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A square coil ( length of side = 24 cm) of wire is placed in a uniform magnetic field that makes an angle of 30 degree with the normal to the plane of the coil. If the magnitude of the magnetic field is changing at the rate of 1.2 T/s, what is the magnitude of the emf induced in the coil?
A softball, of mass m = 0.183 kg, is pitched at a speed v0 = 26.9 m/s. Due to air resistance, by the time it reaches home plate it has slowed by 11.9%. Calculate the average force of air resistance
A 10 kg hammer strikes a nail at a velocity of 8.3 m/s and comes to rest in a time interval of 8.0 ms. What is the impulse given to the nail
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another, What is the speed of the second train
A projectile is fired straight up with a speed 64.4 m/s at a latitude 29o in the Northern hemisphere. find the magnitude of the deflection
find the charge on the block. A very small charged block with a mass of 2.05g is placed on an insulated, frictionless plane inclined at an angle of 17° with respect to the horizontal.
A satellite in Earth orbit has a mass of 106 kg and is at an altitude of 1.94 106 m.(Assume that U = 0 as r ? infinity), What is the potential energy of the satellite-Earth system
Monochromatic light falls on two very narrow slits 0.045 mm apart. Successive fringes on a screen 5.00 m away are 6.2 cm apart near the center of the pattern. estimate the frequency of the light
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for 472.9 and 696.0 in the visible spectrum. What is the minimum thickness of the film.
A hydrogen atom in its first excited state absorbs a photon with an energy of 59.0 eV, What is the kinetic energy of the ejected electron
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 23 to 61 dB
The electric field midway between two equal but opposite point charges is 672N/C , What is the magnitude of the charge on each
A 70kg parachutist whose density is 1050 kg/m^3 is in free fall. Find the buoyant force due to the air and compare with the parachutist's weight
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