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A homemade capacitor is assembled with placing two 9 in pie pans 8 cm apart and connecting them to the opposite terminals of a 9 V battery.
1. Estimate the capacitance. in pF
2. Estimate the charge on each plate. in pC
3. Estimate the electric field halfway among the plates. in V/m
4. Estimate the work done by the battery to charge the plates. in J
A 40 gram ball of clay traveling east at 3 m/s collides and sticks together with a 60 gram ball of clay traveling north at 4.50 m/s. Obtain the speed of the resulting ball of clay
If you tied the string from the previous problem to a wooden block, What is the minimum volume of wooden block you could use? The density of wood is 600 kg/m3
two parallel metal plates have area a 255 cm2 and are separated by l 0.50cm. they have a potential difference of 0.25
show that the rotation matrix between two coordinate systems can be calculated from knowledge of the position vectors
A cubical box 20cm on a side is constructed from 1.5cm -thick concrete panels. What is the air temperature inside the box when the light is on if the surrounding air temperature is 20 ?C
Three resistors, 28, 46, and 78 %u03A9, are connected in series, and a 0.47-A current passes through them. find the potential difference across the three resistors
A small 1.85-GBq 198Au source (maximum beta-particle energy0.961 MeV, average 0.315 MeV) is enclosed in a lead shield justthick enough to absorb all the beta particles. a) Estimate the energy ?uence rate due to bremsstrahlung ata point 50 cm away.
A -6.0 diopter lens is held 10.0 cm from an ant that is 1.0mm high. What is the height of the image
A box rests on top of a flat bed truck. The box has a mass of m = 16.0 kg. The coefficient of static friction between the box and truck is ?s = 0.81 and the coefficient of kinetic friction between the box and truck is ?k = 0.63. * The truck accele..
The generator in a purely capacitive AC circuit has an angular frequency of 126? rad/s and a maximum voltage of ?Vmax = 129 V. what is the RMS current in the circuit
Two identical sinusoidal traveling waves are moving in the same direction along a stretched string. The amplitude of the resultant wave is 1.80 times that of the common amplitude of the two combining waves. What is the phase difference between the..
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 236 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
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