Give an example of a system whose mass is not constant.

1. A spinning top

2. A baseball flying through the air

3. A rocket launched from Earth

4. A block sliding on a frictionless inclined plane

Suppose you have a 113-kg wooden crate resting on a wood floor. (μk = 0.3 and μs = 0.5) (a) What maximum force (in N) can you exert horizontally on the crate without moving it?

Suppose you receive $15.00 at the beginning of a week and spend $2.50 each day for lunch. You prepare a graph of the amount you have left at the end of each day for one week Would the slop of this graph be positive, zero, or negative? Why?

a heating coil offers a resistance of 2.5 k ohm what voltage is required so that 1.5 a of current pass through it

A 120kg defensive lineman tackles a stationary quarterback at 6.5 m/s it takes. 25 seconds for the lineman to completely stop what is the magnitude of force exerted on the lineman during the collision

If a marathon runner averages 9.50 mi/h, how many minutes does it take him or her to run a 26.22-mi marathon?

Choose The units of 1/4πε0 are: A. N2C2 B. N • m/C C. N2 • m2/C2 D. N • m2/C2 E. m2/C2

What does a fern ultimately depend on as an energy source?

According to the Doppler Effect, which statement is true about a sound as it approaches you and then moves away. A) As the source approaches you, the sound waves are compressed so the pitch of the noise increases.

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?

Most of the Earth's volcanoes occuWhen fossils or minerals form, certain unstable elements are sometimes locked into them.