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Problem- An engineer needs a resistor with a zero overall temperature coefficient of resistance at 20o C. She designs a pair of circular cylinders, one of the carbon and one of Nichrome. The device must have an overall resistance of R1 + R2 = 10.0 Ω Independent of temperature and a uniform radius of r = 1.50 mm. Ignore thermal expansion of the cylinders and assume both are always at the same temperature. Part 1- Can she meet the design goal with this method? Part 2- If so; state what you can determine about the lengths of each segment. If not, explain.
You want help to evaluate the answer of the above problem.
Assume 3 mol of neon (an ideal monatomic gas) at STP is compressed slowly and isothermally to 0.25 the original volume. The gas is then allowed to expand quickly and adiabatically back to its original volume.
What linear speed must a 4.5×10?2 hula hoop have if its total kinetic energy is to be 0.15 ? Assume the hoop rolls on the ground without slipping.
Sound is generated from standing waves in two tubes which are both open at both ends and are identical, apart from one tube having length L and the other tube being only seven eighths as long. If the speed of sound is v, what is the expression for th..
An object with a mass of 10 kg is resting on a wedge that is 32 degrees from horizontal. What is the normal force exerted on the mass from the wedge
A heavy ball and a light ball are dropped in the absence of air resistance. The lighter ball will experience a greater acceleration. The two balls will experience the same acceleration. The heavier ball will experience a greater acceleration.
q1. as a new mechanical engineer for engines inc. you have been assigned to design brass pistons to slide inside steel
the average relative intensity of a persons voice is 58 db. a microphone and amplification system increases the
the suns rays are focused using a lens as a burning glass. all the visible sunlight entering a lens of radius 2.97 cm
A 300-g mass at the end of an ideal spring vibrates up and down in such a way that it is 2.0 cm above the tabletop at its lowest point and 16 cm above at its highest point. find the speed and acceleration of the mass when it is 12 cm above the tabl..
A diffraction grating has a spacing of 350 lines per mm and sits L = 47.7 cm from a screen. what is the wavelength of the laser
Apollo 14 astronaut Alan B. Shepard Jr. used an improvised six-iron to strike two golf balls while on the Fra Mauro region of the moon's surface, What is the numeric value of the ratio
calculate the final pressure of a sample of water vapour that expands reversibly and adiabatically from 87.3 Torr and 500 cm^3 to a final volume of 3.0dm^3.Take gamma=1.3
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