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A - 5.00 nC point charge is on the x axis at x = 1.20 m . A second point charge Q is on the x axis at -0.600m. a) What must be the sign and magnitude of Q for the resultant electric field at the origin to be 45.0N/C in the + x direction? b)What must be the sign and magnitude of Q for the resultant electric field at the origin to be 45.0N/C in the - x direction?
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
What is the pressure at the bottom of a swimming pool which is 12ft deep and contains fresh water.
The magnitude of earth's magnetic field is 50.0 µT and makes an angle of 30° with the plane of the coil. Assume a patient takes 1.50 s to inhale, find the magnitude of average induced emf in the coil during that time.
A 1600 kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16430 N on the sub, with a downward resistive force of 1000 N. What is the submarine's acceleration.
What is the net force exerted on the skier, assuming his acceleration is constant.
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity.
A runner covers one lap of a circular track 40.0m in diameter in 63.5s a) average speed for that lap? b) average velocity for that lap? c) If she covered the first half-lap in 28.6s , what was her average speed for that half-lap?
A 400 kg car sits 2 m to the right of a fulcrum assume car is on a weightless rod, how far to the left of the fulcrum should an effort of 200 N be applied to keep the system in quilibrium.
250 kg ball is dropped to the floor from a height of 1.0 m and upon rebounding, reaches a height of .60 m. What is the impulse delivered to the ball by the floor?
What is the direction of this velocity. What is the magnitude of the velocity.
The top of a refrigerator has an area of 0.6m2. The height of the refrigerator is 180 cm. What volume does refrigerator occupy in cubic meters.
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