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A tank of compressed air of volume 1.0 m3 is pressurized to 40.0 atm at T = 273 K. A valve is opened and air is released until the pressure in the tank is 33.0 atm. How many air molecules were released?
In the double-slit experiment, light particle is also called photon. Does the photons go through the slits in the double-slit experiment, How are double-slits related to holograms
A point charge q1 = 15.00 microC is held fixed in space. From a horizontal distance of 8.0cm, a small sphere with mass 4.00*10^-3 kg, What is the acceleration of the sphere at the instant
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ? 10-8, What must be the diameter of the wire
two objects are moving in the xy plane . object a has a mass of 3.5 kb and has a velocity Va of 5.3 m/s at an angle of 30 degrees from the x-axis and object b has a mass of 1.9 kg, What is the total momentum of the system
Given: The speed of sound in air is 343m/s. The length of a hollow pipe is 632 cm. The air column in the pipe is vibrating and has four nodes. Determine the frequency of the sound wave in the hollow pipe.
A 3.0kg block is attached to a string that is wrapped around a 2.0kg , 4.0-cm-diameter hollow cylinder that is free to rotate. Use conservation of energy to find the speed of the block as it hits the ground
A railroad car of mass 2.46 multiply.gif 104 kg, is moving with a speed of 4.13 m/s. What is the speed of the four cars after the collision
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. A touches B, then the two spheres are separated
A hollow, conducting sphere with an outer radius of 0.253m and an inner radius of 0.190m has a uniform surface charge density of +6.64×10?6 C/m^2. What is the electric flux through a spherical surface just inside the inner surface of the sphere
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
a laser of wavelength 1030nm has an initial beam diameter of 1.5 mm and the divergence half-angle of the conical beam
At the top of Earth's atmosphere, sunlight has an average intensity of 1380W/m^2 .If the average distance from Earth to the Sun is 1.5*10^11m, at what rate does the Sun radiate energy?
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