In Young's two-slit experiment, the distance between the slits and the screen is 1.1 m and the distance between the slits is 0.040 mm
If the second order bright fringe is measured to be 4.2 cm from the centerline, what is the distance between the adjacent fringes?
A) 6.3 cm
B) 3.1 cm
C) 1.3 cm
D) 2.1 cm
E) 4.2 cm
D
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After tying a string to a rock, you twirl the rock around above your head. If the string were to break, what path would the rock follow?
A. The rock will fall down immediately. B. The rock will go in a straight line before falling down. C. The rock will fly upward. D. The rock will complete the circle before falling down.
The physical disintegration or fracturing of rock is called ______________
Fill in the blank(s) with correct word
Suppose an elliptical galaxy is so far away that we cannot see even its brightest stars individually. Which of the following techniques might allow us to measure its distance?
A) using a white dwarf supernova as a standard candle B) parallax C) using Cepheid variables as standard candles D) radar ranging
Which of the following best describes what we mean by the universe?
A) a vast collection of stars that number as many as the grains of sand on all the beaches on Earth B) the sum total of all matter and energy C) all the galaxies in all the superclusters D) The universe is another name for our Milky Way Galaxy.