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A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 6.50 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the water. (Assume nearly normal incidence of light rays.) cm
A battery with \Epslion 12.0 V delivers a termal voltage of 11.2 V to a 45.0 V to a 45.0 \Omega load resistor. Calculate The value of the battery's internal resisance
question1a long solenoid with 70 turns of wire per centimeter carries a current of 0.16. the wire that makes up
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 17.0 rad/s2. Find the speed of a point on the blade 4.95 m from the axis of rotation
The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline air mixture, What minimum voltage must be supplied by the ignition circuit
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. Determine the current in the rods
A step-down transformer produces a voltage of 7.0V across the secondary coil when the voltage across the primary coil is 120V. What voltage appears across the primary coil of this transformer if 120V is applied to the secondary coil?
A tank of water sits at the edge of a table of height 2m. The tank springs a very small leak at its base, and water sprays out a distance of 1.4 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the a..
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.5 m and its radius is 64 cm. What is the weight of the object
A skier of mass 70kg is pulled up a slope by a motor driven cable. the work required to pul him 60m up a 30 degrees slope, What horsepower must a motor have to perform this task
Assuming you can't use the electric heater, you put 0.2kg of water at 20(C) in a thermous. If you move the water up and down a height 10cm twice/second, how long must you shake the water to raise the temperature to 100(C)?
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the current in the primary
A brick is initially 10.56 cm high and an aluminum can is initially 10.57 cm high. By how much must their temperatures be raised in order for the brick
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