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In a lightning bolt, a large amount of charge flows during a time of 2.6 x 10-3 s. Assume that the bolt can be represented as a long, straight line of current. At a perpendicular distance of 22 m from the bolt, a magnetic field of 7.4 x 10-5 T is measured. How much charged has flowed during the lightning bolt?
At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod.
The rope makes an angle of 70° with respect to the vertical. What is the tangential speed of the ball.
Three equal point charges, each with charge 1.10 , are placed at the vertices of an equilateral triangle whose sides are of length 0.200. Calcualte the electric potential energy of the system?
On a spacecraft, two engines fire for a time of 598 s. One gives the craft an acceleration in the x direction of ax = 4.92 m/s^2, Calculate the magnitude of the initial velocity
Announcers at a certain radio station say that they are at "95 FM on your dial," meaning that they transmit at a frequency of 95 MHz (95 megahertz, or 95 million cycles per second). What is the wavelength of the radio waves from this station?
a 0.90 kg book rests on a table. A downward force of 3.5 N is exerted on the top of the book by a hand pushing down on the book. What is the gravitational force acting on the book
If the coefficient of static friction is 0.951, illustrate what is the maximum speed that the car can take without skidding?
An electric field is set up between two parallel plates, each of area 2.2 m2, by putting 1.0 C charge on one plate and the -1.0 C charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates ..
A diver leaves the end of a 4.0-m-high diving board and strikes the water 1.3 s later, determine magnitude of velocity when she enters the water
A 10.0kg block of ice is sliding due east at 8.00 m/s when it collides elastically with a 6.00kkg block of ice, Determine the velocities of the blocks of ice
A railroad car of mass 2.52 104 kg is moving with a speed of 4.06 m/s. It collides and couples with three other coupled railroad cars, How much mechanical energy is lost in the collision
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
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