Two plane mirrors are inclined at 70 deg. a ray incident on on one mirror at angle theta, after reflection falls on second mirror and is reflected from there parallel to the first mirror. What is theta

A student adds two numbers together. How can the student determine the number of significant figures in the answer? A student measures her height with a meter stick and finds that she is about 1.5 m tall.

An astronaut leaves the International Space Station (ISS) on a tethered line. Although ISS and Earth exert gravitational force on the astronaut, why does she appear to be weightless? A) Earth only exerts gravitational force on objects at its surface.

The diagram shows particles that make up an atom. Which label best completes the diagram?

When you lift a box off the ground gravity opposes your lifting force.

What can be used to determine if 2 rock layers were deposited at the same time? (a) index fossils (b) body fossils (c) imprint fossils (d) trace fossils

Explain what happens to light when it is refracted at the surface of water.

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.

Consider the following distribution of objects: a 3.00-kg object with its center of gravity at (0, 0) m, a 4.20-kg object at (0, 6.00) m, and a 1.40-kg object at (1.00, 0) m. Where should a fourth object of mass 7.

A Volt/Amp Is Also Known As.?

What's the difference between mass & weight & how they are measured