Q. Three charges q = 0.380 C form an equilateral triangle, 1.60 m on a side. Using energy that is supplied at the rate of 0.65 kW, how many days would be required to move one of the charges to the midpoint of the line joining the other two charges?
Q. A mass of 2.6 kg is connected to a horizontal spring whose stiffness is 7.5 N/m. When the spring is relaxed, x = 0. The spring is stretched so that the initial value of x = +0.18 m. The mass is released from rest at time t = 0. Remember that when the argument of a trigonometric function is in radians, on a calculator you have to switch the calculator to radians or convert the radians to degrees.