If a rock has a density of 2g/cm³ and a volume of 8cm³, what is its mass?

A. 4 g

B. 128 g

C. 16 g

D. 0.25 g

The frequency of a sound wave is determined by the?

Correct your friend that says, "The dragster rounded the curve at a constant velocity of 100 km/h." In other words, what is wrong with this statement.?

Which of the following represents an example of aerobic cellular respiration? 1. nitrogen + oxygen + glucose → methane + carbon 2. dioxide water + carbon dioxide + energy → glucose + oxygen + water 3.

5. Coal, petroleum, natural gas, propane, and uranium are examples of energy sources. A. nonrenewable B. renewable C. biomass D. Geocentric

Nearsightedness can be corrected by using eyeglass lenses that are A. concave in shape and cause light rays entering the eyes to converge. B. convex in shape and cause light rays entering the eyes to converge. C.

Light incident on a surface at an angle of 45 degrees undergoes diffused reflection. At what angle will it reflect?

A ship on the surface of the ocean receives a sonar echo back from an underwater object. The echo path from the object to the ship is at an angle of 35 degrees above the horizontal and takes 3s to return. (Velocity of sound in sea water = 1500m/s).

A wave has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave? a. 2.0 Hz b. 0.5 Hz c. 18 Hz d. 72 Hz

What is the acceleration of a body revolving in a circle at uniform speed? A. The acceleration is zero. B. The acceleration is directed tangentially. C. The acceleration is directed toward the center. D.

What volume is occupied by 2.35 moles of he at 25 degree c and a pressure of 0.980 atm?