Acamera gives a proper exposure when set to a shutter speed of 1/250 s at f-number f8.0. the photographer wants to change the shutter speed to 1/1000 s to prevent motion blur. to maintain proper exposure, she should also change the f-number the answer is f4.0.

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

What sort of waves exhibit the doppler effect?

Nthe 19th century, women were expected to conform to a certain role that entailed a. gaining domestic skills and establishing a career b. going to college and getting married c. getting married and having children d. graduating from college and being a housewife