Through which one of the following mediums is the velocity of a sound wave the greatest?

a. Steel

b. Lead

c. Water

d. Air

If a rock is dropped off a cliff with the initial speed of 0 m/s what is rocks speed after three seconds if there is no air resistance

Which lab equipment is used as a cover to prevent heated materials from splattering out of the container and as a holding plate for hot or flammable materials?

Light is traveling in air at a speed of 300,000 km/s. Which substance would cause the light to refract the LEAST? A. ruby (speed of light = 170,000 km/s) B. glass (speed of light = 200,000 km/s) C. water (speed of light = 225,000 km/s) D.

If it takes 100 N to move a box 5 meters, what is the work done on the box? A. 500 J B. 20 J C. 5 J D. 5,000 J

A woman (m = 45kg) is kneeling on the shoulders of a man (m = 70kg) in pair figure-skating while both are traveling at 1.5 m/s. The man gracefully accelerates the woman forward into the air.

Which of the following is the correct SI unit to use in measuring the mass of a boulder A. ounces B. tons C. kilograms D. pounds (I'm sorry If I didn't pick the right subject!)

Which of the following can be thought of as either a wave or a particle? a. light b. an electron c. a proton d. all of the above

Universal law in effect at all times?

Elements in an blank or blank of the periodic table have similar characteristics

A pendulum is raised 1.5 cm and allowed to fall. if air resistance is negligible, how high will the pendulum rise on the other side?