The cooled lava pools on the surface of a crater are called what?

1. Craters

2. Terrae

3. Maria

4. Reoglith

17. A simple machine made up of a slanted surface such as a ramp or stairs is called A wheel & axle B wedge C pulley inclined plane

Calculate the frequency of visible light having a wavelength of 410 nm

How is work defined in physics

A small 18 kilogram canoe is floating downriver at a speed of 1 m/s. What is the canoe's kinetic energy?

Suppose that a pane of crown glass, with a refractive index of 1.52, is immersed in water, which has a refractive index of 1.33. A ray of light traveling in the water strikes the glass at 45° relative to the normal and travels through the pane.

A man is standing on the shore of a beach, up to his knees in water. Every 5 seconds a wave breaks on him. What is the period of the wave? A. 12 waves per minute B. 5 hertz C. 5 seconds D. 0.2 hertz

A beam of light with a wavelength 760 nm in air travels in water. The index of refraction of water is 1.33. What is the wavelength in water?

45. An object with a mass of 25 kg accelerates east at a rate of 7 m/s? What fiet force is acting on the object?

The speedometer in your car reads 55mi/h this represents ___ of the car

What is the speed of a plane that traveled 1500 km in 2.5 hours? How far would that same plane travel in eight hours if it maintained a constant speed?