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Four points have the same magnitude of 2.4 x 10-12 C and are fixed to the corners of a square that is 4.0 centimeter on a side. Three of the charges are positive and one is negative. Find the magnitude of the net electric field that exists at the center of the square.
in general the quantization of transitional motion is insignificant for atoms because of their mass. however this
A train is slowing down from 46 m/s to 12 m/s in 9.0 s. Assume constant acceleration. How far did it travel in this time
An 1150-kg car pulls a 450-kg trailer. The car exerts a horizontal force of 3,800 N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effective friction coefficient of 0.15 for the trailer.
A weather vane initially at rest has a moment of inertia of 0.125 kg · m2 about its axis of rotation. A 63.5 g piece of clay is thrown at the vane and sticks to it at a point 15.5 cm from the axis.
a circular loop of radius 8 cm lies in a uniform magnetic field with the field perpendicular to the loops plane. the
A Carnot engine whose high-temperature reservoir is at 580 K takes in 520 J of heat at this temperature in each cycle and gives up 309 J to the low-temperature reservoir.
Two parallel square metal plates (side length: 13 cm) are separated by a dielectric material with a dielectric constant 3.9 and a thickness of 2.4 mm. The plates are connected to a 11 V power source and allowed to fully charge.
Consider a uniformly charged sphere of radius R and charge density ?. Describe the motion of a test charge Q, that moves without friction in a diagonal tunnel drilled through the sphere.
The magnetic flux through one turn of a 52-turn coil of wire is reduced from 28.1 Wb to 4 Wb in 0.10 s. Find the total resistance of the wire
an astronaut on a distant planet wants to determine its acceleration due to gravity. the astronaut throws a rock
An airplane has an effective wing surface area of 15 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 63.9 m/s, while the air speed beneath the wings is 51.5 m/s. What is the weight of the plane?
After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. explain the entering speed of the bullet.
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