There is a greater proportion of carbon-14 in

A) new bones.
B) old bones.
C) same in each


Answer: A

Physics & Space Science

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The Earth's circumference was first determined by:

A) Aristotle using lunar eclipses. B) Pythagoras with geometry. C) Hipparchus with stellar parallaxes. D) Erastothenes with solstice shadows. E) Aristarchus with first and third quarter Moon timings.

Physics & Space Science

Mercury has "weird terrain" directly opposite its huge Caloris Impact Basin

Indicate whether the statement is true or false

Physics & Space Science

Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 8 and 9 cm, how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions?

a. 0 b. 2 c. 3 d. 4 e. more than 4

Physics & Space Science

An ac series circuit consists of a voltage source of frequency 60 Hz and voltage amplitude V, a 533-? resistor, and a capacitor of capacitance 6.4-?F

What must be the source voltage amplitude V for the average electrical power consumed in the resistor to be 989 W? There is no inductance in the circuit.

Physics & Space Science