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Three identical conducting spheres form an equilateral triangle of side length d = 17.5 cm. The sphere radii are much smaller than d and the sphere charges are qA = -1.91 nC, qB = -5.00 nC, and qC = +9.25 nC. (a) What is the magnitude of the electrostatic force between spheres A and C? The following steps are taken: A and B are connected by a thin wire and then disconnected; B is grounded by the wire, and the wire is then removed; B and C are connected by the wire and then disconnected. What now are the magnitudes of the electrostatic force (b) between spheres A and C and (c) between spheres B and C?
A planet with a mass of 4.47E21 kg is in a circular orbit around a star with a mass of 4.83·1030 kg. The planet has an orbital radius of 1.31E10 m. What is the linear orbital velocity of the planet
how come the formula: (change)v / (change)t = (change)x cannot be used for this exercise When a 58-g tennis ball is served, What is the magnitude of the net force acting on the ball
A fire hose 10 cm in diameter delivers water at the rate of 22 kg/s . The hose terminates in a nozzle 2.1 cm in diameter. What is the flow speed in the nozzle
Find the acceleration of a forklift of mass 1400 kg pushed by a force of 2100 N that is opposed by a frictional force of 425 N.
A spring is hung from the ceiling. A 0.322 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
Air is streaming horizontally past a small airplanes wings such that the speed is 50m/s over the top surface and 30 m/s past the bottom surface. the plane has a mass of 300 kg and a total wing area of 5 m^2(both wings).
a truck covers 42.0 m in 8.10 s while smoothly slowing down to final speed of 2.70 ms. a find its original speed. b
A laser used to weld detached retinas emits light with a wavelength of 654nm in pulses that are 20.2ms in duration. How much energy is in each pulse
In order to calculate the number of ways of arranging a givenamount of energy in a tiny block of copper, How many atoms are in the copper block
The water jet of a fountain is let out at a speed of 80 ft/s and an angle of 60 degrees. determine the radius of curvature of the jet at its highest point
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
Find out a magnitude and direction of the electric field
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