Identify a true statement about the atoms in the Universe
A) Most of the iron in your body was produced by nuclear fission reactions.
B) Most of the calcium atoms in your bones were assembled inside stars.
C) The iodine atoms were not formed during the violent deaths of rare massive stars.
D) The gold and silver atoms are more than 10 billion years old.
B
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The current W3C style sheet standards include modules for both CSS Levels 3 and 4.
Answer the following statement true (T) or false (F)
A spherical rock has a density of 3 g/cm3. If another rock has the same mass but is twice as wide, its density must be ________ g/cm3.
A. 6 B. 3/8 C. 3/4 D. 3/2
Process of Science: We cannot test the nebular theory for the formation of the Solar System in a rigorous scientific way because the Sun and planets formed in the distant past
Indicate whether the statement is true or false
Two cylinders made of the same material roll down a plane inclined at an angle ? with the horizontal. Each travels the same distance. The radius of cylinder B is twice the radius of cylinder A. In what order do they reach the bottom?
a. A reaches the bottom first because it has the greater acceleration. b. A reaches the bottom first because it has a smaller moment of inertia. c. B reaches the bottom first because is experiences a larger torque. d. B reaches the bottom first because it travels a larger distance in one rotation. e. They both reach the bottom at the same time, because each has the same linear acceleration.