Aman walks foward on a bus. to a stationary obserrver, the bus moves east at a speed of 18 m/s if the man moves 1.5 m/s wast relative to the bus. what is his velocity in the frame of reference of a stationary observer?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?