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A flat screen is located 0.70 m away from a single slit. Light with a wavelength of 557 nm (in vacuum) shines during the slit and produces a diffraction pattern. The width of the central bright fringe on the screen is 0.043 m. What is the width of the slit?
A ball swings in a vertical circle at the end of a rope 1.50 mlong attached to the ceiling. When the rope is 36.9 degrees pastthe lowest point and is on its way up, its total acceleration isgiven by (-22.5 i + 20.2 j) m/s2. At thatinstant determine t..
A standard bowling ball weighs 17 pounds. You wish to hold a bowling ball infront of you, with the elbow bent at a right angle. Suppose that your biceps attaches to your forearm at 2.5 cm out from the elbow joint, and that your biceps muscle pulls ve..
a jogger runs 100 m due west then changes direction for the second leg of the run. at the end of the run she is 175 m
Calculate the peak voltage of a generator that rotates its 210 turn, 0.100 m diameter coil at 3600 rpm in a 0.830 T field
A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. How much work is done on the astronaut by the force from the helicopter
a uniformly charged disk radius r and surface charge density 1.70 microcm2 lies in the xy plane with its center at the
A piece of machinery with a momentum of inertia of 2.6 kg m2 rotates with a constant angular speed of 4.0radians/second when a frictional torque of 0.56 mN acts on it. What is the net torque acting on the piece
A small sphere that carries a charge of 6.35 ?C is whirled in a circle at the end of an insulating string. What average current does this rotating charge represent
The index of refraction of crown glass forviolet light is 1.529, while for red light it is 1.509. What is the speed of red light in crownglass
The Hall voltage across a conductor in a 55 magnetic field is 1.9 . When used with the same current in a different magnetic field, the voltage across the conductor is 3.
One end of a spring is attached to a wall. A 28N pull on the other end causes the spring to stretch by 2.8cm, What is the spring constant
A 200 g cord is stretched over a distance of 5.2 mand placed under a tension of 500 N. Compute the speed of a transverse wave in the cord
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