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A projectile (mass = m) is launched vertically upward with initial velocity v. When it has reached a height h above its launch position, it is still moving upward, but at that moment it explodes into two pieces. Immediately after the explosion, piece A (mass = mA) is moving at a speed vA at an angle of thetaA below the horizontal. A certain time Dt after the explosion, piece B strikes a nearby cliff with an average force magnitude Favg.Bcliff exerted on it by the cliff during its impact (and the piece stops completely as a result). For what time interval was this impact force exerted? You may consider these values as known: m, v, h, mA, vA, thetaA, Dt, Favg.Bcliff, g.
The intensity of solar radiation at the top of the Earth's atmosphere is 1506 W/m2. find the amount of solar energy you absorb
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. What are the charges of the sphere and the rod
A circular coil of wire 8.40cm in diameter has 16.0 turns and carries a current of 2.60A . The coil is in a region where the magnetic field is 0.580 T, What is this maximum torque in part (A)
An ocean liner leaves New York City and travels 34.0° north of east for 169 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the subsequent directions.
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
A Styrofoam slab has thickness h and density ?s . When a swimmer of mass m is resting on it, Find the area of the slab
Heather and Jerry are standing on a bridge 46 above a river. Heather throws the rock straight down with a speed of 20. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Overlook air resistance.
Determine the net charge contained within the cube.
The closest star to our solar system is Alpha Centauri, which is 4.30 light years away. How much time would elapse on a clock on the Earth
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 4.50 mT. obtain the speed of the electron
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. What is the work done by friction on the crate
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