How are forces able to act at a distance?

The seven colors of the rainbow are found in which part (s) of the electromagnetic spectrum? a) visible light b) visible light and television waves c) television waves d) telemetry waves

What is tension? a. stress squeezing an object c. stress breaking an object b. stress pulling an object d. stress releasing an object

Suppose the relative distances for a number of galaxies using brightnesses don't agree with the relative distances using apparent sizes. What would you conclude?

Electric charges that are different A.) attract each other B.) repel each other C.) exist in pairs D.) do not interact

Which two objects have stored energy? 1. a ball rolling on the ground 2. a small rock sitting on top of a big rock 3. a stretched rubber band 4. a stone lying on the ground

How has increased energy use associated with scientific advancements affected society? a. It has led to an increase of the concentration of atmospheric carbon dioxide. b. It has led to an increase in hazardous wastes from mining operations. c.

Water is moving with a speed of 5.7 m/s through a pipe with a cross-sectional area of 4.8 cm2. The water gradually descends 9.2 m as the pipe increases to 8.8 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.

Is Kepler's constant the same for moons orbiting a planet as it is for planets orbiting the sun? Why?

In which one of the following situations is zero net work done? A) A ball rolls down an inclined plane. B) A physics student stretches a spring. C) A projectile falls toward the surface of Earth.

Object dropped from height of 25 meters, what velocity will it hit the ground?