A charge of 3.32 C is fixed at the center of a compass Two additional charges are fixed on the circle of the compass radius 0.136 m The charges on the circle are 3.73 C at the position due north and 4.30 C at the position due east What is a the magnitude and b direction of the net electrostatic force acting on the charge at the center Specify the direction as an angle relative to due east?

What are two different ways you could find the value of a? explain these methods.

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?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost