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In the August 1992 space shuttle fight, only 250 m of the conducting tether could be let out. A 40.0 V motional emf was generated in the Earth's 5.0×10-5 T field, while moving at 7.8×103 m/s. What was the angle between the shuttle's velocity and the Earth's field, assuming the conductor was perpendicular to the field?
What is the little distance between the speakers for which the interference of the sound waves is destructive.
A positively charged rod is brought close to one end of an uncharged metal rod but does not actually touch it. What type of charge does the end of the metal rod closest to the positively charged rod acquire?
A commuter train passes a passenger platform at a constant speed of 35.5 m/s, What wavelength is detected by a person on the platform as the train approaches
A thin 320g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705J of kinetic energy. What is the speed (in m/s) of a point on rim.
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
Two concentric hollow metal spheres have radii r1=1.50E-2 m and and r2=6.80E-2 m. At a point 9.80E-2 m from the center of the spheres, the electric field is directed outward and has a magnitude 2.08E+2 N/C. At a distance 5.80E-2 m from the center,..
Consider an equilateral triangle 12cm on a side. If a charge of 6*10^-5 C is placed at each vertex, find the force on the top charge.
Find the position of an object in front of a screen to obtain an image of size twice larger than its original size on the screen.
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
What is the current in amperes in a wire of radius. The parallel plates in a capacitor, with a plate area of 8.70 cm2 and an air-filled separation of 3.30 mm, are charged by a 8.90 V battery.
A 70kg man walks out on a 10kg beam that rests on, but is not attached to, two supports. When beam just starts to tip, what is the force exerted on the beam by the right support.
A 2 kg rock is released from rest at a height of 29 m. neglect air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights: 20m; 15m; 5m; 9m.
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