Which part of an atom has a mass approximately equal to 1/2000 of the mass of a common hydrogen atom?

A. nucleus

B. electron

C. proton

D. electron cloud

A supernova is the explosion of a dying? a. medium-mass star. b. high-mass star. c. protostar. d. low-mass star.

Which of the following describes an electric motor? Check all that apply. A. Is found in many appliances with moving parts, like a vacuum cleaner or a blender B. Uses the interaction between a spinning coil of wire and a magnet C.

If a 1000-pound capsule weighs only 165 pounds on the moon, how much work is done in propelling this capsule out of the moon's gravitational field? (Note: The radius of the moon is roughly 1080 miles)

Why is a football firm when it is inflated to its proper pressure

When you see a yellow car in a parking lot, why do you see it as yellow? A. The yellow paint reflects all colors except yellow light. B. The yellow paint absorbs mostly yellow light. C. The yellow paint reflects mostly yellow light.

What objects are found in the sloar system solar system

For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

How do electric and magnetic fields interact to create electromagnets?

Select the correct answer from each drop-down Two magnets are placed as shown in the 00 В D between the poles B and . And the force of between the poles A and DIS Reset Next

Two main pieces of evidence support the big bang theory and the idea that our universe is continually expanding: Doppler shift and cosmic background radiation. Explain how these phenomena provide evidence of the expansion of the universe.