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If the length of a wire is doubled and radius is halved, how would the new value of resistivity (ρ) of this wire compare with the initial value?
A: 1/8 * the initial value
Why does a ring launcher launch a ring higher when the ring is dipped in liquid nitrogen?
A: because the resistance decreases
Are my answers correct? If not can you please correct them? If the length of a...
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QUESTION 3 A rod, of length L and square cross section of side a, has a resistance R. What is the new value of the resistance R' if the length is doubled (2L) and the cross section side is halved (a/2)? a R' R 4 R'=R R' = 2R R R' QUESTION 3 A rod, of length L and square cross section of side a, has a resistance R. What is the new...
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D FG Problem 6. A length of wire is cut in half and two length are wrapped together side by side to make a thicker wire. How does the resistance of this new combination compare to the resistance of the origin wire?
You are working at a company that manufactures electrical wire. Gold is the most ductile of all metals: it can be stretched into incredibly long, thin wires. The company has developed a new technique that will stretch 1.00 g of gold into a wire of length L= 2.40 km and uniform diameter. a) What is 1 gm in kg, and what is the volume of 1 gm of gold? The mass density of gold ρ= 1.93 x 10^4 kg/m3. Watch...
PLEASE whoever answers my question, make sure you are CONFIDENT your answer will be correct. I need ALL my questions Chegg is not cheap. Also please explain in great detail step by step I need comprehension in the physical aspects A jeweler uses a draw plate to stretch a wire to 8 times its original length. By what factor does its resistance increase?
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c. When a spherical object of radius r moves at velocity v in a viscous liquid, the object experi- ences a drag force given by Stokes' Law (Fd = 6πrv. η). Given the apparent weight of the object above, under what condition would the object be falling at "terminal velocity"? State the equation for this...
Please answer these 2 questions. I have solved them and my answers were not correct. Please don't write down the answers I have written in bold font because they are not correct. I just included the wrong answers I came up so you can make sure your answers don't match to those. Thank you in advance! 1. A company buys a machine for $12,000, which it agrees to pay for in five equal annual payments, beginning one year after the...
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5. [-/1.42 points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as large as 20.0 A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire could rise to a high temperature and cause a fire. (Table of resistivities) (a) Calculate the rate at...
there are two answers posted for this question. can you confirm which one is the correct one and why? ---------------------- question: You are considering a new product launch. The project will cost $950,000 and have a four-year life with no salvage value. Assets for the project are depreciated straight line down to zero. Projected sales are 220 units per year. The price per unit is $18,400 while variable cost per unit is $14,900. Fixed costs per year are $320,000. The...
Please answer all my questions correct
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Please answer all my questions correct
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Please answer all my questions correct
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Please answer all my questions correct
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A second rock is thrown straight upward with a speed 6.000 m/s, If this rock takes 1.828 s to fall to the ground, from what height H was it released? Express your answer in meters to three significant figures A rock thrown with speed 12.0 m/s and launch angle 30.0 (above the horizontal) travels a horizontal...
I’m trying to check my answers to see if I have the correct
answers. Can you help me with the following questions? Thank
you.
29. What is the issue of the following argument? There will be a terrible storm tonight because I heard them say so on the radio and also because i just have a gut feeling that a terrible storm is coming. (5 points) 30. Is the following argument valid? If today is Monday there is a test....