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How much work is needed to turn an electric dipole 180 o in a uniform electric field of magnitude 41.6 N/C if p = 2.66 × 10-25 C·m and the initial angle is 31.1o.
An 800 kHz radio signal is detected at a point 3.1 km distant from a transmitter tower. the electric field amplitude of the signal at that point is 210 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves..
A child is walking toward a wall at a speed of 1.00m/s in a direction at right angles to the wall. what is the frequency of the whistle
A small coin is placed on a flat, horizontal turntable. The turntable is observed to make three revolutions in 3.14s. What is the speed of the coin when it rides withoutslipping at a distance of 5.0 cm from the center of theturntable
A 3.8-cm-diameter circle lies in the xy-plane in a region where the electric field is E=(1600i + 1600j + 1600k) N/C. What is the electric flux through the circle
A 1000 kg flat railroad car is rolling to the right at 4.5 m/s. A 60 kg man, is standing on the right end of the cart watching the track in front of the car. What is the final speed of the train car with the mud stuck to it
A hotel elevator ascends 160 with a maximum speed of 4.6 . Its acceleration and deceleration both have a magnitude of 1.1. How long does it take to make the complete trip from bottom to top
A 21 g bullet travelling at 255 m/s is fired into a 0.452 kg wooden block anchored to a 100 N/m spring. How far is spring compressed to the nearest thousandth of a meter.
A metal ball with a mass of 3.71·10-6 kg and a charge of +5.77 mC has a kinetic energy of 4.99·108 J. It is traveling directly at an infinite plane of charge with a charge distribution of +3.21 C/m2. If it is currently 1.87 m away from the plane of c..
A river flows at a speed of 12m/s from north to south. A powerboat can move at a constant maximum speed of 23 m/s in still water. find the maximum velocity of the boat traveling upstream
Design a response cost procedure for a 13 year old boy with a history of lying. Explain what makes response cost a negative punishment procedure.
Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.
Moving a charge from point A, where the potential is 380V, to point B, where the potential is 190 V, takes 4.1×10-4 J of work. What is the value of the charge
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