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A tiny drop of dye is put in a very still tub of water. The dye molecules travel about 10^-11 m between collisions and undergo about 10^13 collisions per second. The direction of any step is completely arbitrary; all directions are equally probable. For molecular motion in one direction, calculate the average distance traveled and the standared deviation after:
a) one step
b) one minute
c) one year (3.17x10^7 sweconds)
Two point charges are on the y-axis. A 6.0 µC charge is located at y = 1.35 cm, and a -2.20 µC charge is located at y = -1.00 cm. (a) Find the total electric potential at the origin. (b) Find the total electric potential at the point having coordi..
Water is pumped into the tank until the air pressure reaches 4.0 atm. The temperature is constant. Find out the height of the compressed air.
Yusef pushes a chair of mass = 51.0 across a carpeted floor with a force (the subscript 'p' here is lowercase and throughout the question) of magnitude = 170 directed at = 35.0 below the horizontal. The magnitude of the frictional force between the c..
How to find out potential energy
A woman throws a ball at a vertical wall d = 3.0 m away. The ball is h = 1.5 m above ground when it leaves the woman's hand with an initial velocity of 12 m/s at 45°.
A puck slides along the frictionless track shown in the figure with an initial speed of 7.40. Suppose the puck turns all corners smoothly, with no loss of speed.
A force with a magnitude of 452N is used to bring an object with a mass of 56.0 kg moving at a velocity of 155m/s. How long will it take to bring the object to a full stop.
A positively charged rod is brought close to one end of an uncharged metal rod but does not actually touch it. What type of charge does the end of the metal rod closest to the positively charged rod acquire?
Pale uses straight-line depreciation and useful lives of 40 years and 10 years for the building and equipment, respectively, with no estimated residual values. Give journal entry that Pale recorded when it transferred the assets to Bright.
Two balls of the same mass are accelerated by different net forces such that one ball gains a velocity twice that of the other ball in the process. Is the work done by the net force acting on the faster moving ball twice that done on the slower mo..
suppose the specific heats of milk and coffe are the same as that of water, and neblect the specific heat of the container.
A 0.200 kg block is placed on a vertical spring (k = 5.80x 10^3 N/m) and pushed downward, compressing the spring 0.100 m. As the block is released, it leaves the spring and continues to travel upward. What height above the point of release will bl..
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