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A piece of copper tubing used in plumbing has a length of 85.0cm and an inner diameter of 1.40cm at 20 degrees C. When hot water at 90 degrees C flows through the tube, what is the change in its cross-sectional area?
The electron in a hydrogen atom is in a subshell with maximum angular momentum quantum number l=6. What is the number of states in this subshell
A neutral pie-meson is particle that can be created by accelerator beams. If one such particle lives 1.40 x 10^16 s as measured in the laboratory, what is its velocity relative to the laboratory
Two point charges, q1 = 2.0 pC and q2 = -2.0 pC, are separated by 3.8 µm.(a) What is the dipole moment of this pair of charges
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck, What is the speed of the truck when they are abreast, How far was the automobile behind the truck initially
A copper wire has radius r = 0.424 cm, is 6.00 m long, has resistivity ? = 1.72·10-8 ? m, What is the electric field, E, in the wire
A wheel with a tire mounted on it rotates at the constant rate of 2.87 times a second. find the tack's tangential speed
A bolt is to be tightened with a torque of 8.0 Nm. what is the least amount of force you must exert
A 400 g mass is attached to a spring of constant k=16.0 N/m and set into oscillation with amplitude A=25.0 cm, Find the totall mechanical energy E of the oscillator
A subway train has three cars, each weighing 1.20 x 10^5 N. The frictional force on each car is 103 N, and the first car, acting as an engine, exerts a horizontal force of 4.80 x 10^4 N on the rails.
A uniform rod of length 0.940 m and mass 11.0 kg is balanced on a sharp edge at 0.670 m from the left end. Calculate the torque on the center of mass of the rod alone with respect to the pivot point
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
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