Galileo was the first scientist to do which of the following? A. estimate the speed of light B. propose the heliocentric theory C. discover radioactivity D. define and measure speed E. invent the reflecting telescope

When two sound waves are added together, interference occurs. What type of interference occurs when the overall volume increases? A. Destructive interference B. Deductive interference C. Inductive interference D. Constructive interference

A volleyball hits the floor. What is the "reaction" force from Newton's third law?

What is the smallest part of a compound that has the properties of that compound

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

A loud factory machine produces sound having a displacement amplitude in air of 1.00 μmμm, but the frequency of this sound can be adjusted.

1. The sun and other stars produce visible light by a. fluorescence. b. luminescence. c. incandescence. d. electroluminescence.

What are gravitons?

Which of the following would be considered basic science questions? A. How can cars be made safer? B. What is the best way to improve a gas engine? C. Why do many birds have colorful feathers? D. What are the stages in the life cycle of a star?

Which description does the phrase "mechanical advantage" most closely relate to?

The breaker of a certain circuit installed in a house shuts down at 10 amps. Can we connect a water heat of 2 kW to a power outlet of 240 V in this circuit?