What are safety goggles used for

Terry, a 70-kilogram tailback, runs through his offensive line at a speed of 7.0 m/sec. Jared, a 100-kilogram linebacker, running in the opposite direction at 6.0m/s, meets Jared head-on and "wraps him up." What is the result of this tackle?

An open-topped freight car with mass 24,000 kg is coasting without friction along a level track. It is raining very hard, and the rain is falling vertically downward. Originally, the car is empty and moving with a speed of 4.00 m/s.

Which are characteristics of electromagnetic waves? check all that apply. travel in straight lines and can bounce off surfaces travel through space at the speed of light travel only through matter travel only through space can bend around objects

What is an artificial situation in which a scientist deliberately makes certain changes in the world about him so that he can observe the consequences?

The atomic mass of an element A. The sum of the protons and electrons in one atom of the element B. Twice the number of protons in one atom of the element C. A ratio based on the mass of carbon-12 atom D.

Nicotine a. is a central nervous system depressant. b. stimulates the heart and increases respiration. c. increases hunger signals. d. is not easy to develop a tolerance to.

When a charged cloud passes overhead, the goround below is charged by A deduction B electrification C polarization D induction

What happens during constructive interference? two waves moving through the same medium add their effects one wave prevents another from moving through the same medium two waves produce two more waves waves moving in opposite directions cancel each

The weight of an object is a. the force of gravity on its mass. b. the amount of matter in an object. c. the tendency of an object to resist motion. d. the tendency of an object to continue moving in a straight line.

The target substance of a drug is called a A. contraindicator. c. receptor. B. stimulator. d. transporter.