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Q1. In a science fiction story, a microscopic black hole is given the enormous positive charge by firing an un-neutralized ion drive exhaust (consisting of positively charged xenon ions) into it for six months. The idea behind the charging process is to be able to confine and manipulate this dangerous object with powerful electric fields. Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V? (-28.02 is a wrong answer.)
Q2. An observer moving toward Earth with a speed of 0.97 notices that it takes 5min for a person to fill her car with gas. Presume, in its place, that the observer had been moving away from Earth with a speed of 0.80c. How much time would the observer have measured for car to be filled in this case?
While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft.
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
Assume that each person is about the similar distance from the center of the field and can generate the same level of sound intensity. How numerous people are at the game.
Compute magnitude and direction of magnetic field produced by the moving belt at a point just above its surface .
What is the horizontal distance x to the base of the wall supporting the mirror of the near point on the floor that can be seen reflected in the mirror . What is the speed of the third fragment? Overlook effects due to gravity.
What is t he steam-side coefficient
What are the components of the ships displacement
Compute the momentum of the bullet
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching police car. After the police car passes, observed frequency of the siren is 455 Hz. Establish the car's speeds from these observations.
What is rms speed of the atoms at temperature
What is mechanical energy
How much work is completed by the system in this process. Determine the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C. How much work is completed by the system in this process.
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