Edwin Hubble categorized galaxies according to their

A. shapes.

B. colors.

C. food supplies.

D. inhabitants.

When a falling object reaches terminal velocity, the net force acting on it is

If Sienna is using the gymnasium floor to cool off, which position will lower her skin temperature the quickest?

Which part of the ear picks up vibrations from the atmosphere? eardrum bones of the middle ear hair cells nerve from the inner ear

Would the density of a person be the same on the surface of the earth and on the surface of the moon?

A plane comes out of a power dive, turning upward in a curve whose center of curvature is 1300 m above the plane. The plane's speed is 260 m/s. a. Calculate the upward force of the seat cushion on the 100 kg pilot of the plane. b.

A glass window is a clear object that light passes through as it travels in a straight line. This is a good example of A. refraction of light. B. transmission of light. C. absorption of light. D. reflection of light.

Why is net force a vector sum A. All forces have direction and magnitude B. Forces can only be attractive C. All forces are contact forces D. There are four fundamental forces

Does the elf owl's small size allow it to live in cacti

If grapefruit juice has a ph of 3.0 and egg white have a ph of 8.0, which contains more h + ions? how many more?

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.