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A man stands on the roof of a building of height 13.0and throws a rock with a velocity of magnitude 30.0 at an angle of 34.9 above the horizontal. You can ignore air resistance.(A) Calculate the maximum height above the roof reached by the rock.Take free fall acceleration to be 9.80(B) Calculate the magnitude of the velocity of the rock just before it strikes the ground.Take free fall acceleration to be 9.80(C) Calculate the horizontal distance from the base of the building to the point where the rock strikes the ground.Take free fall acceleration to be 9.80
You have a 1.0 m long copper wire. You want to make an N -turn current loop that generates a 1.0 mT magnetic field at the center when the current is 1.0 A, What will be the diameter of your coil
A crystal is irradiated with X-ray photons with energies of 1.65 × 10-15 J. At what angles of incidence will the X-rays reflect from the crystal
The plane of a single circular loop with radius 0.1 m is held so the area vector of the loop is facing the North direction. what is the induced EMF in the loop
You are practicing throwing darts in your dorm. You stand 2.89 m from the wall on which the board hangs. Calculate the speed of the dart when it hits the board
A conducting wire is quadrupled in length and tripled in diameter. By what factor does its resistance change
A 12.5 gram bullet is fired into a board. The board is subjected to a force of 3.50x104 Newtons when it hits the board. If the bullet travels 3.50 cm before coming to a stop, what was the initial speed of the bullet
An airplane traveling at 480 km/h needs to reverse its course. The pilot decides to accomplish this by banking the wings at an angle of 38o. Find the time needed to reverse course
An electron traveling at 993 m/s enters a 1.5 T magnetic field. The angle between the velocity and the field is 90o. Find the radius of the resulting circular path.
A space heater, operating from a 120V line, has a hot resistance of 14Ω. At what rate electrical energy transfered into heat
A certain circuit consists of an inductor of 50 mH in series with a resistor of 180 ?. How long will it take for the current to fall to 7.6 A
A child in a boat throws a 5.15-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest
A single-turn wire loop is 3.6cm in diameter and carries a 620mA current. Find the magnetic field strength on the loop axis, 22cm from the center
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