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Q1. An underwater diver sees the sun 56 above parallel.How high is the sun above the horizon to a fisherman in a boat above the diver?
Q2. You have a hand-crank generator with a 100-turn coil (each turn having an area of 0.0500 m2), which can spin through a uniform magnetic field that has a magnitude of 0.0500 T. You can turn the crank at a maximum rate of 3 turns per second, but hand crank is connected to the coil through a set of gears that makes the coil spin at a rate 6 times larger than the rate at which you turn the crank. What is the maximum emf you can expect to get out of this generator?
a 20 kg cart that is to be rolled up a 5 meter long 2 meter high ramp. what would be its velocity when it reached the bottom
A flight attendant pulls her 63N flight bag a distance of 308m along a level airport floor at a constant velocity. The force she exerts is 45N at an angle of 57° above horizontal. Find the work she does on flight bag.
The displacement of a standing wave on a string is given by D = 8.8 sin(0.60x)cos(50t), where x and D are in centimeters and t is in seconds. (a) What is the distance (cm) between nodes
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown
A battery is designed to have an EMF of 12.0V. When the battery is connected to an unknown resistor in series the terminal voltage drops down to 10.0V. what is the value of the unknown resistor
A 1000 kg artillery shell is fired from a battleship. What net external force is exerted on the artillery shell before it leaves the barrel of the gun
A piece of Nichrome wire passes a current of 0.933 A when a potential of 1.64 Volts is applied. What is the resistance of the wire
The question below was asked before, but this seems to ignore that the launching machine should have static friction as well, How far would the launching machine slide on the Moon
Monochromatic light falling on two slits 1.5×10?2mm apart produces the fifth-order fringe at an 8.9?angle.
A 3.1-cm-tall object is 47 cm in front of a converging lens that has a 11.8 cm focal length. Calculate the image position and height. position cm height cm.
A photon of wavelength .1 nm scatters from a free electron at rest. Find the wavelength of the scattered photon
When two identical ions are separated by a distance of 8.3x10^-10m and the electrostatic force each exerts on the other is 5.3x10^-9N How many electrons are missing from each ion
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