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A Ferris wheel rotates at an angular velocity of 0.28 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.027 rad/s2. Find how long does it take the wheel to come up to operating speed?
On days of fair weather, the atmospheric electric field of the Earth is about 116 N/C; What is the surface charge density on the ground
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
a potential difference of 100 v produces a current of 3 a in a certain resistor.a what is the resistance of the
A 8.80-kg block of ice, released from rest at the top of a 1.33m--long frictionless ramp, slides downhill, reaching a speed of 2.61m/s at the bottom. What would be the speed of the ice at the bottom
An insulated vertical piston cylinder device initialy contains 10kg of water, 6 kg of which is in the vapor phase. The mass of the piston is such that it maintains a constant pressure of 200 kPa inside the cylinder.
A 2.40-kg object has a velocity (5.60 - 1.20 ) m/s. (Note: From the definition of the dot product, v2 = · .) What is its kinetic energy at this moment
John, a 76-year-old grandfather, had been smoking heavily for 26 years and had a persistent cough. A biopsy of his lung tissue revealed considerable amounts of carbon particles. How might this happen considering the natural cleaning mechanism of the ..
A 1053-kg car starts from rest at the bottom of a drive way and has a speed of 3.00 m/s at a point where the drive way has risen a vertical height of 0.600 m. How much work does the engine do
A light rod l.00 meter in length about an axis perpendicular to its length and passing through its center. Neglecting the mass of the rod, find the system kinetic energy when its angular speed is 2.50 rad/s
Calculate the pressure of the blood in the brain and in the feet of a pearson when standing. The average pressure of the blood in the heart is 1.3×104N/m2 above atmospheric pressure
a soccer player kicks the ball toward a goal that is 25.0 m in front of him. the ball leaves his foot at a speed of
if the magnitude of the total acceleration of the car's mass center is the same at B as at A, compute the radius of curvature of the dip in the road at B
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