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Q. Two particles are fixed on x-axis. Particle 1 of charge q1 = -2×10^-7 C at x = 20 cm and particle 2 of charge q2 = +8×10^-7 C at x = 70 cm. At what x coordinate on the axis is net electric field produced by the particles equal to zero?
Q. An atomic nucleus of mass 238u moving at 730m/s emits an alpha particle of mass 4.0u in the direction of its velocity. If the remaining nucleus slows to 640m/s, what speed does the alpha particle have while it is emitted?
A projectile is launched at some speed at an angle of 74 degrees and travels a range of 262 meters. The launch angle is after that changed, but the projectile is fired at the same speed as the original case and also travels the same range of 272 m..
What greatest height above the break free point does it rise? How high is the break free point above ground.
An electric field of 7.85 10^5 V/m is desired between two parallel plates, each of area 42.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
An explosion breaks an object into two pieces, one of which has 1.80 times the mass of the other. If 10000 J were released in explosion, how much kinetic energy did each piece acquire.
What is the force on the bottom of a 36.0 cm tall cylindrical beaker with a diameter o 6.0 cm with water filled to its brim, answers in N.
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
The potential at location A is 392 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 780 V, and when released from rest from this spot, the particle arrives at B wit..
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
The tape is now wound back into the drum at angular rate. With what speed would the end of the tape move? (Note that our drawing specifies that a positive derivative of implies motion away from the drum. Be careful with your signs. The fact that the ..
A loudspeaker of mass 18.00 {rm kg} is suspended a distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling.
A spaceship is measured to be 120 m long while it is at rest with respect to an observer. If the spaceship now flies past the observer with a speed of .99c, what length would the observer measure of the spaceship.
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
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