How much potential energy does a 40-N medicine ball gain when it is lifted 5 m? Select one:

a. 20 J

b. 100 J

c. 200 J

d. 1,000 J

1. in which of the following cases is the wavelength of the emitted radiation greatest? electron jumps from third orbit to second orbit. electron jumps from third orbit to first orbit. electron jumps from fourth orbit to first orbit.

Object a with a mass of 1.5 kilograms is moving with a velocity of 11.2 meters/second (moving in the x direction). it has a perfectly elastic collision with stationary object b that has a mass of 4.5 kilograms.

A particle moving along the x-axis has its position described by the function x = (3.00t3-1.00t 2.00) m where t is in s. at t = 4.00 s what is the particle's velocity?

What is the mass of an object weighing 63N on earth

A neutral atom must have the same number of neutrona and protone, O O A True B False

How does planting trees in urban areas improve air quality and reduce energy use?

A student sitting in a merry-go-round has an acceleration of 3.6 m/s2. If the tangential velocity of the student is 2.5 m/s, what is the distance of the student from the center of the merry-go-round?

A car is traveling at vx = 20 m/s. The driver applies the brakes and the car decelerates at ax = - 4.0 m/s2. What is the stopping distance? A car is traveling at = 20. The driver applies the brakes and the car decelerates at = - 4.0.

Most earthquakes occur along or near the edges of the earth's

What can we say about the rock as it falls to Earth? A) It accelerates as it falls. B) It falls at a constant rate of speed. C) It is at a constant velocity as it falls. D) It accelerates until it reaches a peak velocity, then decelerates.