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Small charged sphere, mass m = 1.2 x 10-4 kg and charge q = 3.2 nC is suspended (floating) a very small distance above a very large sheet charge due to electrostatic forces. What is the charge density (charge per area) of the sheet essential for this to occur?
A proton with v = 374 m/s is moving through a region in which the magnetic field is B = 2.8 T. what angle does the protons velocity make with B
A person can jump a horizontal distance of 2.80m on Earth. How far could the person jump on the moon, where the free-fall acceleration is g/6 and g=9.81 m/s2?
Light travels a distance of 0.945m in 4.50ns in a given substance. What is the index of refraction of this substance
Coefficient of linear expansion for aluminium
An RC circuit with C = 38.8 µF and R = 6.5 has a 27 V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed. What is the voltage across the capacitor at that time
a show that the function yxt x2 v2t2 is a solution to the wave equation by calculating the following quantities and
A transverse wave on a string is described by the equation y(x, t) = (2.30 cm) sin[(100 rad/s)t + (18 rad/s)x]. How fast does the wave move along the string
a dog is walking slowly toward a motion detector. Draw a position graph that could represent this motion. Show your work.
A 10 cm long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.8 nC, is 4.2 cm from the center of the rod. What is the magnitude of the force of the bead.
A 3.0-kg block is traveling in the -x direction at 5.0 m/s, and a1.0-kg block is traveling in the +x direction at 3.0 m/s. (a) Find hte velocity Vcm of the center of mass.
a helium baloon is used to lift something which weighs 100n. the layer of the baloon weighs 50n and the volume of the
A uniform road of cross section area A and length L has material properties E (Young's modulus) and p (mass per unit length). The rod is anchored at one end but has a forcing function Fosin wt at the other end. The governing partial differential e..
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