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Two point charges lie on the x axis. A charge of 6.2uC is at the origin, and a charge of -9.4uC is at x=10.0cm. What is the net electric field at
(a) x= -4.0cm and at
(b) x=+4.0cm?
Suppose that after a centrifuge in a medical laboratory is turned off, it continues to rotate with a constant angular deceleration for 10.40 s before coming to rest. How numerous revolutions did the centrifuge complete after being turned off.
What is the tension in the rope connecting the two boxes? What is the tension in the rope connecting the first box to the ramp?
What should the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 670N.
The bonds pays interest semiannually on June 30 and December 31. The bonds are issued to yield 5%. Illustrate what are the proceeds from the bond issue?
In the lungs there are tiny sacs of air that are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140mm. What is the minimum improbability in the velocity of this oxygen ..
How numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k boost in temperature?
A 238 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 32.5 cm.compute the gravitational potential energy at A relative to B.
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
Calculate g for space shuttle territory. A 7.0×10-2-{rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with the constant speed of 1.30 m/s in a horizontal circle of radius 0.47 m.
A spherical balloon has a radius of 12.5 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1200 kg? avoid the bouyant force on the cargo volume itself.
what is the maximum head-start distance the speeder can have? Measure time from the moment the police car starts.
A certain atom of has 89 protons. Assume that the nucleus is a sphere with radius 7.25 fm and with the charge of the protons uniformly spread through the sphere. At the nucleus surface what is the magnitude of the electric field produced by the pr..
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