In the picture above the sphere is solid and has a mass of 4kg and a radius of 0.01m. The ramp has a length of 6m and is angled 30 degree from the floor. The moment of inertia for a solid sphere is 2 over 5 m r squared. If the sphere starts from rest and there is enough friction to keep it from slipping, then what is the linear speed at the bottom of the incline?

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

In a system, when potential energy decreases, then entropy also decreases. true false

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?