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A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi.
A. How many helium atoms are in the cylinder? atoms
B. What is the mass of the helium? kg
C. What is the helium number density? atoms/m^3
D. What is the helium mass density? kg/m^3
Three charges, +2.5 ?C, -4.8 ?C, and -6.3 ?C are located at (-0.20 m, 0.15 m), (0.50 m, -0.35 m), and (-0.42 m, -0.32 m), respectively
His arm is 70 cm long and has a mass of 4.0 kg. Evaluate the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
Two metal conductors that are separated by a distance of 0.89 mm. When an electric spark jumps between them, What is the magnitude of the potential difference
A 1.4 kg object at x = 2.00 m, y = 3.10 m moves at an angle 45° north of east. Compute the magnitude of the object's angular momentum about the origin.
Calculate the induced emf in the conductor and if the total resistance in the conductor is R what is the magnitude of the induced current.
A pipe open only at one end has a fundamental frequency of 282Hz. A second pipe, initially identical to first pipe, is shortened by cutting off a portion of the open end.
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 5900 V/m, Calculate the radius r of the path for a singly charged ion
A bicycle racer is traveling at 10 m/s with an acceleration of 0.5 m/s^2. The radius of the bicycle wheel is 33 cm. What is the angular velocity of the bicycle wheels
A uniform plank of length 5.9 m and weight 212 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person who weighs 443 N walk on overhanging part of the plank before it just begins ..
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
A small monkey is traveling along a branch, What is the max speed of the monkey during this interval? Show all calculations
A particle travels 16 times around a 18-cm radius circle in 37 seconds. What is the average SPEED (in m/s) of the particle
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