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Two small metallic spheres, each of mass 0.20 g, are suspended as pendulums by light strings from a common point as shown in the figure below. The spheres are given the same electric charge, and it is found that they come to equilibrium when each string is at an angle of 7.0° with the vertical. If each string is 30.0 cm long, what is the magnitude of the charge on each sphere?
In a series circuit, r=21ohms L=25mH C=17uF V=150v and w=637rad/s, Calculate the peak current in the circuit
Ball A is dropped from the top of a building of height H at the same instant ball B is thrown vertically upward from the ground. First consider the situation where the balls are moving in opposite directions when the collide.
two tiny conducting spheres are identical and carry charges of -18.7c and 47.5c. they are separated by a distance of
What is the minimum thickness of the filmA thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.51). What is the minimum thickness of the film
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. What is the speed of the electron when it exits the hole in the plate
Two identical guitar strings are prepared such that they have the same length (2.17 m) and are under the same amount of tension. find the wave propagation speed on the guitar strings
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How long will the mortar shell remain in the air
1 what is the lens equation? what do o i and f stand for in the equation?2 what are the five parts of the optical bench
0.45 kg of a metal at 90.°C is added to 0.40 kg of water at 20.0°C. If the final temperature of the mixture is 26.°C, what is the specific heat of the metal
A charged sphere of mass 3.00E-04 kg is suspended from a string. Find the magnitude of the electric force
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 3 cm. What is the electric field on the axis of the washer
a 50-g bullet is fired from a rifle having a barrel 0.540 m long. choose the origin to be at the location where the
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