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Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.4790 N when separated by 50 cm, center-to-center. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.2819 N. What were the initial charges on the spheres? Since one is negative and you cannot tell which is positive or negative, there are two solutions. Take the absolute value of the charges and enter the smaller value here.
During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between the Moon and the Sun. The Moon has a mass of 7.36 × 1022 kg; Calculate the force exerted on the Earth by the Sun
The muon, with mass mμ=209me, acts as a heavy electron. The muon can bind to a proton to form a muonicatom. Calculate the ionization energy of this atom, and calculate the radius of the muonic atom in its ground state.
A proton (mass 1 u) moving at 5.40 *10^6m/s collides elastically and head-on with a second particle moving in the opposite direction at 2.60 106 m/s. Find the mass and final velocity of the second particle
Calculate the point between Uranus and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero
A charged ion has a mass of 2.5x10^-26 kg and charge 1.25x10^-19 C. Determine the radius of the path
a particle of charge q is fixed at point p and a second particle of mass m and the same charge q is initially held a
two satelities s1 and s2 revolve round a planet in coplanar circular orbits in the same sense. their periods of
A capacitor with 10 microfarad capacitance is connected in series with a resistor of 2.5 mega-ohms. If this capacitor is charged to 4 volts, and the circuit is closed, how many seconds will pass before the voltage drops to 1 volt?
A wheel is spinning at 47 rad/s. It undergoes an angular acceleration of 21rad/s2 until it reaches an angular velocity of 489 rad/s. Decide how long it took to spin up. Decide how many revolutions it made while spinning up.
A positively charged particle of mass 6.2*10-8 kg is traveling north with a speed of 61 m/sand enters a 0.33 T uniform magneticfield. The particle moves through one-quarter of a circle in a timeof 3.0*10-3 s, at which time it leaves the fieldheadin..
Derive the speed of the wave water in a shallow pool of water of depth y. You may consider using a method similar to the derivation of the sound wave equation
Consider a regular hexagon of side length, L = 10cm. A charge, Q = 2µC, is located at each vertex, Find the electric field vector at the center
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