What happens to the molecules of a substance when they gain thermal energy?

multiply or divide to make this English distance conversion. 174 inches = ___ feet (14.5, 58, 2,088, 23)

A box of mass?=21.0 kgm=21.0 kg is pulled up a ramp that is inclined at an angle?=21.0∘θ=21.0∘ angle with respect to the horizontal. The coefficient of kinetic friction between the box and the ramp is? k=0.285μk=0.

In which situation does the law of conservation of momentum apply? A.) In the absence of greatest velocity B.) In the presence of least velocity C.) In the absence of outside forces D.) In the presence of outside forces

In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2. If the car strikes the barrier with a force of 3,250 N, how much resistance force does the barrier provide? N This pair of forces is an example of Newton's law of motion.

What is meant by a charge carrier hole in a semiconductor? Can it be created in a conductor?

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?

As the width of an opening in a barrier increases, how will the amount of diffraction of the planar waves change as they pass through the opening? A. It will increase. B. It will decrease. C. It will remain the same.