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If two equal charges are separated by a certain distance, the force of repulsion is F. Given F1, if each charge in F1 is doubled and the distance is cut in half, what is the new value of the force of repulsion, F2? Express your answer in terms of F1.
A child leaves her book bag on a slide. The bag, which is at the top of the slide, starts from rest and reaches the bottom in 1.40 s. What is the friction force acting on the bag
A parallel-plate capacitor is made by placing polyethylene ( =2.3) between two sheets of aluminum foil. The area of eachsheet of aluminum foil is 410 cm2, and the thickness ofthe polyethylene is 0.5 mm.
Why is the spectrum from a black body source continuous while a spectrum for a gas discharge source of the same apparent color temperature has sharp peaks? How is the energy distributed in each of these sources?
an electron moves along the z-axis with vz 4.4 x 107 ms. as it passes the origin what are the strength and direction
The specific heat of a certain 50 g metallic block is 900 J/kg K. If the block is at an initial temperature of 80 degrees Celsius, and dropped into a 50 g bucket of water at 1 degree Celsius, Find the final temperature of the system
Two children are playing a game. The rst throws a basketball straight up, and the second tries to hit it with a thrown baseball. What is the angular impulse on the basketball
Consider two parallel wires placed 0.0430 m apart. One wire carries a current of 6.16 A and the other wire carries a current of 7.88 A. Find the force per length
The acceleration of gravity on Mars is 37 m/s2. If anastronaut can jump upward 20cm on the earth's surface, how high could he jump on the surface of Mars
A particular Bohr orbit in a hydrogen atom has a total energy of -0.54eV. What is the electric potential energy of the system
A 2.354 kg block is on a horizontal surface with ?k = 0.170, and is in contact with a lightweight spring with a spring constant of 526 N/m which is compressed. What is the velocity of the mass as it breaks contact with the spring
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. what is the new acceleration of the box
wile e. coyote carnivorus hungribilus is chasing the roadrunner speedibus cantcatchmi yet again. while running down the
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