Aforce of 14 n acts on a 5 kg object for 3 seconds.
a. what is the object’s change in momentum?
b. what is the object’s change in velocity?

What is the major limitation to the light microscope?

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm