Measurement is the use of numbers according to a standard.

a. True

b. False

What is true of a mechanical wave? @3.2. P. B5 @1 A) It must travel in a vacuum B) It must have a medium. C) It must travel in empty space. D) Both sound and light are examples

Isla made a diagram to compare X-rays and radio waves. What should Isla write in the areas marked A, B, and C?

Identify three possible components of a dna nucleotide.

Jim pushes hard on a rock that weighs 500 pounds. He pushes with a force of 50 pounds, but the rock doesn't move. How much work did Jim do?

I am an animal named after the animal that I eat, what am I?

Give two factors that will increase the magnetic field strength of an electromagnet

What is an example of total internal reflection at work?

Explaining how momentum can cause motion an astronaut on a space walk floats a little too far away from the space station. without air to push against, he cannot paddle back. however, the astronaut is holding a hammer.

A one-piece cylinder has a core section protruding from the larger drum and is free to rotate around its central axis. A rope wrapped around the drum of radius 1.39 m exerts a force of 3.34 N to the right on the cylinder.

In which of the following situations or places would you want to reduce the force of friction? More than one answer A. Skiing down a hill during a race. B. Walking down a steep hill. C. Sitting in the bed of a pickup truck while it turns a corner. D.