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Liquid helium has a temperature of only 4.24 K and is in equilibrium with its vapor at atmospheric pressure. Calculate the rms speed of a helium atom in the vapor at this temperature.
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 × 10-25 kg. Determine the radius of the path
an atom with mass m emits a photon of wavelength a.a what is the recoil speed of the atom?b what is the kinetic energy
A hollow cylindrical tube of 2.5 m long is open at one end and closed at the other end. What is the linear distance between a node and the adjacent antinode for the third harmonic in this pipe?
A block with a mass of 10.0 g and a charge of +1.11 x 10-5 C is placed in an electric field with x component Ex = 2.51 x 103 N/C, y component Ey = -528 N/C, find the magnitude of the electrostatic force on the block
A 0.1 kg ball is thrown towards a 0.3 kg rod that is 0.75 m long and hanging vertically from a frictionless hinge at its upper end. If the ball is traveling horizontally at 0.6 m/s just before striking the rod 0.5 m below the hinge and then reboun..
When a 200 N bag of nails hangs motionless from a single vertical strand of rope, how much tension is exerted in the strand? Answer in units of N. How much tension if the bag is supported by 2 vertical strands? That is, how much tension is exerted i..
A ball is projected horizontally from the top of a building.One second later another ball is projected horizontally fromthe same point with the same velocity. What will the time difference be when the balls hit the ground
A moving 3.10 kg block collides with a horizontal spring whose spring constant is 392 N/m. What is the speed of the block when it hits the spring
q1. a spring of force constant k2.5102 nm is suspended form a rigid support. an object o mass 1.00 kg is attached to
If the surface area of a human is 1.7 m^2 and each square inch of skin contains 75 pressure sensors
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
A block of mass 4.25 kg hanging from a light string is struck by a projectile of mass 250 g. The projectile sticks to the mass after collision and the two together rises a vertical distance of 12 cm. What is the velocity of the two-mass system immedi..
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