A(n) ____________________ is a collection of billions of stars
Fill in the blank(s) with correct word
galaxy
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Rotational Kinetic Energy: The L-shaped object shown in the figure consists of three small masses connected by extremely light rods. Assume that the masses shown are accurate to three significant figures. How much work must be done to accelerate the object from rest to an angular speed of 3.25 rad/s (a) about the x-axis, (b) about the y-axis?
Fill in the blank(s) with the appropriate word(s).
Why don't the nuclei of atoms contain any types of quarks but ups and downs?
A: Those are the only kind of quarks that exist. B: Only those types of quarks have positive charges. C: Only those types of quarks have negative charges. D: The other flavors are not massive enough. E: The other flavors do not live for very long.
Organic molecules are
A) carbon-based. B) silicon-based. C) living cells. D) found only on Earth. E) not found outside our solar system.
Would you be richer if you had a hunk of gold whose weight is 1 newton on the moon, or one whose weight is 1 newton on Earth, and why?
A) 1 newton on the moon, because then the gold's weight on the moon would be larger. B) 1 newton on the moon, because then the gold's mass would be larger. C) 1 newton on Earth, because then the gold's mass would be larger. D) 1 newton on Earth, because then the gold's weight on Earth would be larger. E) It wouldn't make any difference, because the amount of actual gold would be the same in both cases.