Ultraviolet waves can;

A - enable your body to produce vitamin D

B - cause cancers

C - cause skin damage

D - all of the above

Which observation led scientists to describe matter as behaving like a wave A. counts of the number of atoms in a sample B. Electrons flowing from a metal using certain types of light C. Electrons forming interference patterns D.

A car travels forward with constant velocity. It goes over a small stone, which gets stuck in the groove of a tire.

If a force of 40N is applied for 0.2 sec to change the momentum of a volleyball, what is the impulse? 200 N*s 0.005 N*s 8 N*s

Your brother's mass is 40.0 kg, and he has a 1.30 kg skateboard. what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s?

What is the constant speed formula?

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)

What is the weight of a 15kg dog on earth?

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.