What is a pulleys purpose

A 12.65 g sample of a radioactive substance is allowed to decay for 17.22 min. At that time, the sample weighed 3.115 g. What is the half-life for this substance?

1. An electromagnetic wave in a vacuum has a wavelength of 0.07 m. What is its frequency? f = 3.0 • 108 m/s f = 4.3 • 109 Hz f = 3.0 • 109 Hz f = 4.3 • 108 m/s 2.

A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if either, is greater

An object moving in a curved path and affected only by gravity is called

Know what can be classified as scientific and not scientific?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.