Carbon has several isotypes including 12C and 14C. These isotopes differ in the number of:
a. electrons only
b. neutrons only
c. protons only
d. electrons and protons
e. protons and neutrons
b
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Based on observations of the universal expansion, the age of the universe is about
A) 14,000 years. B) 14 million years. C) 14 billion years. D) 14 trillion years.
The coefficient of linear expansion of lead is 29 × 10-6 K-1. What change in temperature will cause a 10-m long lead bar to change in length by 3.0 mm?
A) 5.0 K B) 10 K C) 15 K D) 20 K E) 25 K
The volcanic activity of Enceladus has what effect outside the moon itself?
What will be an ideal response?
What is the magnitude of the free-fall acceleration at a point that is a distance 2R above the surface of the Earth, where R is the radius of the Earth?
a. 4.8 m/s2 b. 1.1 m/s2 c. 3.3 m/s2 d. 2.5 m/s2 e. 6.5 m/s2