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A very long, straight solenoid with a cross-sectional area of 6.00cm squared is wound with 40 turns of wire per centimeter, and the windings carry a current of 0.250A . A secondary winding of 2 turns encircles the solenoid at its center. When the primary circuit is opened, the magnetic field of the solenoid becomes zero in 5.00×10?2s . What is the average induced emf in the secondary coil?
With a particular grating a doublet of the two wavelengths 731.3 and 732.1 nm is viewed in the third order at 9.3° to the normal and is barely resolved. Find the total width of the rulings in nanometers
A parallel-plate capacitor is constructed from two 13cm X 13cm electrodes spaced 0.90mm apart. The capacitor plates are charged to ± 20nC, How much energy is stored in the capacitor
The radial acceleration of the tip of the second hand of a clock is .0033 m/sec2. What is the lenght of the second hand of this clock?
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
The first star on the handle of the Big Dipper and the star that forms the far bottom edge of the bowl(Merak).
You're doing a double-slit experiment with two different colors. What's the wavelength of that color
A fireman 44 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 22° above the horizontal. If the speed of stream as it leaves the hose is 40m/s, at what height will stream of water strike the buil..
A plank 2.00 cm thick and 12.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
A 56 kg astronaut floating at rest in space outside a space capsule throws his 0.50kg hammer such that it moves with the speed of 14.00 m/s relative to the capsule. What happens to the astronaut? What is the astronaut's speed.
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 and find the average power generated by the horn.
What is the magnitude of the magnetic forces on each of three sides?
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