The hydroturbine shown accepts water at 4 MPa and exits to the atmosphere. If the flow rate is 2 m^3/s, the maximum power output is nearest:
(A) 80 MW
(B) 70 MW
(C) 60 MW
(D) 50 MW
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What is Jupiter's Great Red Spot?
A) a giant storm that is about twice as wide as the planet Earth B) a giant crater on the surface of Jupiter C) a portion of strongly heated gas near the surface of Jupiter caused by a collision with a comet D) a huge patch of sulfur in Jupiter's atmosphere E) reflected sunlight that is red for the same reason sunrises and sunsets are red on Earth
In a paramagnetic material if a large magnetic filed is first applied and then reduced to zero, the intensity of magnetization is then equal to _________.
Fill in the blank(s) with the appropriate word(s).
The presence of which rocks show that between 2 and 3 billion years ago the atmosphere contained less than 1% of the amount of oxygen it contains today?
A) limestone B) banded iron formations C) silicate clays D) sandstone
Which of the following materials would you expect to be isotropic?
(a) A casting of aluminum (b) Aluminum foil (c) Aluminum wire (d) A polyethylene sheet 0.01 cm (0.004 inch) thick