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At what frequency would the wavelength of sound in air be equal to the mean free path of oxygen molecules at 1.03 atm pressure and -1.55°C? Take the diameter of an oxygen molecule to be 7.55 × 10-8 cm and the speed of sound to be 348 m/s.
A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 36.9° past the lowest point on its way up, determine the speed and velocity of the ball
five boxes each having weight 100 n are stacked up. the bottom box is the fifths from the top. what is the magnitude of
How are radioactive isotopes produced?
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, Determine the cheetah's average acceleration during the short sprint
The three charges in the figure below are at the vertices of an is osceles triangle. Let q = 1.00 nC and calculate the electric potential at the midpoint of the base.
A small glass bead has been charged to +19 nC. A metal ball bearing 1.0 cm above the bead feels a 0.020 N downward electric force. What is the charge on the ball bearing
What isthe total random kinetic energy of all the molecules in one mole of helium at a temperature of360 K? With what speed would a mole of helium have to move so that the kinetic energy ofthe mass as a whole would be equal to the total random kineti..
A 1.65 kg bowling trophy is held at arm's length, a distance of 0.68 m from the shoulder joint. What is the magnitude of the torque applied by the trophy
q1. a hockey stick is swung with the average angular acceleration of 1.5 rads2. what is the angular velocity of the
A 7.00 \mu F, parallel-plate, air capacitor has a plate separation of 4.50 mm and is charged to a potential difference of 400 V
The drawing shows a hydraulic system used with disc brakes. The force is applied perpendicularly to the brake pedal. find the force applied to each side of the rotating disc
The pressure of sulfur dioxide (SO2) is 2.89 x 104 Pa. Find the translational rms speed of the sulfur dioxide molecules
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