3. Which of the following units is NOT a scalar quantity?

A. Temperature

B. Acceleration

C. Speed

D. Mass

Sound waves can travel through which mediums? A) only liquids and gases B) only solids and liquids C) solids, liquids, and gases D) only solids and gases

According to Aristotle, a rock falls faster in water (more dense) than air (less dense). True False

Two identical positive charges exert a repulsive force of 6.1 * 10-9 n when separated by a distance 3.6 * 10-10 m. calculate the charge of each. the coulomb constant is 8.98755 * 109 n · m2 / c 2. answer in units of c.

When washing tableware in a three-compartment sink, the water should be at least

It is acceptable for all types of waste to be either burned or buried in the same manner. true or false?

Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes? Molecules group together Molecules slow down and contract Molecules speed up and expand Molecules move freely

A spring is used in a lab. It is vibrated at different frequencies and the wavelength is recorded. Using the graph of the data, what is the relationship found between frequency and wavelength? A) Frequency and wavelength are inversely related.

How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears?

What causes the stars to appear to move across the night sky?

Two waves collide and the temporary combined waves that results is smaller that the original wave. which term describes this interaction? A. destructive interference B. standing wave formation C. diffraction D. constructive interference