When you and your snowboard are in motion, which of the following can be zero?
A) momentum
B) kinetic energy
C) mass
D) inertia
E) none of the above
Answer: E
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The lowest tone to resonate in a closed pipe of length L is 200 Hz. Which of the following frequencies will not resonate in that pipe?
A) 200 Hz B) 400 Hz C) 600 Hz D) 1000 Hz E) 1400 Hz
If you had something the size of a sugar cube that was made of white dwarf matter, it would weigh ________
A) as much as a truck B) as much as an average person C) about 5 pounds D) as much as the entire Earth
The electrolysis of water breaks up the water molecules into hydrogen and oxygen, as shown in this photo. Why is the volume of the hydrogen that is collected twice the volume of the oxygen collected?
a. Hydrogen atoms are twice as big as oxygen atoms. b. There are twice as many hydrogen atoms in water as there are oxygen atoms. c. Oxygen atoms are 16 times as massive as hydrogen atoms. d. A gas formed from oxygen gas particles takes up twice as much space as a gas formed from the same number of hydrogen gas particles under identical conditions. e. The hydrogen occurs as H2 molecules of two atoms each while the oxygen is just single O atoms.
Which sequence of numbers represents the correct order of the following four steps in the user needs analysis process?
(1.) investigate alternatives to the current system (2.) make a build-versus-buy decision (3.) identify sources of information (4.) understand the organization's goals a. 1-2-3-4 b. 4-3-2-1 c. 3-1-4-2 d. 4-3-1-2