Which one of the following distances is the shortest?

a. 0.1 m

b. 1 cm

c. 0.001 km

d. 100 mm?

The mass at time t of a radioactive substance is m (t) = m (0) ekt, where m (0) is the initial mass and k=-0.000135. The mean life M of an atom in this substance is M=-k∫∞0tektdt=

A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 x 106 meters, find the mass of the moon. a) 7.36 x 10^ (28) kg b) 2.4 x 10^ (10) kg c) 7.36 x 10^ (22) kg d) 1.43 x 10^ (4) kg

Vinegar (acetic acid) in a solution will react with chalk (calcium carbonate) a solid. the rate of the reaction can be determined by how quickly carbon dioxide, one of the products, is produced.

If the force is 4 newtons between two charged spheres separated by 3 centimeters, calculate the force between the same spheres separated by 6 centimeters. 2 N 0.3 N 6 N 1 N

A car accelerates uniformly from rest and reaches a speed of 18 m/s in 13.8 s. the diameter of a tire is 60.8 cm. find the number of revolutions the tire makes during this motion, assuming no slipping.

In which case is there an induced electromotive force? A. A permanent bar magnet is held inside a coil of wire B. Field line's from earths magnetic field cross the area of a coil of wire C.

Is light a wave like or a particle like or both and why is it so

If the height of a playground slide is kept constant, will the length of the slide or whether it has bumps make any difference in the final speed of children playing on it a. True. b. False.

A doppler effect occurs when a source of sound moves. True or False

What is a temporary magnet