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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 solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an inclined plane of height 6.7 m. What is the angular velocity of the sphere
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300K and an initial volume of 80.0 L to a final volume of 150.0 L
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.3e14 kg · m/s. Find the relativistic momentum of the spacecraft
The slope of a line connecting two points on a velocity versus time graph gives A) instantaneous velocity. B) average velocity. C) instantaneous acceleration. D) average acceleration. I know that its acceleration.. so C or D. Dont know the difference..
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip.
A proton moves eastward in the plane of Earth's 5x10^-5 T magnetic equator so that its distance from the ground is constant
As an electron in a cold hydrogen atom "flips" to align its magnetic moment with the B-field that surrounds its proton, Calculate the frequency and energy of this photon
An ideal gas consists of n moles of diatomic molecules that rotate but do not oscillate. What is the change in the mean free path of the molecules
A wall is composed of two materials, material 1 has a thickness of 3.68 cm and a thermal conductivity of 0.1 J/msCo while material two has a thickness of 6.02 cm, what is the energy loss per second to the nearest watt
A 1.5 kg ball is thrown straight up with aninitial speed of 12m/s. What will be the potential energy of the ball when it reaches its max. height
q1. two wires each 28.15 cm long are connected to two separate 9.00 v batteries as shown in the figure. the resistance
A spring with a constant of 32 N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. What is the amount of potential energy stored in the spring when it is compressed
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