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Q1. Two small insulating spheres with radius 7.50×10-2 m are separated by a large center-to-center distance of 0.455 m. One sphere is negatively charged, with net charge -2.25 mu C, and other sphere is positively charged, with net charge 4.00 mu C. The charge is uniformly distributed within the volume of each sphere
Q2. An object moves along the x axis according to the equation x(t) = (3.00t2 - 2.00t + 3.00) m. find out (a) average speed between t = 2.00 s and t = 3.00 s, (b) instantaneous speed at t = 2.00 s and at t = 3.00 s, (c) average acceleration between t = 2.00 s and t = 3.00 s, and (d) instantaneous acceleration at t = 2.00 s and t = 3.00 s.
A motorcycle has a constant speed of 28.1 m/s as it passes over the top of a hill whose radius of curvature is 130 m. Find the magnitude of the centripetal force
Find the mechanical energy of a block-spring system having a spring constant of 0.67 N/cm and an oscillation amplitude of 1.5 cm
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum charge on the dome
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
The magnetic field component of the electromagnetic wave is 15.0 uT. What is the magnetic energy density of the wave
If a chain of 35 identical short springs linked end-to-end has a stiffness of 400 N/m, what is the stiffness of one short spring
Three children each of weight 356N make a long raft by lashing together logs of diameter 0.30m and length 1.8m. how many logs will be needed to keep them afloat in fresh water. take density of the logs to be 800kg/m^3.
A weather vane initially at rest has a moment of inertia of 0.116 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
An emf of 22.0 mV is induced in a 497 turn coil when the current is changing at a rate of 9.0 A/s. What is the magnetic flux through each turn of the coil
Concrete is pumped from a cement mixer to the place it is being laid, instead of being carried in wheelbarrows. What is the viscosity of the concrete, assuming the flow is laminar
The catapult on an aircraft carrier can take an aircraft from 0 to 192 mph in 12 seconds, at which time the aircraft launches
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