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A rectangular coil of 100 turns measure 40cm by 20cm. This coil is placed next to an electromagnet which is switched on, increasing the magnetic field through the coild from zero to .8T in 50ms. If the resistance of the coild is 2ohms, what are the induced voltage and current in the coil?
At what angle should the axes of two Polaroids be placed so as to reduce the intensity of the incident unpolarized light to 1/5
A certain type of laser emits light that has a frequency of 5.6 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 3.9 x 10-11 s.
A horizontal beam of electrons initially moving at 4.0x10^7 m/s is deflected vertically by the vertical electric feild between oppositely charged parallel plates
A hot air balloon decends toward the ground with a velocity of (1.6 m/s). A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.
The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
Light of wavelength 580 nm passes through a slit of width 0.210 mm. How far is the screen from the slit
A 6 cm diameter conducting loop with resistance of 10m\Omega is placed perpindicular to a variable magnetic field B. Determine the current and its direction induced in the loop
Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/(m*K)], How thick should the air layer (contained within the fur) be so that the bear loses heat at a rate of 51.1 W
An observation satellite orbits the planet at a height of 1000. What is the projectile's speed as it passes the satellite
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling in the opposite direction on the other side of the highway. What is the speed of the vehicle
A 500-g block is released from rest and slides down a frictionless track that begins 2.00 m above the horizontal. At the bottom of the track, What is the velocity of the mass just before it strikes the spring
an airplane propeller is rotating at 3293 rev/min when one of the blades breaks off at the hub. what is the angular velocity of the rotational motion of the blade about its own center of mass
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