True or false: Heterogeneous materials contain visibly different materials

The number of significant figures in the measurement 0.000 305 kg is six. two. seven. three.

Some canoes have compartments on either end that are hollow and watertight. These canoes won't sink, even when they capsize. Explain why

It takes 63 W to power a ceiling fan. The energy output of the fan is 50 W. Calculate the efficiency of the fan. Round your answer to the nearest percentage. %

Whats quantum physics?

In the heat equation, what does c represent

A physics student is riding on a train traveling north. Having read about inertia, the student performs an experiment with a golf ball. He reaches over the aisle and drops the ball from rest.

What do orbiting satellites and the orbit of the moon around the Earth have in common? A. Parallel-force motion B. Central-force motion C. Velocity D. Friction

Which air mass provides the moisture that produces the clouds and precipitation?

What is a relatively small rocky body that travels through out space

Which is true about the pressure of a fluid at a specific depth? It varies with the total volume of the fluid. It depends only on the type of fluid. It is exerted only in the downward direction. It depends on the surface area of the fluid.