According to our theory of solar system formation, what are asteroids and comets?
A) leftover planetesimals that never accreted into planets
B) the shattered remains of collisions between planets
C) chunks of rock or ice that condensed after the planets and moons finished forming
D) chunks of rock or ice that were expelled from planets by volcanoes
A) leftover planetesimals that never accreted into planets
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X-ray observations of elliptical galaxies reveal large amounts of very hot ________ in their interior
Fill in the blank(s) with correct word
One liter is equal to
a) 0.946 quarts b) 1 cubic meter c) 2.54 cubic yards d) 100 cubic centimeters
A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are 0.70 × 1011 Pa (aluminum), 0.91 × 1011 (brass), and 1.1 × 1011 (copper)
Which wire would stretch the least distance? A) brass B) copper C) aluminum D) They will all stretch the same distance.
When you catch a ball, you feel a force against your hand. Why?
What will be an ideal response?