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Q. A point charge 4.20 mu C is held fixed at the origin. A second point charge 1.60 mu C with mass of 2.80×10-4 kg is placed on the x axis, 0.280 {rm m} from the origin. The second point charge is released from rest. What is its speed when its distance from the origin is 0.400 {rm m}.
Q. An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 200 m in diameter, what is the x component of this runner's average velocity between points A and B?
Some air is flowing from a wider tube to narrower. There is a difference in height of the liquid in the two sides of the U-shaped tube. Why is there such a difference in height.
Two speakers, 6.00 m apart, are driven by the same audio oscillator so that each one produces a sound consisting of two distinct frequencies, 1000 Hz and 1360 Hz. The speed of sound in the room is 350 m/s.
What is coefficient of friction between chair and floor
A plane first moves from the origin to point A located at 170 km in direction of 30 degree north of east after that it flies 150 km 20 degree west of north to point B finally it flies 195 km due west to point C. find the location of C from origin.
Two long, straight wires cross each other at right angles, and each carries same current. Which of the following statements are true regarding the total magnetic field at the various points due to the two wires.
How to generate a constant deceleration
If the football has a mass of 0.47kg and the time of contact with the ball is 0.021s, what is the force exerted by the ball on the kicker's foot.
What is average kinetic energy of each helium atom
A 2.80 kg gold bar at 98 degrees celcius is dropped into 0.34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg
Find out the frequency of the fourth harmonic if the string is fixed at one end and free at other. (That is, if the free end is attached to a long string of negligible mass.)
Two people, one of mass 75kg and the other of mass 60kg, sit in a rowboat of mass 80 kg. With the boat initially at rest, two people, who have been sitting at opposite ends of the boat 3.2 m apart from each other, now exchange seats. How far and i..
A rocket rises with constant acceleration to an altitude of 85 km, at which point its speed is 3.1km/s.what is the acceleration in m/s.
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