Select the correct answer.
Which factor indicates the amount of charge on the source charge?
OA the number of field lines on the test charge
OB. the number of field lines on the source charge
OC. the direction of lines on the source charge
OD. the direction of lines on the test charge
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53

What is magnetic flux? explain faraday's law of induction.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?