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A child sit down in a seat on a Ferris wheel. Suppose the wheel has a radius of 70m, and that when the ride begins, it takes 20s for the wheel to accelerate up to its operating speed of 1.5 revolutions/minute. By this time, what angle has the child rotated through?
If the density of conduction electrons is 10^27 m^3 and the wire has a radius of one millimeter, what is the electrical current through this wire
If you are in a car accident with an initial speed of 119 km/h and you are stopped by an airbag that inflates from the dashboard, over what distance should the airbag stop you for you to survive the crash.
A paperweight, when weighed in air, has a weight of W = 11.4 N. When completely immersed in water, however, it has a weight of Win water = 8.09 N
Having grown tired of hearing loud music from passing cars at 3 am and the boisterous yelling of bar patrons at closing, If her new home is 2.8 km from the freeway, what's the intensity level there
A filing cabinet weighing 556 N rests on the floor. The coefficient of static friction between it and the floor is 0.68, In which of the attempts does the cabinet move
the magnetic field perpendicular to a circular coil of 5 turns and diameter 20cm changes from +1.85 T to -.25 T in 30 ms. Find the change in magnetic flux and induced emf
A 277.4-N force is applied parallel to a 23.8-degree incline to pull a 29.5-kg crate from rest up the incline to a final height of 5.8 meters. Determine the speed of the crate at the top of the incline
A resistor with 325? and an inductor are connected in series across an ac source that has voltage amplitude 520V . The rate at which electrical energy is dissipated in the resistor is 234W. What is the amplitude of the voltage across the inductor
A bead of mass m slides without friction down a track and around a loop-the-loop of radius R. The initial height of the track is h = 3.5R. What is the speed of the mass after going around the loop
Two objects attract each other gravitationally with a force of 2.5 * 10^-10N when they are .25m apart. There total mass is 5.00kg. Find their individual masses
A transistor radio operates by means of a 12 V battery that supplies it with 56 mA current. what is the cost per kWh to operate the radio in this manner
When rebuilding her car's engine, a physics major must exert 250 N of force to insert a dry steel piston into a steel cylinder at a constant velocity. What is the normal force between the piston and cylinder
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