When a simple machine multiplies force, it decreases

a. potential energy.

b. distance moved.

c. both

d. neither?

If for every action, there is an equal and opposite reaction, then how can forced be imbalanced? For example, somebody skydiving?

When people talk about new sources of energy, do they mean discovering new sources of energy or new ways to capture and convert energy?

Which of the following optical media (BD-R, Blu-Ray, DVD-RW, and DVD DS [Double-Sided]) : a) is capable of multiple rewrites and b) has the largest capacity?

What effect does increasing the current have on a solenoid?

Which scientist stated that all cells arise from preexisting cells?

A potter's wheel of radius 16 cm starts from rest and rotates with constant angular acceleration until at the end of 32 s it is moving with angular velocity of 10 rad/s. what is the angular acceleration? answer in units of rad/s 2.

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0∘ above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level ground.

Design an experiment (Fair Test) to find out what would be a good insulator for a dog house.

Which of these changes does a submarine encounter as it returns from the bottom of the ocean to the surface of the ocean? a. the amount of sunlight increases. b. the water temperature decreases. c. the amount of plants decreases. d.

Why do some elements have symbols that don't use letters in the element's name?