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A -3.0 nC charge is on the x-axis at x = -10 centimeter and a +4.0 nC charge is on the x-axis at x = 19 centimeter. Find at what point on the y-axis is the electric potential zero?
A 5.8 m diameter merry-go-round is rotating freely with an angular velocity of 0.90 rad/s. What is the angular velocity of the merry-go-round now
A ray of light strikes the a-b interface at 50o angle of incidence. The index of refraction a is na=1.20. Obtain the indices of refraction in these two media
Mount McKinley (also called Denali) is the tallest mountain in North America, with a height of 6,200 m above sea level. how much work is done by gravity on the person
Assume that a person can jump straight up a distance of 61 cm on the surface of the earth. How small would a planet have to be so that the person could jump totally off (i.e. jump up and not come down)? Suppose that Earth's radius is 6380 km and that..
In a common but dangerous prank, a chair is pulled away as a personis moving downward to sit on it, causing the victim to land hard onthe floor. Suppose the victim falls by 0.50 m, the mass that moves downward is 70 kg, and the collision on the fl..
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
consider a spring that does not obey hookes law very faithfully. one end of the spring is fixed. to keep the spring
q1. a system consists of a uniform electric field of 42.6 nc directed in the positive x direction together with a
The total current delivered to a number of devices connected in parallel is the total of the individual currents in each device. Circuit breakers and resettable automatic switches that protect against a dangerously large total current by "opening" to..
A quantity of heat is removed from a hot reservoir at absolute temperature T and then is added to a cold reservoir at absolute temperature T/2. The cold reservoir experiences an entropy increase S. What is the change in the entropy of the universe..
In a certain binary-star system, each star has the a mass of1.00 x 1030 kg, What is their period of revolution in Earth years
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
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