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A rider sits on a bicycle exercise machine and pushes downon the pedal with a force of 200 newtons through a verticaldistance of 0.45 meters. If the wheel started from rest, how much rotational kinetic energy will the wheel have if it has a mass of3.0 kg and a radius of 0.6 meters?
During takeoff, an airplane climbs with a speed of 160 m/s at an angle of 24 degrees above the horizontal. How fast is the shadow of the plane moving along the ground
A village maintains a large tank with an open top, containing water for emergencies. The stopper is removed. What mass of water flows from the nozzle in 2.00 h
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
A student weighing 800 N crouches on a scale and suddenly springs vertically upward.His roommate notices that the scale reads 900 N, With what acceleration does he leaves the scale
Ilustrate what is the magnitude of the torque about his shoulder if he holds his arm in each of the following ways? Straight out to his side, parallel to the floor.
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A constant retarding torque of 15 m·N stops a rolling wheel of diameter 0.50 m in a distance of 21 m. How much work is done by the torque
Imagine a truck with a mass of 30 metric tons (t) (1 t=1,000 kg) barrelling down a highway at a speed of 50 mi/h. What is the truck's momentum in kilograms
A box with a volume V = 0.03 m3 lies at the bottom of a lake whose water has a density of 103 kg/m3, How much force is required to lift the box, if the mass of the box is 1510 kg
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
a 12.0 v battery is in series with a switch a 0.30 h inductor and a 19 omega resistor.a. whats the time constant tau? i
you illuminate a slit of width 0.0575 mm with light of wavelength 715 nm and observe the resulting diffraction pattern
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