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A 0.80 meter Aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the bar hits the river below, its speed is 22 meter per second, and the emf induced across its length is 6.5E-4 Volt. Assuming the horizontal component of the earth's magnetic field at the location of the bar points directly north,
A) Find the magnitude of the horizontal component of the earth's magnetic field?
B) State whether the east end or the west end of the bar is positive.
You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. what is the maximum magnification you could achieve
The alveoli have an average radius of 0.117 mm and are approximately spherical. If the pressure in the sacs is 5.00 105 Pa, how many air molecules are in an alveolus
A small plane tows a glider at constant speed and altitude. If the plane does 2.09 105 J of work to tow the glider 130m, what is the angle between the tow rope and the horizontal
when free from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2vB. Find the potential at B.
When the power is turned off on a turntable spinning at 59.0rpm, What is the angular acceleration (in rad/s2), of this turntable
calculate the electric field at the center of a square 50.6 cm on a side if one corner is occupied by a 43.0 microc
A 6.3 μC point charge and a -1.7 μC point charge are separated by a distance of 0.00035 meter. Obtain the electric potential energy of this system
A pulley of 5.0cm radius, on a motor, is turning at 30 rev/sand slows down uniformly to 20 rev/s in 2.0s. Calculate the angular acceleration of the motor
You throw a ball toward a wall at speed 39.0 m/s and at angleθ0 = 37.0° above the horizontal (Fig. 4-35).The wall is distance d = 19.0 m from the release point ofthe ball.
A train car with mass m1 = 594.0 kg is moving to the right with a speed of v1 = 7.4 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 4.7 m/s. What is the initial mome..
Two long parallel wires are shown in the figure below. They are separated by a distance L = 17.0 cm. The bottom wire carries a current of 7.10 A in the direction shown. The current of the upper wire is directed in the opposite direction.
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.55Hz, Ignoring the mass of the spring, what is the mass m of the fish
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