In the figures, the masses are hung from an elevator ceiling. assume the velocity of the elevator is constant. find the tensions in the ropes (in n) for each case. note that θ1 = 37.0°, θ2 = 53.0°, θ3 = 59.0°, m1 = 5.00 kg, and m2 = 9.00 kg. (due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in webassign.)

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

State the right hand rule of the direction of magnetic field in a conductor carrying current

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!