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Problem: The diameter of a specific copper wire is 8.364 mm, and has a resistivity of 1.72 × 10-8 ??m.
Question: Find the resistance of a 1.2 km length of such wire used for power transmission in ?.
A highway is to be built between tow towns, one of which lies 30.7 km south and 72.2 km west of the othe, What is the shortest lenght of highway that can be bult between the tow towns
You have a 1.99-m-long stretched string with a mass of 19.5 g. When you oscillate the string at 440 Hz, Calculate the tension in the string
Dizziness. Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness, What is the radical acceleration (in m/s^2) of the endolymph fluid
A car is traveling around a horizontal circular track with radius r = 240 m at a constant speed v = 17 m/s, What is the y component of the car's acceleration when it is at point B
A man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t..
How much force must the elbow exert?What is the horizontal distance between the elbow and the point where the weight of the forearm acts?
The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 ? 10-4 J, what is the magnitude of the potential difference between a and b
A force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector.
Assume that a binary star system consists of two stars of equal mass. They are observed to be separated by 310 million kilometres and take 4.0 Earth years to orbit about the point midway between them.
A point charge is moved in an electric field. The potential changes from -87 V to +30 V between the initial and final position. The work done by the electric field is 156 J
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
An object is held up by two ropes. rope 1 makes an angle of 65 degrees above horizontal and the tension in it is T1 = 26N. rope 2 makes an angle of 32 degrees above horizontal and the object is in equilibrium. what is the tension in rope 2 (T2) an..
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