When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room. which sentence explains this? a) gases do not have a definite volume. b)the particles of gases are closely packed. c)the force of attraction between particles in gases is very high. d)gases are not matter.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?