Which part of a telescope focuses the incoming light? I thought it was the mirror but people are telling me I am wrong?

If a ball with an original velocity of zero is dropped from a tall structure and it takes 7 seconds to hit the ground, what velocity does the ball have when it reaches the ground? A. 34.3 m/s B. 68.6 m/s C. 156.8 m/s D. 240.1 m/s

Which characteristics are generally given to the atoms that make up a liquid?

If you push on a closed door, the door pushes back against you with

Match each projection to its description. A. Cylindrical projection B. Planar projection 1. Often, the center of the map is either the North or South Pole. 2. The map is distorted near the poles.

The resulting net force of an object is represented below. →10 N Which most likely represent the forces acting on the object?

A 1200 kg car is moving at 5.0 m/s east. it strikes an 1800 kg car at rest. the cars have an elastic collision and move in the east or west direction. the velocity of the 1200 kg car after the collision is:

Describe the movement of particles when water vapor touching cold surface

In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 37 h.

Metamorphic rocks may generally be distinguished from igneous rocks because

What is matter? A. matter is an element B. matter is anything that is made of atoms and that has mass C. matter is a compound D. matter is anything that is made of organic substances and is found on the earth