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An artillery gun is firing a shell with the initial velocity V0 =250 m/s at an angle 1 =60o to the horizontal. After some time interval t, the gun fires another shell at an angle 2 =45o. The two shells collide in the mid-air. Find the time interval t between shots.
The valuable coefficient of kinetic friction
A 60 kg woman stands on a very light, rigid board that rests on the bathroom scale at each end. She is 1.5m away from one side and 0.5 m from the other.
Suppose a large conducting slab is polarized (one side is positive and the other is negative) What is the electric field force (E) inside the slab
You observe that the hammer hangs at rest with respect to the bus when the angle between the rope and the ceiling of the bus is 79. Illustrate what is the acceleration of the bus?
A model-train transformer plugs into 120-V ac, What voltage is present across the tracks
Some amusement park rides move you back and forth in the horizontal direction. Why is this motion so much more disturbing to your body than cruising at a high speed in a jet airplane.
The next three problems refer to two point charges A and B on the x-y plane, Find the x-coordinate of the point on the x-axis where the electric field is zero
A piece of copper wire has a resistance per unit length of 6.45 10-3 ?/m, Find the magnetic field strength at the center of the coil
What is the gauge pressure of the water at the pump? Suppose steady, laminar flow of water, no viscosity, and no air drag on the water jet. The acceleration of gravity is 9.81 m/s2.
A parallel plate capacitor consists of 2 square plates 19 cm per side spaced .55 mm apart with only air between them. What is the maximum energy that can stored by the capacitor
Two charges are held 0.5 m apart and exert a force of 32 N on one another. what is the force they exert on one another
A bolt is to be tightened with a torque of 8.0 Nm. what is the least amount of force you must exert
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