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Two equally charged insulating balls each weigh 0.40 g and hang from a common point by identical threads 45 cm long. The balls repel each other so that the separation between their centers is 6.6 cm. What is the magnitude of the charge on each ball?
so hydrogen atoms have a thermal velocity of about 1000 m/s. How does the energy stored in the magnetic field compare with the kinetic energy in a given volume of space.
In a rectangular corrdinate system, a postitve point charge q = 6.00nC is placed at the point x = +.150 m, y = 0, and an identical point charge is placed at x = -.150 m, y = 0.
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is flying? Assume that the required force is provided entir..
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
A plane first moves from the origin to point A located at 170 km in direction of 30 degree north of east after that it flies 150 km 20 degree west of north to point B finally it flies 195 km due west to point C. find the location of C from origin.
Three beads are placed along a thin rod. The first bead has a mass m1=28g placed at a distance d1= 0.7 cm from the left of the rod. Calculate the numeric value of location of the center of mass relative to the middle bead in cm
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
administrative expenses are avoidable if product R97C is discontinued. Illustrate what would be the effect on the company's overall net operating income if product R97C were dropped?
A spaceship moving away from the Earth at a velocity v1 = .75c with respect tot he Earth, What is the velocity of the rocket with respect to the Earth
If the mass of the child and sled is 40 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.
Three resistors, 23, 45, and 73 ?, are connected in series, and a 0.55-A current passes through them. (a) What is the equivalent resistance? (b) What is the potential difference across the three resistors?
Police investigators, examining the scene of an accident involving two cars, measure 72 -long skid marks of one of the cars, Estimate the initial speed of the car assuming a level road
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