A 20-N force applied to the handle of a door produces a 44-N output force. What is the AMA of the handle?

An isotope decreased to one fourth its original amount in 18 months. What is the half life of this radioactive isotope?

A box experiences a force of 10N to the left and a force of 10N to the right. What is the net force on the box?

Describe the general relationship between the length of the string and the time to complete one swing of the pendulum?

What determines the current phase of the moon? * A. The seasons B. How much of the sunlit part of the moon is visible C. The 23.5 degree tilt of the Earth D. The side of the moon facing Earth

Which state of matter contains particles that move slightly in a fixed posistion

If a fully loaded shopping cart has a head-on collision with an empty cart both moving at the same speed toward each other, which cart experiences the greater force? The greater impulse? The greater change in momentum? The greater acceleration?

Why didn't early Portuguese and Dutch explorers decide to create settlements in Australia

How do the electrons in the bulb's filament, far from the battery and its emf, "know" that they should flow?

What occurs when an unstable atomic nucleus changes into other nuclei by emitting particles and energy

Can a simple machine's efficiency ever be greater than 100%? Explain your answer.