If you were to fall into a black hole, the ________ would kill you by tearing you apart
Fill in the blank(s) with correct word
tidal forces
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A light source simultaneously emits light of two wavelengths, 460 nm and 654 nm, respectively. The source is used in a double-slit interference experiment where the slit spacing is a 0.0431 mm, and the distance between double slits and the screen is 0.90 m. What is the separation between the second-order bright fringes of the two wavelengths as they appear on the screen? (1 nm = 10?9 m)
a. 4.1E–3 m b. 2.1E–3 m c. 8.1E–3 m d. 6.9E–3 m e. 4.7E–2 m
For the Pleiades, a fifty-million-year-old cluster, we find classes ________ and ________ already leaving the main sequence, making the seven bright giants in the "seven sisters."
Fill in the blank(s) with correct word
Two cars collide head-on. At every moment during the collision, the magnitude of the force the first car exerts on the second is exactly equal to the magnitude of the force the second car exerts on the first. This is an example of
A) Newton's first law. B) Newton's second law. C) Newton's third law. D) Newton's law of gravitation.
Why is a variable star so convenient for measuring distances to very remote objects?
What will be an ideal response?