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Two point charges 2.0cm apart have an electric potential energy -400?J . The total charge is 25nC
PART A: What is the lesser charge?
PARTB: What is the larger charge?
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
A positive charge of q = 3.5 µC is pulled on by two negative charges. One, -2.0 µC, is 0.050 m to the north and the other, -4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge .
A damped mass-spring system oscillates at 280 Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 8.4 cm and the energy of the oscillating system is then 84 J.
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional enhancement in length is to be the similar as that of the spider's thread.
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
You are traveling on an airplane, The velocity of the plane with respect to the air is 190 m/s due east, What is the speed of the plane with respect to the ground
A 10.00kg box on a smooth, frictionless, horizontal surface experiences a downward force of 30n at an angle of 40 degrees to the horizontal. The box moves 1.50 m to the right. What was the work done by gravity.
A rectangular loop with sides of lengtha=1.10cm andb=4.10cm is placed near a wire that carries a currenti(t)=3.14 + 1.04t2, where the current is in amperes and time is in seconds. The distance from the straight wire to the closest side of the loop..
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V highest potential difference operating at 5000 rad/s .
In a ballistics test, a 25.00 g bullet travelling horizontally at 1300m/s goes through a 20.00 cm thick 450 kg stationary target and emerges with a speed of 800m/s. The target is free to slide on a smooth horizontal surface. How long is the bullet..
Although an ideal voltmeter has an infinite internal resistance, this theoretical ideal is usually not met in practice. The voltmeter has an internal resistance of 8 x 10^9 Ohms and is used to measure the voltage across the resistor R2.
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