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Light enters a substance glass using a converging lens with a refractive power of 20 diopters. Find the magnification if the image is to be viewed by a relaxed eye with a near point of 25 centimeter.
in the electron gun pictured a potential difference of 12.0 kv is found to bring electrons from rest at the cathode to
A wire that is carrying a current is placed in a uniform magnetic field pointing out of the page. What direction does the force on the wire point
A Particle of mass m moving by a speed Vi has a collision with a particle of mass 2m that is at rest before the collision. After the collision all particle is observed to be moving at an angle θ measured from the original direction of the incoming pa..
A small metal bead, labeled A, has a charge of 29nC . It is touched to metal bead B, initially neutral, so that the two beads share the 29nC charge, What is the charge qA and qB on the beads
create destructive interference between the speakers. Friction provides the force required for a car to travel around a flat, circular race track.
The upward normal force exerted by the floor is 610 N on an elevator passenger who weighs 660 N. What is the reaction force to weight of the passenger
Suppose a tank contains 636 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. The temperature is changed from 293.2 to 295.8 K
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
What are (a) the lowest frequency, (b) the second lowest frequency, and (c) the third lowest frequency for standing waves on a wire that is 7.65 m long, has a mass of 131 g, and is stretched under a tension of 448 N?
a block is on a horizontal surface a shake table that is moving back and forth horizontally with simple harmonic motion
A Boeing 747 jet with a wingspan of 60.0 m is flying horizontally at a speed of 295 m/s over Phoenix, Arizona, at a location where Earth's magnetic field is 49.5 µT at 58.0° below the horizontal. What voltage is generated among the wingtips?
A 44.0 kg child is in a swing that is attached to ropes 1.60 m long. The acceleration of gravity is 9.81 m/s2. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions.
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