The scientific consensus regarding the age of Earth is that

A) there is insufficient data to determine Earth's age.
B) Earth is about 5 billion years old.
C) Earth is about 100 billion years old.
D) Earth is about 5 million years old.
E) Earth is about 5 thousand years old.


B

Physics & Space Science

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Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s would be a distance of ____ Mpc from Earth

a. 0.014 b. 70 c. 4930 d. 4970 e. 343,000

Physics & Space Science

T V ^(??1) is constant for an ideal gas undergoing an adiabatic process, where ? is the ratio of heat capacities Cp/Cv. This is a direct consequence of:

A. the zeroth law of thermodynamics alone B. the zeroth law and the ideal gas equation of state C. the first law of thermodynamics alone D. the ideal gas equation of state alone E. the first law and the equation of state

Physics & Space Science

Isaac Newton first became famous for his contributions to the understanding of

A) the laws of mechanics. B) the law of gravity. C) light.

Physics & Space Science

An 18 mm wide diffraction grating has rulings of 710 lines per mm. Light is incident normally on the grating. Monochromatic light of 506 nm wavelength is used. The largest angle from the normal at which an intensity maximum is formed is closest to:

A) 46° B) 44° C) 42° D) 40° E) 38°

Physics & Space Science