Why do stars have names

What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high? The potential energy isJ.

A spherical shell has an inner radius of 3.7 cm and an outer radius of 4.5 cm. If charge is distributed uniformly throughout the shell with a volume density of 6.1*10-4 C/m3 the total charge is

A batter hits a 0.140-kg baseball that was approaching him at 40.0 m/s and, as a result, the ball leaves the bat at 30.0 m/s in the direction of the pitcher. what is the magnitude of the impulse delivered to the baseball

In the 1950s and 1960s technology such as television and satellites revolutionized life in many big and small ways. Which was one of the results?

How has the concept of a "planet" changed since the 16th century before the invention of the telescope? Do you think this shows scientific accuracy or disproves future facts, as one assumes that they will be discredited in time too?

A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

Now assume that the pitcher in Part D throws a 0.145-kgkg baseball parallel to the ground with a speed of 32 m/sm/s in the + x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line.

How far away is a cliff if an echo is heard 0.486 s after the original sound? Assume that sound traveled at 343 m/s on that day.

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Minerals such as sulfur can sometimes be identified by colors, true or false.