An ideal fluid, of density 0.85 × 10^3 kg/m3, flows at 0.50 kg/s through a pipe of radius 0.010 m. What is the fluid speed?
a. 0.95 m/s
c. 3.0 m/s
b. 1.9 m/s
d. 0.94 m/s
B
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Notice the distorted galaxy images, such as the large arc-shaped structure, in this image of a galaxy cluster. What can astronomers learn by carefully measuring the distortions in this image?
A) the total mass of the cluster B) the amount of dark energy in the universe C) the precise distance to the galaxy cluster D) the age of the galaxy cluster
Suppose that Earth's atmosphere had no greenhouse gases. Then Earth's average surface temperature would be ________
A) well below the freezing point of water B) slightly cooler, but still above freezing C) slightly warmer, but still well below the boiling point of water D) about the same as it is now
Calculate the magnitude of the flux of a constant electric field of 5.00 N/C tilted 60° away from the positive z-direction, through a rectangle with area 4.00 m2 in the xy-plane
1.0 2.10.0 N·m2/C 3.20.0 N·m2/C 4.More information is needed.
Although Uranus and Neptune have no liquid metallic hydrogen in their interiors, they do have magnetic fields
Indicate whether the statement is true or false