Which of the following expression(s) represents the electrical energy stored by a capacitor?
A) QV/2
B) CV2/2
C) Q2/2C
D) All of the expressions are correct.
E) None of the expressions is correct.
D
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A steel bar of rectangular cross section (a 5 38 mm, b 5 50 mm) carries a tensile load P. The allowable stresses in tension and shear are 100 MPa and 48 MPa, respectively. The maximum permissible load Pmax is approximately:
(A) 56 kN
(B) 62 kN
(C) 74 kN
(D) 91 kN
The highly inclined and backwards rotation of Triton supports the hypothesis that Triton is a Kuiper belt object captured by Neptune.
Answer the following statement true (T) or false (F)
The banking angle in a turn on the Olympic bobsled track is not constant, but increases upward from the horizontal. Coming around a turn, the bobsled team will intentionally "climb the wall," then go lower coming out of the turn
Why do they do this? A) to give the team better control, because they are able to see ahead of the turn B) to prevent the bobsled from turning over C) to take the turn at a faster speed D) to take the turn at a slower speed E) to reduce the g-force on them
Why do blue stragglers show up in globular clusters?
What will be an ideal response?