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Three insulating balls are suspended from thin threads. Various objects are then rubbed against other objects and each of the insulating balls is charged by touching them with one of these objects. In each case, be sure to discuss why you chose the answer you did. a. In one set of experiments, it is found that balls 1 and 2 repel each other and that balls 2 and 3 repel each other. From this we can conclude that i. 1 and 3 carry charges of opposite sign ii. 1 and 3 carry charges of the same sign iii. all three balls carry charges of the same sign iv. one of the objects carries no charge v. we need to do more experiments to determine the sign of the charges b. In a second set of experiments, it is found that balls 1 and 2 attract each other and that balls 2 and 3 repel each other. From this we can conclude that i. 1 and 3 carry charges of opposite sign ii. 1 and 3 carry charges of the same sign iii. all three balls carry charges of the same sign iv. one of the objects carries no charge v. we need to do more experiments to determine the sign of the charges.
What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second? A. 1.6 m/s^2 B. 3.0 m/s^2 C. 3.4 m/s^2 D. 5.0 m/s^2
A submarine is 325 m horizontally out from the shore and 115 m beneath the surface of water. A laser beam is sent from the submarine so that it strikes the shore.
In a nebula, the amount of interstellar extinction in the visible wavelength band is 1.1 magnitudes. The thickness of the nebula is estimated to be 16 pc and it is located 458 pc away.
The sunlight reaching the earth has a maximum electric field 810 V/m. compute the maximum magnetic field associated with it.
when a dime (diameter 1.624 cm) is placed straight over it, bubble can be seen by looking down into the cube. What are upper and lower bounds of the range of the possible depths of the air bubble beneath surface.
If the LED emits light from a circle with diameter 10mm and is to couple to the fiber which has a50 micro meter diameter core .assume it radiates with afull cone angle 30 degree.
A boat moves through a river at 7-m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 3.50m/s, how long does it take boat to make a round trip consisting of a 250 m displacement downstream followe..
An AC power generator produces 46 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, and the energy is transmitted through a long-distance power line that has a resistance of 100 . What propotion of the power deliver..
Computing the probability of reflection and transmission of a particle at walls of a barrier.
Assume after charging a 4.80 microF capacitor to 5 V you connect it to the second uncharged capacitor of 15 microF. What voltage will you voltmeter read across the second capacitor after repeating charge sharing process two times? State the answer..
A merchant in Katmandu sells you a solid gold 1 kg statue for a very reasonable price. When you get home, you wonder whether or not you got a bargain, and so you lower the statue into and container of water and measure volume. What volume of displ..
what happens to light of a particular frequency when it is incident upon the material that natural frequency is the same as the frequency of the light.
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