1. Describe the process and results you used to determine the force exerted by the hockey stick on the puck. Puck mass = 169.7g

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Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight