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Q. Charge of -3.30 nC and a charge of -6.25 nC are separated by a distance of 40.0 cm. Find the position at which a third charge of +7.60 nC can be placed so that the net electrostatic force on it is zero.
Q. If the charge of the point charge in the figure were -4Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change?
Would the direction of the force change?a)The force would be in the opposite direction.b)The direction of the force would stay the same.
What approximations or simplifying assumptions must you make in the calculations? (Note: Some of these choices are false because they are wrong physics!)
A 5,000 kg satellite is orbiting the Earth in a circular path. The height of the satellite above the surface of the Earth is 800km. The velocity of the satellite is (Me = 5.98 x 10^24 kg, Re = 6.37 x 10^6 m, G = 6.67 x 10-11 N • m2/kg2)
A mass of 1.61kg stretches a vertical spring 0.31m. If the spring is stretched an additional 0.132m and released, how long does it take to reach (new) equilibrium position again.
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..
What was the speed of the car when the brakes were applied.
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
In brief explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to describe both the changes occurring in the Sun's core and the changes visible from outside the Sun. What do we mean by the stages we call hydrog..
If the partial pressure of water vapor is 47 mm Hg in the lungs at 760 mm Hg pressure, what percentage of air does the water vapor constitute?
What effect will increase in temperature from 25 degree Celsius to 32 degree Celsius of the metal metre stick have on the measurement of the dimension of rectangular block? Why are corrections not generally essential for this effect.
In a die-casting operation 0.1 kg charges of molten zinc alloy at 410 degrees C are injected at a rate of 120 charges per hour. Calculate the average die temperature after a die-casting operation
An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell.
A 40.0 cm diameter cylinder of helium gas is 70.0 cm long and at 30.0 ^circC. The pressure gauge reads 140 psi. How many helium atoms are in the cylinder.
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