A motor does 5,000 joules of work in 20 seconds. What is the power of the motor?

What happens to toy cars when the second hill is set to 100 cm? They get stuck between the first and second hill. They roll over the second hill and break the egg. They roll over the second hill but only the 100 g car breaks the egg.

A catapult launches a boulder with an upward velocity of 92 m/s. The height of the boulder, h, in meters after t seconds is given by the function h = - 5t2 + 92t + 16.

Suppose the microphone on an AM radio is not working properly. Which best explains how this will affect the process of amplitude modulation? A. The frequency of the carrier wave will be modified instead of the amplitude. B.

What should a free-body diagram look like for a skydiver that is still speeding up as he falls? There is an arrow up for air resistance and an arrow down for gravity. The arrows are the same length.

A crate is lifted vertically 1.5 m and then held at rest. The crate has weight 100 N (i. e., it is supported by an upward force of 100 N). How much work was done in lifting the crate from the ground to its final position? 1. 150 J2. No work was done.

Sound waves are mechanical waves in which the particles in the medium vibrate ina direction parrallel to the direction of energy transport. What is another name of the type of wave that transfers energy in this way?

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.