What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova

An increase in wind. Causes this current to increase

Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other.

Why can beta particles pass through materials more easily than alpha particles? A.) Beta particles are made of pure energy. B.) Beta particles are smaller. C.) Beta particles are not charged. D.) Beta particles move more slowly.

What unit is frequency measured in? Question 3 options: Hertz (Hz) Grams (g) Watts (w) Newtons (N)

A mountain climber of mass 60.0 kg slips and falls a distance of 4.00 m, at which time he reaches the end of his elastic safety rope. The rope then stretches an additional 2.00 m before the climber comes to rest.

Compare and contrast the average kinetic energy of 0.5 L of coffee at 34°C, 0.5 L of coffee at 38°C, and 0.25 L of tea at 43°C.

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5

Where in the motion is the magnitude of the net force on the object a maximum? where in the motion is the speed a maximum?