Which increases the work output of a machine?

A. increasing friction

B. reducing friction

C. reducing input distance

D. increasing output distance

A hypothesis is an assumption or a best guess that

Shortly after the ball of energy began to expand to form the universe, light elements were formed by which of the following processes? A. Chemical changes B. Redshift C. Cosmic background radiation D. Nucleosynthesis

What is a hernia? (A) cold sores (B) an inflammation (C) a protrusion (D) a congenital abnormality

A person who has dissociative identity disorder: O A. cannot remember who he or she is. O B. has panic attacks when confronted. C. has two or more distinct personalities OD hears voices

How can one object affect the motion of another without touching it? Give a specific example.

What has occured when bubbles form in a liquid that is being heated

What would happen to the supply of ATP in your cells if you did not eat enough carbohydrates?

According to a rule-of-thumb, every 5 seconds, between a lightning flash and the following thunder gives the distance to the flash in miles.

What should a free-body diagram look like for a skydiver that is still speeding up as he falls? There is an arrow up for air resistance and an arrow down for gravity. The arrows are the same length.

As a rocket moves farther and farther upward from the launch pad, what happens to the strength of Earth's gravitational field around the rocket? a. It gets weaker. b. It grows stronger. c. It remains constant.