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A childs balloon is rubbed on her hair to charge it and then is placed in contact with a neutral ceiling. The ballloon does not fall but remains in contact with her cieling. Explain how the charged balloon is attracted electrostatically to the neutral ceiling.
estimate the average power output on the way up. A speedboat moving at 39 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.15m/s2 by reducing the throttle.
The electromagnetic wave used in a microwave oven have a wavelength of about 12.222 cm. What is the frequency of the radiation
An RC circuit consisting of a 150 μF capacitor and a 1 MΩ resistor is connected to a 100-V battery for a long time, and then the battery is shorted. After 30 s, a second identical resistor is placed in parallel with the original. What is the volta..
A point charge with a charge q1 = 3.60 µC is held stationary at the origin. How much work is done by the electric force on q2
Fromt= 0 tot= 4.39 min, a man stands still, and fromt= 4.39 mintot= 8.78 min, he walks briskly in a straight line at a constant speed of2.01 m/s. What are(a)his average velocityvavgand(b)his average accelerationaavgin the time interval 1.00 min to5.3..
A fox fleeing from a hunter encounters a 0.690 m tall fence and attempts to jump it. By how much does the fox clear the fence
Suggest three reasons WITH explanations that could lead to such a result?
Two charged objects experience a mutual repulsive force of N. If the charge of one of the objects is reduced by a factor of and the distance separating the objects is increased by a factor of , what is the new force?
An automobile club plans to race a 780 kg car at the local racetrack. The car needs to be able to travel around several 170 m radius curves at 85 km/h. What must the banking angle of the curves be so that the force of the pavement on the tires of the..
A long wire has a charge per unit length of 2.80. Find what is the voltage a perpendicular distance of 12.90 centimeter away
a proton is released from rest at the positive plate of a parallel plate capacitor. it crosses the capacitor and
An electron that has velocity v = (2.0 x 106 m/s)i +(3.0 x 106 m/s) j moves through the uniform magneticfield B = (0.30 T)i - (0.15 T)j. Find the force on the electron
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