Other Physics Answers

A satellite orbits the earth at a speed of 8*10∆3m/s.calculate the period of orbit of the satellite if the distance between the centre of the earth and satellite is 6400km

A force of 3i+2j+4k N gives displacement of 10j m.the work done is?

A. 20J

B. 26J

C. 32J

D. Zero

1.A positive charge of 10 -8 C experiences a force of 0.25 N when located at a certain point in an electric field. Find the intensity of the electric field at that point.

  In an electric lamp, 2.50C pass through each second. How many electrons does this represent?

If a= (2,1,-1), b=(1,-1,1) then a × b is

A bus initially with a speed of 25 m/s slows down with an acceleration of -3 m/s2. How far does it travel before coming to a complete stop?

How much work is needed to decreases the distance between a +15 µC charge

and a -20 µC charge from 1 m to 0.25 m?

Hawkeye pulls a quiver attached to his bow back 61 cm by exerting a force that increases uniformly with distance from 0 to 257 N. How much work does Hawkeye do on the string?

If Q₂ and Q₃ are separated by a distance of 20 cm and have the same charge of 50μC, what is the magnitude of the force between them?

Two parallel straight wires 10.0 cm apart carry currents in opposite directions. Current I₁ = 5.0 A is out of the page, and I₂ = 7.0 A is into the page. Determine the magnitude and direction of the magnetic field halfway between the two wires.