A 70kg person with very little hair is riding a go kart, 90kg, at K1 at 11 m/s and drives directly into a rail. How far will the bumper spring compress under the collision as everything comes to a stop? The spring bumper has a spring coefficient of 500,000N/m.

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

What happens when the vapor pressure of a liquid is equal to the external pressure?