How can the earths mantle flow by convection if it is a solid?

A revolutionary war cannon, with a mass of 2240 kg, fires a 15.5 kg ball horizontally. The cannonball has a speed of 131 m/s after it has left the barrel. The cannon carriage is on a flat platform and is free to roll horizontally.

Must two quantities have the same dimensions if you are multiplying them?

If an object increases speed from 4 meters per second to 10 meters per second in 3 seconds, what is the acceleration of that object

Of all blast mitigation measures which is the most effective

The light reflected from the surface of a pool of water is observed through a polarizer. How can you tell if the reflected light is polarized?

A falling skydiver opens his parachute. A short time later, the weight of the skydiver-parachute system and the drag force exerted on the system are equal in magnitude.

Consider the expression below. Assume m is an integer. 6m (2m + 18) Enter an expression in the box that uses the variable m and makes the equation true. (Simplify your answer completely. If no expression exists, enter DNE.)

What could be put into the center section of this Venn diagram?

Give two factors that will increase the magnetic field strength of an electromagnet

What is an example of total internal reflection at work?