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Compute the electric field (magnitude and direction) at the upper right corner of a square 1.22 m on a side if the other three corners are occupied by 2.45×106C charges. Suppose that the positive x-axis is directed to the right.
(Don’t forget the direction in degrees)
A laser beam is directed at the Moon, 380,000 {\rm km} from Earth. The beam diverges at an angle\theta of 7.4×10-5 rad. What diameter spot will it make on the Moon
A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.00 cm thick flat piece of crown glass and back to air again. At what angles do the two colors emerge from the glass
Two trains on separate tracks move toward each other. Train 1 has a speed of 129 km/h; train 2 a speed of 75.0 km/h. What is the frequency heard by the engineer on train 1
A proton is confined within an atomic nucleus of diameter 4.1 fm. Estimate the smallest range of speeds
A 15 N horizontal force pushes a block weighing 4.8 N against a vertical wall, what is the force on the block from the wall
The velocity of the car at the end of the fifteen-second period is +20.6 m/s. The ratio of the average acceleration values is a1/a2 = 1.50. Find out the velocity of the car at the end of the initial ten-second interval.
a defect in a diamond appears to be 2.18 mm below the surface when viewed from directly above that surface. how far
two long wires are seperated by a distance of 33 cm and carry current in the same direction. wire a carries a current
The U.S. Army's parachuting team, the Golden Knights, are on a routine jumping mission over a deserted beach. With what average force did the parachuter hit sand
A 2.8 V battery is connected to a small light bulb with a resistance of 2.2 ohms. What is the current in the bulb
The position of a 250g object is given (in meters) by x=5.0t^3 -8.0t^2 -44t , where t is in seconds. Determine the net rate of work done on this object
A rectangular loop with dimensions 4.20 cm by 9.50 cm carries current I . The current in the loop produces a magnetic field at the center of the loop that has magnitude 3.40×10?5 T and direction away from you as you view the plane of the loop.
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