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An electron (mass of 9.110 × 10-31kg and charge of -1.602 × 10-19C) is released at rest above the surface of the earth (where g = 9.81 m/s2). A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the gravitational force. What is the distance between the two?
A 1.82 kg solid sphere (radius = 0.140 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is its rotational kinetic energy
A home-run baseball is hit with an initial speed vo=37.0 m/s at an initial angle qo=53.1o. Find the time when the ball reaches the highest point of its flight, and find its height at this point
A particular atomic energy state is characterized by a principle quantum number n = 4. How many orbital subshells are possible
when a 100ohm resistor is connected to a battery of emf e and internal resistance of r the battery delivers a power of
an elastic collision between two bodies in which the collision is not head-on. Projectile particle m1 is an alpha particle and target m2 is an oxygen nucleus. Find the initial speed of the alpha particle
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.555m from the axis of rotation of the stool. Compute the kinetic energy of the system before the dumbbells are pulled in
Some bacteria are propelled by biological motors that spin hair-like flagella. How long does it take the motor to make one revolution
It takes only 9.12N of force to hold up a 1KG metal crown in water, Compute the specific gravity of this metal, and guess what element it might be using a density table
Two charged dust particles exert a force of 8.5 x10-2 N on each other. What will be the force if they are moved so they are only one-seventh as far apart.
an initially uncharged hollow metallic sphere with radius of 5 cm has a small object with a charge of 10 microc
A gratign spectrometer while in a vaccum on Earth sends 500nm light off at angle 20.0 degrees in first order spectrum, find the index of refration of the mongoian atmosphere
The force of gravity acting on the arm acts through point A. Identify the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown.
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