The radii of curvature of a biconvex lens are 4 cm and 15 cm. the lens is in air, its index of refraction is 1.5. an object is at 1 m before the front surface of the lens. calculate the distance of the image from the back surface of the lens.

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

What determines the amount of inertia an object has