There are four springs stretched by the same mass. spring a stretches 25 cm. spring b stretches
10 cm. spring c stretches 100 cm. spring d stretches 1 cm.
which spring is the weakest?
a
b
c
d

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?