A charged cork ball of mass 1.50 is suspended on a light string in the presence of a uniform electric field as shown in Figure. When = (2.50+ 6.00)×105 /, the ball is in equilibrium at =35.08. Find (a) the charge on the ball (b) the tension in the string.

How is the gravitational force related to the distance between two objects?

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.