A 2.0-kg object moving 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost by the system as a result of this collision
a. 20 J
b. 15 J
c. 30 J
d. 25 J
e. 5.0 J
a
Physics & Space Science
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a. 2.9 thousand b. 29 thousand c. 290 thousand d. 2.9 million e. 29 million
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The lowest energy level in an atom is its
a. ionization level b. emission level c. absorption level d. photon level e. ground state
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Why are massive stars more luminous than low mass stars? That is, why is there a mass-luminosity relation?
What will be an ideal response?
Physics & Space Science