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Calculate the de Broglie wavelength ? of an electron with energy EF in sodium, and compare the value with the atomic separation R in sodium.
A 24.00 kg child is on a swing that hangs from 1.6-m long chains. What is her highest speed if she swings out to a 45° angle.
A playground swing at its highest point during a child's play is 3.0 meters above the ground, Determine the torque exerted by gravity on a child on the swing when the swing is at the highest point of its motion
Find the magnitude of total displacement of the object
A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.
A child in a boat throws a 5.15-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest
calculate the force of gravity between the earth and the moon. moons mass=7.4x10^22 kg ; average earth moon distance =3.8x10^8 m. Express your answer to two significant figures and include appropriate units. F=G((m1m2)/d^2)
An object with mass 3.0kg is executing simple harmonic motion, attached to a spring with spring constant 320N/m, Calculate the maximum speed attained by the object
Find the ranges of this light's frequency. min? max? in Hz, Find the ranges of this light's wave number. min? max? in rad/m
Draw a free body diagram for the block, carefully labeling all forces acting on the block. What is the mass density of the liquid? What will each scale read if block A is pulled up our of the liquid.
A parallel-plate capacitor is charged to an electric potential of 337 V by moving 3.88E+16 electrons from one plate to the other
Two bicyclists begin to travel clockwise on a circular path of diameter D = 150.00 m with the constant speeds vA = 11.00 m/s and vB = 8.00 m/s, What is the total distance travelled by the pigeon
A hollow spherical shell has mass 7.95kg and radius 0.225m, What is the kinetic energy of the shell after it has turned through 6.75rev
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