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An electron has a momentum py = 1.20 × 10-25 kg.m/s. What is the minimum uncertainty in its position that will keep the relative uncertainty in its momentum (Δpy/p) below 2.2%?
A 1.60 kg ball and a 7.20 kg ball are connected by an 80.0 cm long massless, rigid rod. The structure rotates about its center of mass at 320.0 rpm. What is the rotational kinetic energy of the structure?
A parallel plate capacitor has a plate area of 0.815 m2 and a plate separation of 2.05 millimeter. Explain what is its capacitance
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 302 K and the refrigerator is kept at a temperature of 276 K. find the coefficient of performance of this refrigerator
q1. on a very muddy football field a 110kg linebacker tackles an 85kg halfback. immediately before the collision
Electromagnetic waves areonly produced by accelerating charges, not by charges moving at aconstant speed without acceleration. What logical inconsistencywould be created if electromagnetic waves were produced by charges that move with zero accelerati..
The focal length of a simple magnifier is 7.00 cm. Suppose the magnifier to be a thin lens placed very close to the eye. How far in front of the magnifier must an object be placed if the image is formed at the observer's near point, 25.0 cm in front ..
A 3.6 meter long steel wire has a cross-section area of 0.047 cm2. Its proportional limit has a value of 0.0015 times its Young's modulus. Find how much will the wire stretch under this load
If the radius of the earth is located 44 degrees North Latitude, what distance does the earth move in one hour
A flat circular coil with 178 turns, a radius of 2.24 x10-2 m, and a resistance of 0.539 Ω is exposed toan external magnetic field that is directed perpendicular to th eplane of the coil.
A soccer player kicks the ball toward a goal that is 29.0m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A home run is hit in such a way that the baseball just clearsa wall 21 m high, located 130 m from home plate. The ball is hit atan angle of 35° to the horizontal, and air resistance is negligible.
In the drawing, the weight of the block on the table is 422 N and that of the hanging block is 185 N. calculate the acceleration of the two blocks
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