Consider a continuous helix with a radius r and pitch P. Show that the length traveled along one turn of the helix (contour length) is √(P^2+4π^2 r^2 ). Hint: Project the helix on to a cylinder and then unwrap the cylinder

What is the state of matter with a specific volume but no definite shape

The molecular mass of a gas is (select all that apply) a. independent of the type of gas b. the same number as the atomic (or molecular) mass, but measured in grams c. dependent on the temperature d. the mass of a mole of the gas

A10 kg shark swimming at 5m/s swallows an absent-minded 0.5 kg fish that is originally at rest. what is the speed of the large fish after eating the smaller fish?