A pendulum takes 0.5 second to complete one cycle. What is the pendulum's period and frequency?

The critical angle for a light ray travelling from a ruby into ethyl alcohol is 50.6 degrees celsius. Determine the index of refraction for ethyl alcohol.

A catcher picks up a baseball from the ground, if the unbalanced force on the ball is 7.25 x 10^-2 N and 4.35 x 10^-2 J of work is done to lift the ball, how far does the catcher lift the ball?

Which statement best describes frustration? A. When you achieve your goals despite certain events B. When you can't retrieve your gold because you are not trying hard C. When you can't achieve your goal due to events beyond your control D.

Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.76*104 n for 5.50*10-2 s.

Which factor influencing the distribution of life in the ocean (tides, currents, or waves) is the most influential? Why do you think so?

What will happen to an electromagnet of the electric current is lost?

How can velocity be used to calculate for an unknown distance? (Logically)

A rod made from insulating material carries a net charge, while a copper sphere is neutral. The rod and the sphere do not touch. Is it possible for the rod and the sphere to (a) attract one another and (b) repel one another? Explain.

Which of the following best explains why mutations cannot cause evolution?

We often use a spoon to cool coffee by stirring. Some of the heat is conducted from the coffee to the air by this method, but the spoon itself will cool the coffee a little.