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How much work is required to turn an electric dipole 180° in a uniform electric field of magnitude E = 42.0 N/C if p = 2.50 10-25 C·m and the initial angle is 47°?
The total area of an airplane's wings is 40.0m2 and it's weight is 49.0KN. the density of air is 1.3kg/m3. calculate the speed over the bottom surface
An object of mass 10 kg is initially at rest. What is the change in the kinetic energy of this object
A luminous object is 5.00 m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object
An automobile having a mass of 1000 kg is driven into a brickwall in a safety test. What was the speed of the car before impact
The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What does it weigh on the moon
A golf ball of mass 0.045 kg is hit off the tee at a speed of45 m/s. The golf club was in contact with the ball for 5.0 x10-3 s. evaluate the average force exerted on the ball by the golfclub
At a point near the equator, the Earth's magnetic field is horizontal and points to the north. If an electron is moving vertically upward at this point, does the magnetic force acting on it point north, south, east, west, upward, or downward?
A 3.1 kg block slides down a frictionless ramp, as shown in the figure. The top of the ramp is 1.6 m above the ground; What is the speed of the block when it leaves the ramp
the air speed of a plane is 320km/h. A wind is blowing fromthe southeast at 129km/h. the piolet wishes to fly directly west. calculate the ground velocity of the plain
As shown in the figure above, a ball of mass 0.36 g and positive charge q =36.4 mC is suspendedon a string of negligible mass in a uniform electric field. Weobserve that the ball hangs at an angle of J=15.0 degrees from the vertical. What is the ..
q1. a 52.0 skateboarder wants to just make it to the upper edge of a quarter pipe a track that is one-quarter of a
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
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