Combinations of atoms from the far right side of the periodic table with atoms from the far left side usually form ______________ compounds
a. organic
b. ionic
c. covalent
d. polar
b
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When measuring the Hall voltage, what happens to the reading when the current is increased 20%?
A. it increases 20% B. it increases 40% C. it increases 44% D. it decreases 20% E. it decreases 44%
Which of the following statements correctly describes the law of conservation of energy?
A) An object always has the same amount of energy. B) Energy can change between many different forms, such as potential, kinetic, and thermal, but it is ultimately destroyed. C) Energy can change between many different forms, such as potential, kinetic, and thermal, but the total quantity of energy in the universe never changes. D) The fact that you can fuse hydrogen into helium to produce energy means that helium can be turned into hydrogen to produce energy. E) It is not really possible for an object to gain or lose potential energy because energy cannot be destroyed.
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What will be an ideal response?
Imagine that you could put three electrons into isolation in a box. Initially, electrons A and B have kinetic energy E0 and electron C has kinetic energy 2E0. After isolation from observation for a short time, you examine the electrons again and find that one electron has energy 2E0 and two electrons have energy E0
Assume for this problem's sake that the electrons can transfer energy to one another but only in increments of E0. Assume also that all electrons are exactly the same. What is the probability that the higher energy electron is electron C?