500 J of work are done in 4 seconds to lift a 40 kg box to the top of a high shelf. How much power was required to complete the lift?

If 120 N of force is applied to a crate to move it 15 m, how much work is done? 1,000 J 1,800 J 2,000 J 2,500 J

The planet earth consists of land formations, large masses of water, gases in the atmosphere, and living organisms. From a scientific perspective, which makes the planet earth a system? A. The planet earth contains both matter and energy. B.

Bart ran 5000 meters from the cops and an average speed (velocity) of 6 meters / second before he got caught. how long did he run?

A car is moving at a rate of 72 km/hr. How far does car move when it stop after 4 seconds?

A straight section of silver wire has a cross sectional area A=2.0 mm2. A total of 9.4*1018 electrons pass through the wire in 3.0s. The conduction electron density in silver is 5.8*1028 electrons/m3.

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)