Biology Forums - Study Force

Consider a situation where two moving objects collide, stick to each other, and move off together. Linear momentum is definitely conserved.
  Indicate whether the statement is true or false

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[Ques. 2] What does the theory neutrino oscillation explain?
 a. Why more electron neutrinos leave the Sun and more muon and tau neutrinos reach the Earth.
  b. Why exactly 1/3 of the neutrinos reaching Earth are electron neutrinos.
  c. Why more muon and tau neutrinos leave the Sun and more electron neutrinos reach the Earth.
  d. Why more electron and muon neutrinos leave the Sun and more tau neutrinos reach the Earth.
  e. Why the same proportion of neutrinos reach the Earth as leave the Sun.

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[Ques. 3] Consider a situation where two moving objects collide, stick to each other, and move off together. Kinetic energy is definitely not conserved.
  Indicate whether the statement is true or false

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[Ques. 4] What is neutrino oscillation?
 a. The three flavors of neutrino mutating into one another.
  b. The vibration of neutrinos to create cosmic background radiation.
  c. The emission of electron neutrinos from the Sun.
  d. Vibrational motion of neutrinos on their way to Earth.
  e. The vibration of muon neutrinos that causes the creation of tau neutrinos.

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[Ques. 5] Linear momentum is definitely conserved.
  Indicate whether the statement is true or false

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[Ques. 6] What is the leading evidence for dark energy?
 a. That the universe is expanding.
  b. That dark matter is not affected by conventional energy.
  c. That ordinary energy must have a complement.
  d. That the rate of expansion of the universe is increasing.
  e. The expansion of the universe is slowing down and could eventually reverse.

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[Ques. 7] Kinetic energy is definitely conserved.
  Indicate whether the statement is true or false

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[Ques. 8] What do many physicists expect is required to explain why space is flat (i.e., that parallel lines stay parallel)?
 a. A theory of everything.
  b. Gravitational waves.
  c. Dark matter.
  d. The four forces.
  e. Proton decay.

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[Ques. 9] Centripetal force changes linear momentum but not angular momentum.
  Indicate whether the statement is true or false

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[Ques. 10] What is cosmic background radiation evidence for?
 a. Dark matter.
  b. Dark energy.
  c. The Big Bang theory.
  d. The theory of relativity.
  e. Neutrino oscillations.

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