If a car increases its speed from 20 mph to 60 mph, by what factor does the kinetic energy of the car increase

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?