Andrea rides her bicycle at a speed of 10 m/s. She and the bike have a combined mass of 50 kg.
a.
If she uses her brakes to slow down to 5 m/s, how much energy is converted to
heat?

What are similarities and differences of reflection, refraction, diffraction and absorption?

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?