Suppose there is a large amount of (weakly interacting) dark matter between us and a distant galaxy. How will this affect our view of the distant galaxy?

How much tension must a rope withstand if it is used to accelerate a 960kg cat horizontally along a frictionless surface at 1.20m/s^2?

A pitcher exerts a force on a baseball that is 30 times the balls weight. How fast is the pitcher accelerating the ball?

A ray of light passes from air into water with an angle of incidence of 30 o. Which of the following quantities does not change as the light enters the water ... a) Wavelength b) frequency c) speed of propagation d) direction of propagation.

Suppose a metal sphere is launched up a ramp with Vi=1.5 m/s. The end of the ramp is 1.20 m above the floor. The ramp is at an angle of 20° to the horizontal. Calculate the range of the sphere.

The collision between two objects is an example of a___force.

Jessica took a Mylar balloon outside on a very hot day. As she waited for the bus the balloon began to get bigger. What is the best explanation of this?

Describe how electricity flows through a simple closed circuit.

Solar energy is produced by A. fusion of light nuclei to make heavier ones B. the slow release of heat left over from the Sun's formation C. fission of heavy nuclei into lighter ones D. solar magnetism

A 72-kg fisherman in a 114-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 5.0 m/s.

Roberto creates an animation titled "Flying through an Atom." The animation makes it seem as if the viewer passes all the way through an atom, starting from one side, then through the atom's center, and then leaving through the other side.