Which statement is true?

a. Velocity and speed both have units of m/s.

b. Velocity is a scalar, while speed is a vector.

c. Velocity has a magnitude, but speed does not.

d. Speed always includes a direction as well as a magnitude.

Explain why a diverging lens is used to correct nearsightedness (difficulty seeing objects far away).

Which example (s) below involve zero physics work? check all that apply. check all that apply. a rope supports a swinging chandelier. a person pushes a car stuck in the snow but the car does not move. a person uses a lawn mower on a lawn.

True or false. Food companies are required by law to give you facts on food labels about what are about to eat.

A football is thrown toward a receiver with an initial speed of 16.9 m/sat an angle of 36.5◦ above the horizontal. At that instant, the receiver is 16.8 m from the quarterback. The acceleration of gravity is 9.81 m/s2.

an egg is dropped from the top of the library roof. then 2.2 seconds after that a second egg is thrown straight down with an initial speed of 58m/s. it is then observed that the two eggs splat on the ground at the same instant.

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color

The difference between two numbers is 15. When twice the smaller number is subtracted from three times the larger number, the difference is 58. What is the larger number?

Vector A makes equal angles with x, y and z axis. value of its components (in terms of magnitude of vector A will be?

What has become an important alternative to Piagetian approaches?

How would life on earth be different if earth's axis were not tilted with respect to its orbit? A. There would be no seasons. B. There would be no day and night. C. All places would have the same climate. D. The seasons would be much shorter.