The steel wire working a signal is 750 m long and 0.5 cm diameter. Assuming a pull on the wire of 1.5 kN, find the movement which must be given to the signal-box end of the wire if
the movement at the signal end is to be 17.5 cm. Take Young’s modulus as 200 GN/m2

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

If element x has 99 protons how many electrons does it have