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A. What is the total negative charge, in coulombs, of all the electrons in a small 1.05 gram sphere of carbon? One mole of carbon is 12 grams, and each atom contains 6 protons and 6 electrons?
B. Suppose you could take out all the electrons and hold them in one hand, while in the other hand you hold what is left of the original sphere. If you hold your hands 1.75 m apart at arms length, what force will each of them feel?
C. Will it be attractive or repulsive?
You shoot an arrow into the air. Two seconds later arrow has gone straight upward to a height of 30 meters above its launch point. a) What was the arrow's initial speed? b) How long did it take for the arrow to first reach a height of 15 meters ab..
A flight controller determines that an airplane is 30.0mi south of him, Half an hour later the same plane is 30.0mi north west of him, What is the magnitude of its velocity during this time
a 25-N block slides down a plane inclined at 21.2 degrees to the horizontal with constant velocity. find the total force resisting the motion of the block
Plane monochromatic waves with wavelength 520 nm are incident normally on a plane transmission grating having 350 slits/mm
A 1.2 kg toy car traveling at 2.0 m/s to the right collides and sticks to a 2.0 kg toy car traveling at 1.6 m/s to the left. What fraction of the total initial kinetic energy was lost in the collision
A ball rolls down a hill 100 m. The hill is inclined 60 degrees. what is the final rotational speed of the ball
Standard mathematical constants and symbols (e.g. pi), you may only use the symbols shown in the figure and question description - Which of the following plots correctly represents the electric field intensit
Consider a ring of radius R with the total charge Q spread uniformly over its perimeter. What is the potential difference between the point at the center of the ring and a point on its axis a distance 2R from the center
Steel train rails are laid in 12.6m -long segments placed end to end. The rails are laid on a winter day when their temperature is -2.00C, How much space must be left between adjacent rails
the mean fee path of air molecules at 0 C and 1 ATM is about 2*10^-5 cm. what is the effective molecular diameter of an air molecule
On a workday the average decibel level of a busy street is 84 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
A 120 kg hiker puts on a pair of snowshoes that have an effective combined surface area of 0.80 square meters. How much pressure does he exert on the snow
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