A brass pipe is twisted by torques T 5 800 N # m acting at the ends causing an angle of twist of 3.58. The pipe has the following properties: L 5 2.1 m, d1 5 38 mm, and d2 5 56 mm. The shear modulus of elas-ticity G of the pipe is approximately:
(A) 36.1 GPa
(B) 37.3 GPa
(C) 38.7 GPa
(D) 40.6 GPa
(A) 36.1 GPa
Physics & Space Science
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A 230000 V-rms powerline carries an average power Pavg = 250 MW a distance of 200 km. If the total resistance of the cables is 10 ohms, what is the resistive power loss?
a. 1.0 MW b. 2.5 MW c. 5.4 MW d. 12 MW e. 10 kW
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The galactic center lies in the direction of which constellation?
A) Orion B) the Big Dipper C) Leo D) Sagittarius E) Taurus
Physics & Space Science
The measured temperature of the cosmic background radiation is ____________________
Fill in the blank(s) with correct word
Physics & Space Science
A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirror reflects it to the focus instead
Indicate whether the statement is true or false
Physics & Space Science