Can you send me the right answer? QUESTION 3 A rod, of length L and square...
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 (21) and the cross section side is halved (a/2)? OR'-2R OR 4 R' = R 2 RER
A rod, in the form of a cylinder of length L and circular cross-section of radius r, has a resistance R. What is the new value of the resistance R if the length is doubled (2L) and the radius is doubled (2r)?
Show all work and explain how you get the correct answer highlighted below: A rod of length L and square cross-section with side length a conducts heat between two machine parts. In order to modify the machine but maintain the same rate of heat conduction, you replace the rod with a new one of the same material that has a square cross-section with side length 3a/2. What is the new rod's length? A. 3L/2 B. 9L/4 C. 2L/3 D. 4L/9
One copper wire has a cross sectional area of A and resistance R and length L. A second copper wire has a length L and cross-sectional area 2A. What is the resistance of the second wire in terms of R? R/2 R 2R 4R Some other value
A wire of length L and radius r has a resistance R. If the length and radius of this wire are doubled, the new resistance: remains the same. doubles. quadrables. drops to 1/2 its original value. drops to 1/4 its original value.
A wire has resistivity p, its LENGTH I DOUBLED and its AREA OF CROSS SECTION IS HALVED. What will be the new value of resistivity of the wire? A 1 ON 21 Select one: O a. p/2 ob.p C. 4p O d. 2p
Using a long rod that has length , you are going to lay out a square plot in which the length of each 2. side is . Thus the area of the plot will be However, you do not know the value of , so you decide to make n independent measurements X1;X2; :::;Xn of the length. Assume that each Xi has mean 2. (unbiased measurements) and variance o^2. Question C only, Now if I estimate u using both X1...
4. The resistivity of iron at 20°Cis 100n2m, while that of copper is 17.7n2m. You are building the following two conductors, each of length L-m and of square cross-section with the side a -lcm: 1) By joining a 50cm piece of iron and a piece of copper of the same length and same cross section end-to-end; 2) By joining two lm-long pieces of copper and iron side-by-side such that the total cross section of this new conductor is a square...
can anyone help me with #3, especially c) thank you 3. Using a long rod that has length, you are going to lay out a square plot in which the length of each side is . Thus the area of the plot will be. However, you do not know the value of , so you decide to make n independent measurements X1, X2, ..., X, of the length. Assume that each Xhas mean (unbiased measurements) and variance o?. a) Is...
3) A U-shaped rod has vertical sides of length L and a horizontal base of length 2L as shown below. The vertical sides each have a charge per unit length of +A while the base has a charge per unit length of -. Choose a cartesian coordinate system with its origin at the center of the base and with the x- and y- axes horizontal and vertical, respectively a. Solve for the approximate electric potential at the point (0,y) where...