Explain why adding oil to the moving parts of a machine can increase its efficiency

A ship begins a journey at 4 m/s. It accelerates at the rate of 1.6 m/s2. What is its final velocity after 7 seconds?

Under normal circumstances, the vitreous humor, a jelly-like substance in the main part of the eye, exerts pressure of up to 24 mm of mercury that maintains the shape of the eye.

Alexander has a mass of 70 kilograms. his apartment is on the second floor. 5 meters yo from ground level. How much work does he do against gravity each time he climbs the stairs to his apartment.

5. What is required to cause acceleration?

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

In order for a current to be maintained through a conductor a difference in must be maintained from one end of the conductor to the other end. potential power resistance conductivity

A rocket initially at rest acceleration at a rate of 99.0meter/second^2. Calculate the distance covered by the rocket if it attains a final velocity of 445 meters/seconds after 4.50 seconds.

Tired of being chased by a jaguar, you set a trap. Hoping to drop it on the jaguar, you try to push a 44.0 kg stone boulder off of the edge of a cliff that slopes down at an angle of 15.0°.

Why do stars appear to move through the night sky at the rate of 15 degrees per hour?

What is a Ramjet engine?