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Two positive point charges are held in place, 0.60 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?
A curve of radius 53.8 m is banked so that a car of mass 2.5 Mg traveling with uniform speed 56 km/hr can round the curve without relying on friction to keep it from slipping on the surface
A submarine is 304 m horizontally out from the shore and 126 m beneath the surface of the water. A laser beam is sent from the sub so that it strikes the surface of the water at a point 232 m from the shore. If beam just strikes the top of a building..
A small 12.5g plastic ball is tied to a very light 27.8cm string that is attached to the vertical wall of a room. Find the magnitude of the electric field in the room
A horizontal beam of electrons initially moving at 3.9 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates as shown in the diagram. The magnitude of the field is 1.70 104 N/C.
A tennis ball is dropped from a height of 190 cm above theground. It has a mass of .0572 kg. How can I figure out the speedof the ball just before it hits the ground, and the speed of theball just before it leaves the ground, using the conservation o..
A 20 g bullet traveling at 300 m/s is shot into a 4.0 kg block at rest on a frictionless horizontal surface. What is the speed of the block right after shooting
Suppose there are two concentric thin walled conducting spheres, the inner one of radius 10 cm and the outer one of radius 12 cm. If the inner one has a charge of 2.2 C and the outer one has -2.2 C, what is the E field at a point 11 cm from the ce..
A group of students are camping in the middle of the forest on a very dark night. Their torch batteries went flat hours ago. find the speed of the unidentified noisy object
q1. if a car travelling at 63 kmh will skid 18 m when its brakes lock how far will it skid if it is travelling at 150
A magnetic field is oriented at an angle 42 degrees to the normal of a rectangular aread 5.5 cm by 6.8 cm. evaluate the strength of the magnetic field
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
A capacitor is made from a thin wire of charge density lsurrounded by material with dielectric k = 2 to a radius a, What is the capacitance per unit length of this geometry
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