To calculate the amount of energy transferred by heat to or from an object you must know the mass of the object and what else?

Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration?

Pablo prepares to lift a barbell. During which stage of the lift does Pablo do work on the barbell? when he holds the barbell up above his head when he applies force to the barbell but has not moved it when he lifts the barbell from the floor to his

Your clothing tends to cling together after going through the dryer. Why? Would you expect more or less clinging if all your clothing were made of the same material (say, cotton) than if you dried different kinds of clothing together? Again, why?

A stationary boat in the ocean is experiencing waves from a storm. the waves move at 54 km/h and have a wavelength of 170 m. the boat is at the crest of a wave. part a how much time elapses until the boat is first at the trough of a wave?

A 68 kg student runs up a flight of stairs that is 7 m high in 9 seconds. Calculate how much power is used.

A man weighs 1190 n on earth. what would he weigh on jupiter, where the free-fall acceleration is 25.9 m/s 2? the acceleration of gravity is 9.8 m/s 2. answer in units of n.

What is always true of a single-displacement reaction?

Mrs Garcia traveled 15 km in 1 hour. What was her average velocity in km/s?

Contrast the nucleus and electron in a cloud

For saving lives, what is the most important safely feature on a car a. air bag b. safely belt c. anti-lock brakes