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Two very small spheres are initially neutral and separated by a distance of 0.60 m. Suppose that 8.2 x 1013 electrons are removed from one sphere and placed on the other. What is the magnitude of the electrostatic force that acts on each sphere?
The work function of an element is 3.2 eV. Photons of a certain energy are found to eject electrons with a kinetic energy of 2 eV. What is the speed of the ejected electrons
A 6x10^-6 F capacitor is initially charged to 100V, then is connected across a 500Ohm resistor. What is the initial charge on the capacitor
Consider single slit Fraunhofer, what is the ratio of irradiance at the central peak maximum to the first of secondary peak
what types of everyday materials have properties of both solids and liquids?what solids may be mistaken for liquids and
A 29? and a 41? resistor are in series, Find the current when this series combination is connected across a 12V battery
An object initially at rest explodes in two fragments of masses 2.6 kg and 3.3 kg that move in diametrically opposite directions. find the internal energy of the explosion
a ball of mass 1.00kg moves due east at 3.00 m/s. a ball of mass 2.00 kg moves due south at 2.00 m/s. they collide at the origin. what is the final velocity of the other ball
If the spring is pulled until it stretches 2.40cm and the pack remains at rest, what is the force of friction exerted on the backpack by the table
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
A barge has vertical sides and a flat bottom of 320 ft^2 area. when partially filled, the barge is immersed in fresh water to a depth of 2 ft. upon removal of the load the barge rises 16.0 in.
When an electric turntable is first switched on, it accelerates at a constant rate through (+)1.25 revolutions in order to attain its full operating speed of 78.0 rpm.
A spaceship of mass 2.20×106kg is cruising at a speed of 4.20×106m/s when the antimatter reactor fails, blowing the ship into three pieces
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