Suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how much work (in j) is needed to stretch it from 35 cm to 40 cm?

Describing Waves Match the description to the correct term. longitudinal wave transfers energy perpendicular to the direction of wave motion transverse wave transfers energy parallel to the direction of wave motion wave a disturbance that carries

How do I Determine the quantity of work done when a crane lifts a 100-N block from 2 m above the ground to 6m above the ground

What happens to the force of gravity between two masses if they are moved closer? Select one: a. It increases. b. It decreases. c. It stays the same. d. It fluctuates.

The coefficient of kinetic friction between a suitcase and the floor is 0.272. You may want to review (Pages 196 - 203). Part A If the suitcase has a mass of 80.0 kg, how far can it be pushed across the level floor with 660 J of work

Whenever there is a change of state, such as a solid to liquid or liquid to gas, heat energy can be added without a temperature change because?

Technician A says that engine parts should be be cleaned before a thorough test can be done to detect cracks. Technician B says that pressure testing can be used to find cracks in blocks or cylinder heads. Who is right?

How are mathematics and science related?

Radio telescopes detect waves with a wavelength of roughly 10 m. True False

2. A 0.30 kg ball is dropped onto a concrete driveway. The ball's velocity before impact is 4.5 m/s and after impact is 4.2 m/s. What is the change in the ball's momentum?

If we start with 400 atoms of a radioactive substance, how many would remain after one half-life? After 2 half-lives? After 3 half-lives? After 4 half-lives?