The power of a machine measures

A. its rate of doing work.

B. its strength.

C. the force it produces.

D. the work it does.

The heating of groundwater forms Select one: a. wells b. caves c. geysers d. sinkholes

When a baseball is thrown straight upward, what is its acceleration at its greatest height? a. 9.8 m/s2 upward b. 9.8 m/s2 downward (my answer?) c. 0 m/s2 d. 9.8 m/s2 horizontally

What occurs when an object vibrates in response to sound waves of a certain frequency?

A heated box is hanging in a thermal vacuum chamber. The box is 6" x 6" x 6". It is made of aluminum and painted with A-276 white paint. The box is of uniform temperature and is raised to 100oC using its own heaters. How much power is required

What is the main reason why many nuclear power plants are located near bodies of water? to wash wastes out of the power plant to be close to shipping lanes for frequent fuel delivery to have easy access to a coolant for the reactor to avoid problems

What is the oxidation state of a hydrogen atom bound to an iron atom.?

What evidence can you present for the possibility of time travel?

A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.

What was the change in internal energy (chemical energy plus thermal energy) of the person pulling the block?

One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15 feet. what is the area of the kite?