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A student suspends two identical conductive spheres (m = 0.30g) from two equally long nylon threads each 25 cm long. He charges the spheres with equal charge. The suspended spheres move apart from each other a distance of 9.2 cm between their centers. What is the charge on each sphere?
An image of a biological sample is to have a resolution of 5 nm. (i) What is the kinetic energy of a beam of electrons with a de Broglie wavelength of 5.0nm.
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
Displacement d1 is in the yz plane 58.4° from the positive direction of the y axis, has a positive z component of 5.99 m, find the angle between d1 and d2
Helium gas with a volume of 2.55L , under a pressure of 1.26atm and at a temperature of 44.0?C, How many grams of helium are there? The molar mass of helium is 4.00g/mol
A major-league pitcher can throw a baseball in excess of 48.7m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 15 m away from the point of free.
A golf ball is struck off a tee (negligible height and air resistance) with initial velocity of 50 meters per second at an angle of 30 degrees above the horizontal. Illustrate what will be the vertical component of velocity after 2.5 seconds?
A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3?
Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +21.0 km/s to ?17.8 km/s, What is the total change in the asteroid's velocity
A pendulum of length 9.00 m is held out to point A. At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 3m. (That is, 3.0 m is no longer free to swing.) How long does this pendulum take for one o..
Illustrate what are the possible weaknesses in the Kimberely Process? Illustrate what role do you think the three sectors will have in addressing these weaknesses?
A warehouse worker pushes a crate along the floor, by a force of 5.0N that points downward at an angle of 45° below the horizontal. find the horizontal component of the push.
River Pascal with a volume flow rate of 3.3×10^5 joins with River Archimedes, that carries 1.09×106 , to form the Bernoulli River. The Bernoulli River is 120 wide and 20 deep.
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