A pendulum makes 40 vibrations in 20 seconds. Calculate its period?

A degausser creates a magnetic field that erases data from magnetic storage media?

How many nanoseconds does it take light to travel a distance of 3.80 km in vacuum? Express your answer numerically in nanoseconds.

a book is being pushed left with 3 N of force, and forward (at a 90 degree angle to the left force) with 4 N of force. what is the net force on the book?

A man is sitting on a chair. Identify the true scenario from the following options: The man exerts a greater downward force on the chair than the upward force exerted on him by the chair.

What is the biggest planet in our galaxy

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?

Most of the Earth's volcanoes occuWhen fossils or minerals form, certain unstable elements are sometimes locked into them.

a man is standing on the edge of a 20.0m high cliff. he throws a rock vertically with an initial velocity of 10.0m/s. how high does the rock go?

The slope of a velocity time graph over any interval of time gives the during that interval

if light travels in a vacuum at 3.00 x 10^8m/s and its frequency is 7.44 x 10^7 what is its wavelength