The sticky substances in cigarettes that coat the lining of the lungs are

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?

What is the rapid growth rate of a population after a period of slow growth called? a. exponential growth b. overconsumption c. a point source d. the carrying capacity