe the energy transformation taking place in the spring. Potential energy to kinetic energy, and total energy is conserved Kinetic energy to potential energy, and some energy is lost as heat Kinetic energy to

3. An automobile accelerates 1.77 m/sover 6.00 s to reach the freeway speed at the end of an entrance ramp. If the car's final speed is 88.0 km/h, what was its initial speed when it began accelerating? Express your answer in kilometers per hour.

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?