The measure of pressure, especially in water is:
a. the press.
b. the kilogram.
c. the centimeter.
d. the mole.
e. the atmosphere.
e
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Most Greek philosophers believed in a geocentric Universe
a. True b. False Indicate whether the statement is true or false
Double-Slit Interference: A double-slit experiment uses coherent light of wavelength 633 nm with a slit separation of 0.100 mm and a screen placed 2.0 m away.(a) How wide on the screen is the central bright fringe?(b) What is the distance on the screen between first-order and second-order bright fringes?(c) What is the angular separation (in radians) between the central maximum and the first-order maximum?
What will be an ideal response?
What do we mean when we say that the rotation curve for the Milky Way Galaxy is "flat"?
A) Gas clouds orbiting far from the galactic center have approximately the same orbital speed as gas clouds located further inward. B) The amount of light emitted by stars at different distances is about the same throughout the galaxy. C) The disk of a spiral galaxy is quite flat rather than spherical like the halo. D) All the galaxy's mass is concentrated in its flat, gaseous disk.
Where is our solar system located within the Milky Way Galaxy?
A) very near the center of the galaxy B) roughly halfway between the center and the edge of the visible disk of the galaxy C) at the far edge of the galaxy's visible disk D) in the halo of the galaxy