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Four identical charged particles (q = +18.0 µC) are located on the corners of a rectangle as shown in the figure below. The dimensions of the rectangle are W = 14.0 cm and L = 58.0 cm. Compute the change in electric potential energy of the system as the particle at the lower left corner in the figure is brought to this position from infinitely far away. Suppose the other three particles in the figure below remain fixed in position.
A 52.6-kg skateboarder starts out with a speed of 2.16 m/s. He does 89.2 J of work on himself by pushing with his feet against the ground. Calculate the change (PEf - PE0) in the gravitational potential energy
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
A certain nuclear power plant is capable of producing 1.3×109 W of electric power. How much mass is converted per hour if the efficiency of the plant is 29 percent
In the drawing (drawing not needed to solve problem), the magnetic field has a magnitude of 1.92 T, the rod has a length of 0.895 m, find the average power being delivered to the circuit by the hand
Assume the stone is thrown at an angle of 33.0 degree below the horizontal from the same building (h = 43.0 meter) as in the example above. Determine the speed and angle of the velocity vector with respect to the horizontal at impact
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 6.2 mm in diameter. what is the angular spread of the beam
A solenoid of radius 2.3 cm has 450 turns and a length of 24 cm. Find the rate at which current must change through it to produce an emf of 80 mV
A sinusoidal voltage ?v = (60 V) sin (130t) is applied to a series RLC circuit with L = 90 mH, C = 175 ?F, and R = 34 ?. Whats the maximum current in the circuit
The pilot of an aircraft wishes to fly due west in a 47.7 km/h wind blowing toward the south. In what direction should the aircraft head
The head of a rattlesnake can accelerate at 50 m/s^2 in striking a victim. If a car can have the same acceleration, how long would it take for it to reach a speed of 100 km/h from rest.
In the high jump, Fran's kinetic energy is transformed into gravitational potential energy without the aid of a pole. Find with what minimum speed must Fran leave the ground
A thin rod consists of two parts joined together. One-third of it is silver and two-thirds is gold. The temperature decreases by 31.7 C°. Determine the fractional decrease ?L/(LSilver + LGold) in the rod's length, where LSilver and LGold are the init..
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