Distances in space are mesured by using

A astronomical units

B megameters

C parsecs

D the speed of light

The box moves at a constant speed. If the mass of the box is 4.0 kg, and it is pushed 2.2 m vertically upward, the coefficient of friction is 0.35, and the angle θ is 37°. What is the work done by the force, F? Use g = 10 m/s2.

Mg emits radiation at 285 nm. Could a spectroscope be used to detect this emission?

Monochromatic electromagnetic radiation illuminates an area of a surface. The electric and magnetic fields of the waves are then doubled in magnitude.

Bored, a boy shoots his pellet gun at a piece of cheese that sits on a massive block of ice. On one particular shot, his 1.2-g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop.

A body moving at. 500c with respect to an observer disintigratesinto two fragments that move in opposite directions relative to their center ofmass along the same line of motion as the original body. Onefragment has a velocity of.

What conditions in the nucleus are likely to result in the nucleus breaking apart? A. When the repulsion of the strong force is weaker than the repulsion of the electrostatic force B.

What color do you see when all colors of light are reflected

A ball is thrown with a velocity of 20 m/s at an angle of 60 degrees above the horizontal. What is the horizontal component of its instantaneous velocity at the the exact top of its trajectory?

You pull on a wagon resting on the sidewalk. What will happen next. A. The wagon does not move because the wagon applies more force to you than you apply to the wagon. B. The wagon moves because you apply more friction to the ground. C.

If someone travels 3000 feet in one second, how far will it travel in 18 minutes