Which of the following is necessary for the greenhouse effect?

The oceans

The land

The seasons

The atmosphere

A carousel has a radius of 1.70 m and a moment of inertia of 110 kg · m2. A girl of mass 44.0 kg is standing at the edge of the carousel, which is rotating with an angular speed of 3.40 rad/s.

Two electrons exert a force of repulsion of 1.2 N on each other. How far apart are they? The elementary charge is 1.602 * 10-19 C and Coulomb's constant is 8.987 * 109 N · m2/C2. Answer in units of m.

Which of the following is not an essential component of a laser? a. a partially transparent mirror c. a converging lens b. a fully reflecting mirror d. an active medium

What are tree things that apply to relative dating

The proportion of carbon-14 in an organism is useful in figuring out the age of that organism after it dies because ... ? A. carbon-14 decays to carbon-13. B. the proportion of carbon-14 is stable forever. C.

Matt plays badminton. He serves the birdie with a velocity of 4.25 m/s [right] covering a displacement of 5.2 m [forward]. How much time does this birdie's trip take? show your work below

A Roller Derby Exhibition recently came to town. They packed the gym for two consecutive weekend nights at South's field house.

A train is 240 meters long and travels 20 m/s. How long does it take to cross a 360-meter long bridge? S

When polarizing an object, what happens to the charges in the object? A. They swirl about like bees in a hive. B. They separate, with positive charges on one side and negative charges on the other. C.

Hailey is preparing a debate on the benefits of using synthetic polymers over natural polymers, and she wants to create a list to get started. Which should she include in her list? Check all that apply. Synthetic polymers are biodegradable.