Two identical bowling balls are rolling on a horizontal floor without slipping. the initial speed of both balls is v = 10 m/s. ball a encounters a frictionless ramp, reaching a maximum vertical height ha above the floor. ball b on the other hand rolls up a regular ramp (i. e. without slipping), reaching a maximum vertical height hb above the floor. which ball goes higher and by how much? show the steps of your calculations.

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.