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An electron is initially at rest. It is accelerated through a potential difference of 400 V. What is the kinetic energy of this electron?
Provide equations allowing to find moment of inertia of a solid cylinder and of a cylindrical ring
The tube of a mercury thermometer has an inside diameter of 0.142 mm. The bulb has a volume of 0.242 cm^3. How far will the thread of mercury move when the temperature changes from 12.1 degrees C to 30.9degrees C
Two particles of equal but unknown charge are held 45 cm apart. If their electrostatic repulsion is 2.2 X 10^5 Newtons, what is the magnitude of their charge
A 50 g ball is fired horizontally with initial speed v_0 toward a 110g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110g ball swings out to a maximum angle the..
q1. a pipe open only at one end has a fundamental frequency of 241 hz. a second pipe initially identical to the first
In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65.00 kg. What is the average power provided by the tension in the cable pulling the lift.
the maxium compresional stress that a bone can with stand is 1.6 * 10^8 N/m^2 before it breaks.What is the maxium compresional force that can be applied to the femur bone
The bowling ball has a diameter of 20.6 {rm cm}, and the angle the stick makes with the horizontal is 30.0 {rm ^circ}. You may suppose there is no friction between the stick and the bowling ball, though friction with the floor must be taken into acco..
An object-spring system oscillates with amplitude of 3.00cm. If the spring constant is 205 N/m and object has a mass of 0.50 kg, determine each of the following values.
An advertisement for a certain portable vacuum cleaner shows off its power with a photograph of the vacuum-cleaner wand suspending a bowling ball by the strength of its suction. find the weight of the heaviest ball the vacuum cleaner can lift
A cylinder 25 cm long is partly filed with water. A loudspeaker held over the cylinder causes the air column to resonate, what is the hight of the water in the cylinder
a 3.7 kg box of running shoes slides on a horizontal frictionless table and collides with a 2.4 kg box of ballet slippers initially at rest on the edge of the table, at height h = 0.33 m. what is their kinetic energy just before they strike the flo..
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