What is the energy source that heats a contracting protostar?

On earth, a block is placed on a frictionless table on earth. When a horizontal force of 10 N is applied to the block, it accelerates at 5.3 m/s2. Suppose the block and table are set up on the moon.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

A wire of length L is wound around an iron cylinder mounted on a base. The two ends of the wire are connected to a battery via a switch that is initially open. A metal ring with a diameter larger than that of the cylinder sits on top of the coil.

At an average speed of 24.6 m/s, how far do you travel in one day

What is the magnitude and direction of an electric field that exerts a 2.00*10-5N upward force on a - 1.75μC charge?

How can the same material bend in one situation but break in another

According to Newton's first law of motion, what would happen to a car traveling at a constant velocity of 55 MPH to the west in the absence of an unbalanced force?

The Appalachian mountain range in the Eastern United States was once much taller than the Rocky mountain range in the Western United States.

Describe how lighting is just like you walking across a carpet and getting shocked

You need to raise a heavy block by pulling it with a massless rope. You can either (a) pull the block straight up height h, or (b) pull it up a long, frictionless plane inclined at a 15∘ angle until its height has increased by h.