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A point charge q1 is held stationary at the origin. A second charge q2 is placed at point a, and the electric potential energy of the pair of charges is +5.4 x 108 J. When the second charge is moved to point b, the electric force on the charge does -1.9 x 10-8 J of work.
What is the electric potential energy of the pair of charges when the second charge is at point b?
four identical metallic objects carry the following charges 1.29 6.21 -4.54 and -9.14c. the objects are brought
Write a basic physics essay about either, energy, temperature, or specific heat. Define work and energy; kinetic energy, gravitational potential energy.
The power (in watts) dissipated by a resistor is given by P = IV. The resistors used in this experiment are 1 watt resistances i.e. they are capable of dissipating a maximum of 1 watt without overheating. What is the maximum voltage that can be put ..
The charging circuit for the flash system of a camera uses a 130 muF capacitor that is charged from a 250V power supply. What is the most resistance that can be in series with the capacitor if the capacitor is to charge to at least 86% of its final..
Calculate : a) the pressure at this depth b) the change in volume of the sphere do to the pressure GIVEN : density of copper = 8.9*10^3 kg/m^3 youngs modulus = 11*10^10 N/m^2
two narrow slits 0.328 mm apart are illuminated by light of wavelength 600. nm. the light falls on a screen 1.58 m
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
Assuming that a light bulb acts as a point source emitting the light isotropically at 100W. What is the root-mean-square value of the electric field at distance d=20m from the bulb
n object weighs 9.21 N when it is in air and 7.29 N when it isimmersed in water. What is the specific gravity of the object
The human ear canal is about 3 centimeter long. If it is regarded as a tube open at one end and closed at the eardrum, evaluate the fundamental frequency
A playground merry-go-round (uniform disk with mass M=150kg and radius R=2m) rotates on a frictionless axle through its center. What is the kinetic energy of the child-merry-go-round-system
A rod 10.0 cm long is uniformly charged and has a total charge of -21.0 µC. Determine the magnitude and direction of the electric field
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