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A positive point charge with a mass of 0.43 kg is placed on a string and hangs vertically. Another negative point charge is placed directly beneath this charge a distance of d. Due to its weight and the electric force, the tension in the string is 22.8 Newton’s. The negative charge is then moved directly to the left of the charge and the charge on the string swings to some angle and comes to equilibrium. When the charge on the string is in equilibrium, the negative charge is four times further away from its initial position below the charge. With respect to the vertical, to what angle, in degrees, does the charge on the string swing?
A simple harmonic oscillator with m = 0.740kg and total energy E = 125J has amplitude 1.65m, Find the maximum acceleration
If a Capacitance of PPC is 12 PF. Distance between its plates is reduced to half, What would the new capacitance of the capacitor
A 4.30 capacitor that is initially uncharged is connected in series with a 7.90 resistor and an emf source with 225 negligible internal resistance. what is the voltage drop across the capacitor
in proton-beam therapy a high-energy beam of protons is fired at a tumor. the protons come to rest in the tumor
A bullet with mass 20 grams and velocity 118 m/s collides with a wooden block of mass 2.0 kg. The wooden block is initially at rest, and is connected to a spring with k = 850 N/m. The other end of the spring is attached to an immovable wall.
Light enters a container of liquid at an angle of 42 degree to the normal; Evaluate the index of refraction of this liquid
current passes through a solution of sodium chloride. in 1.00 second 2.68 x 1016 na ions arrive at the negative
A spherical brass shell has an interior volume of 1.33 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.77 x 10-3 m3. what is the volume of mercury that spills out of the hole
q1.a race car starts from rest on a circular track of radius 453 m. the cars speed increases at the constant rate of
Every year, there is a foot race to the top of the Empire State Building. what was his average power output during the race
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
suppose you look through a 3.7 mm thick window comprised of a material whose refractive index is 1.57.a by what time
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