How many hertz vibrations are in a tuning fork for the musical letter f?

What tells scientists about distant galaxies? a. How fast light travels c. The color of light that they give off b. If the are opaque or transparent d. The kind of radio wave they give off

What minerals attracts iron nails?

What causes rainbows?

Ships A and B leave port together. For the next two hours, ship A travels at 28 mph in a direction 32° west of north while ship B travels 24° east of north at 35 mph.

When a current flows through a metal wire, the moving charges are?

How does the resistance of the following change with rhe rise in temperature? pure metals and German silver and carbon

A ball thrown straight upwards with an initial velocity of 15 m/s. Calculate how long the ball will remain in the air and the maximum height the ball reaches?

What is the upward force of the floor on the toes of one foot?

What is the difference between nuclear energy and light energy?

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius