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A string %uFB01xed %uFB01xed at both ends is 1 m long. It resonates in its second harmonic at a frequency of 55 Hz.
What is the speed of transverse waves on the string? Answer in units of m/s
A high-voltage transmission line with the resistance of 0.30 /km carries a current of 950 A. The line is at a potential of 710 kV at the power station and carries the current to a city located 161 km from the station.
Two cylindrical bars, each with diameter of 2.50 cm, are welded together end-to-end. One of the original bars is copper and is 0.360 m long, What is the resistance between the ends of the welded bar at 20 oC
A stainless-steel orthodontic wire is applied to a tooth that is out of line by 40 degrees. find the magnitude of the force on the tooth
How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.41 105 N/C at a point 8.60 cm from the center of the sphere
A coffee filter of mass 1.2 grams dropped from a height of 3 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did air molecules gain from the falling coffee filter.
A proton is released from rest in a uniform electric field of magnitude 1.08^5 N/C. Find the speed of the proton after it has traveled
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the combination.
A gurney is pushed across a level rug when the attendant lets go and the gurney rolls to a stop with an acceleration 1.4 m/s/s. find the mass of the gurney
Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 9.97 cubic meter of water in kg
Find tension in the back muscle and the compressional force
A hole of radius r has been drilled in a flat, circular plate of radius R. Find the moment of inertia for rotation about an axis through the centre of the plate
A tungsten wire has a radius of 0.089 mm and is heated from 20.0 to 1362 oC, When 100 V is applied across the ends of the hot wire, a current of 1.8 A is produced
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