When using a film camera, what must you do to bring an object into focus?

a. move the lens toward or away from the film.

b. close the diaphragm.

c. adjust the speed of the shutter.

d. adjust the angle of the mirror.

What is the different features between the bar magnet and the horseshoe magnet?

Conditions for equilibriam

An electron moving parallel to a uniform electric field increases its speed from 2.0 * * 1077 m/sm/s to 4.0 * * 1077 m/sm/s over a distance of 1.3 cmcm. What is the electric field strength?

When many atoms are split in a chain reaction, a large explosion occurs. This is an example of what type of energy conservation

Rank the following from greatest energy to the least: a. A stationary 2kg ball 2m off the ground. b. A stationary 1kg ball 1.5m off the ground. c. A 1kg ball moving 3m/s, 2m off the ground. d. A 2kg ball moving 4m/s, 1.5 off the ground.

At what temperature did the substance in the test tube into a solid?

What occurs when the velocity of Earth is doubled? a. The orbit of Earth around the Sun becomes smaller b. The orbit of Earth does not change c. The Earth escapes the Sun d. The orbit becomes more elliptical

When is a body said to be at rest

27. Calculate the impulse when an average force of 10 N acts on a cart for 5.0 s.

A boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him