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An airplane propeller is 2.08 m in length (from tip to tip) and hasa mass of 117kg. The propeller is rotating at 2400 rev/minabout an axis through its' center.
a.) What is its rotational kinetic energy? Treat thepropeller as a slender rod
b.) If it were not rotating, how far would it have to drop infree fall to acquire the same kinetic energy?
Two identical small charged spheres hang in equilibrium with equal masses as shown in the figure. The length of the strings are equal and the angles with the vertical are identical. The acceleration of gravity is 9.8 m/s2 and the value of Coulomb’..
near the surface of the earth there is an electric field of about 150 vm which points downward. two identical balls
Since it is a known fact that light transmits energy and that bright lights transmits more energy than dim light, do interference effects violate conservation of energy and why?
After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, What is the minimum thickness of the film of eyedrops on your cornea
A transformer has 20 turns of wire in its primary coil and 40 turns on its secondary coil. What is the power delivered to this transformer
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. The area of each plate is 3.3 m2 and the separation between the plates is 8.00 10-5 m. What is the dielectric constant of the dielectric?
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 52.0 cm . The explorer finds that the pendulum completes 108 full swing cycles in a time of 145s .What is the magnitude of the gravitational acceleration o..
One end of a rope is tied to a block of mass 3.10kg and you pull straight up on the other end of the rope to lift the block up off the ground with an acceleration of 3.80m/s^2
A bullet is fired horizontally with an initial velocity of 900 m/s at a target located 150 m from the rifle. How much time is required for the bullet to reach the target
the acceleration record shown was obtained during the speed trials of a sports car. knowing that the car startys from
A 67-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. The initial speed of the skier is 6.5 m/s. After coasting 1.9 m up the slope, What is the magnitude of the kinetic frictional force
In a certain region, the earth's magnetic field has a magnitude of 5.4 × 10-5 T and is directed north at an angle of 49° below the horizontal. Determine the bullet's electric charge
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