Aluminum alloys such as 2024 and 7050 _________ recommended for welding.
Fill in the blank(s) with the appropriate word(s).
are not
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Charge A and charge B are 3.00 m apart, and charge A is +1.44 C and charge B is +3.10 C. Charge C is located between them at a certain point and the force on charge C is zero. How far from charge A is charge C?
a. 1.78 m b. 2.15 m c. 1.22 m d. 0.465 m e. 2.04 m
The following set of redox reactions takes place when iron is dipped into a solution of copper ions
Fe ? Fe+2 + 2e- Cu+2 + 2e- ? Cu Which of the following describes what is happening with the electrons in the solution? A) The iron metal is releasing electrons and they are traveling to the copper ions. B) The copper is releasing electrons and they are traveling to the iron ions. C) The iron ions are gaining electrons from the copper metal. D) The copper ions are releasing electrons and they are traveling to the iron metal. E) none of the above
The external region of the Sun that tends to be pink is the
A) photosphere. B) chromosphere. C) mesosphere. D) corona.
The kind of molecular motion that mostly relates to the temperature of a substance is
A) translational motion. B) rotational motion. C) vibrational motion. D) all about equally