Physics Questions - Only answers needed no explain. 1- 2- 3- Thanks! Two small m

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Physics Questions - Only answers needed no explain.

1-

2-

3-

Thanks!

Two small metallic spheres, each of mass m = 0.192 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 6.8 nC, and they come to equilibrium when each string is at an angle of theta = 4.65degree with the vertical. How long are the strings? A charged cork ball of mass 0.90 g is suspended on a light string in the presence of a uniform electric field as shown in the figure below. When N/C, the ball is in equilibrium at theta = 37.0degree. Find the charge on the ball. Find the tension in the string. A small sphere of charge q1 = 0.728 mu C hangs from the end of a spring as in Figure a. When another small sphere of charge q2 = -0.618 mu C is held beneath the first sphere as in Figure b, the spring stretches by d = 3.36 cm from its original length and reaches a new equilibrium position with a separation between the charges of r = 4.90 cm. What is the force constant of the spring?

Explanation / Answer

1. l= 0.104381 m

2. q = 8.344 *10-9 C

T= 0.006655 N

3.K=50.1915 N/m

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