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A closely packed coil of 500 turns carriers a current of 2.0 A. If the magnetic flux through the coil is 8 x 10^-3 Wb, at what rate must the current change in order to induce an emf of 75V?
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted, find the cutoff wavelength
Assuming wind forces can be neglected, what is the highest that one can make a solid concrete tower of uniform cross-section (Take the density of concrete to be 2,400 kg/m^3)
question1drawing velocitytime graphs of the following motions-a a city bus that is moving with a constant velocityb a
A 1500-kg car moving east at 17 m/s collides with a 1800-kg car moving south at 15 m/s and the two cars stick together. What is the velocity of the cars right after the collision
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 2.4 mm in diameter. what is the angular spread of the beam
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g%u2019s. what is the maximum allowed braking force
One fish leaps with an initial velocity at the water surface of 12.5m/s at an angle of 33.0 degrees above the horizontal
When a certain air-?lled parallel-plate capacitor is connected across a battery, it acqquires a charge (on each plate) of magnitude 131 µC. What is the dielectric constant of the slab
A 2.5 kg stone is dropped from a height of 4m. What is its momentum on impact
A long solenoid (cross-sectional area = 0.85 x 10-6 m2, number of turns per unit length = 1878 turns/m) is bent into a circular shape so it looks like a doughnut, Find the emf induced in the toroid
Force F = -13jhatN is exerted on a particle at r = (3ihat+5jhat)m. What is the torque on the particle about the origin
A parallel-plate capacitor in air has a plate separation of 1.49 cm and a plate area of 25.0 cm2. Determine the change in energy of the capacitor
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