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Question1
At what distance from a proton is the magnitude of its electric field 2.3×105? What is magnitude of the electric field at a point 0.65 away from a point charge of +7.0? Two depressing point charges are separated by 9.00and feel a mutual repulsive force of 1.75.
The charge of one is three times that of the other.
A) How much charge does each have?
B) What would be the force if the total charge were instead regularly distributed on both point charges?
Question2
The fact that galaxies beyond away are moving away from us the fastest is taken as facts that-
a. we are at center of the universe
b. most distant galaxies have a blue shift
c. those galaxies got farther from us as they were moving faster
d. universe is expanding
The 2.00 kg object below is released from rest at the height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a spring of force constant k = 450 N/m. The object slides down the ramp and into the spring, compressing it a distance x b..
A small ball of mass, m = 8.60 × 10-9 g, has acquired an excess charge. The ball is then placed between two parallel plates spaced x = 3.45 mm, How many electrons did the ball gain or lose
A length of aluminum wire has a resistance of 14.0 ? at 22.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, Neglecting thermal expansion, find the temperature of the oven
At a county fair, two children ram each other head-on while riding on the bumper cars. Jill and her car, traveling left at 3.20m/s, determine the speed of Jill and her car after the collision
A ball thrown straight upward returns to its original level in 2.40. What is the initial speed of the second ball if it also returns to its original level in 2.40
question1hold switch closed. place a magnetic field sensor between the turns of the slinky by its center. rotate the
A proton and electron are far away from each other, how quick would the electron be going in the orbit if we assume centripetal motion?Therefore, what is the electrnss kinetic energy
A 0.565-kg ball has an elastic, head-on collision with a second ball that is initially at rest. What is the mass of the second ball
The figure shows two 22.7 kg ice luges that are at rest and placed a short distance apart, one directly behind the other. What are the final speeds of the first luge
A microscope has an eyepiece of focal length 2.00 cm and an objective of focal length 3.00 cm. How far from the eyepiece is the image formed by the objective
An object is placed 40 cm from a concave mirror of radius 20 cm. Trace the image, show and find the location and characterize the image fully
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 What is the magnitude of the net force acting on the soccer ball at this instant
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