The law of reflection states that if the angle of incidence is 39 degrees, the angle of reflection is ___ degrees.

In general, how do the densities of a material in solid and liquid form compare?

How many minutes does it take light from the sun to reach earth? (the distance from the sun to earth is 93 million mi; the speed of light = 3.00 ✕ 108 m/s.) ?

How do you communicate to a deaf person.

Which best explains why trees are considered a renewable resource?

During the course of trajectory the horizontal component of the velocity is; A) constant B) increasing C) decreasing D) negative

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters

Imagine you are in a music concert. What different sounds might you hear? How are these sounds made?

Dose aloe Vera grow in the mesa?

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.

What is the unit for force we use when calculating F=ma?