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An electron collides elastically with a stationary hydrogen atom.The mass of the hydrogen atom is 1837 times that of the electron.Assume that all motion, before and after the collision, occursalong the same straight line. What is the ratio of the kinetic energy of the hydrogen atom after the collision to that of the electron before the collision?
Find the smallest particle size (density 2.65 grams per cubic cm) that will be removed in a horizontal grit chamber 10 meters long and 1.0 meter deep if the flow rate is 1000 cubic meters per hour. Suppose temperature is 25 ºC.
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
question two insulating spheres have radii r1 and r2 masses m1 and m2 and uniformly distributed charges -q1 and q2.
three forces are applied to a bracket as shown. the directions of the two 30 n forces may vary but the angle between
Find the area under the graph of the polar curve r=(e^theta) for 0
A piece of copper with a mass of 1.0kg and density of 8900kg/m^3 is suspended from a string and conpietely in a contaner with water. determine the volurm of the piece of copper
At what point the electric potential zero. A sphere of mass 1.9 × 10-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 17° with the vertical. Find (a) the magnitude of that push a..
As they go around, they experience a centripetal acceleration of 2.20 . What is the diameter of this particular Ferris wheel
Tammy leaves the office, drives 64km due north, then turns onto a second highway and continues in a direction of 33 degrees north of east for 79 km. What is her total displacement from the office
A child exerts a tangential 47.6 {N} force on the rim of a disk-shaped merry-go-round with a radius of 2.10 {m}. If merry-go-round starts at rest and acquires the angular speed of 0.080 {rev/s} in 3 {s}, what is its mass.
A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.7 , what is the temperature of the filament when the bulb..
A jet plane passes over you at a height of 4990 m and a speed of Mach 1.75. Find the Mach cone angle
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