Zero Steve
February 28, 2005 
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| Zero Nothin Goes Here CD RARE MFSL Cipollina Steve Kimock John Kahn Grateful | |
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Chem help ten easy points answer in 5 mins please help!!!?
Bob, Jill, Kim, and Steve measure an object's length, density, mass, and brightness, respectively. Which student must derive a unit of measurement?
(Points: 1)
Bob
Jill
Kim
Steve
Helium melts at –272°C. Which of the following statements is true?
(Points: 1)
Helium atoms stop moving when they change from gas to liquid.
Helium solidifies close to absolute zero.
Helium solidifies below absolute zero.
You could use helium to cool an object to absolute zero.
The metric unit of force is the Newton (N), which is kg∙m/s2. Convert 10 mg∙cm/s2 to Newtons. Be careful when working with units.
(Points: 1)
1 x 10-2 N
1 x 10-5 N
1 x 10-6 N
1 x 10-7 N
Answer fast please I have 12 minutes left!
Bob can use a ruler.
Kim can use a balance.
Steve can use a photometer.
Jill, however, has to measure mass and volume, then divide to get the density.
Nothing stops moving when it becomes a liquid. And the boiling point of helium is much higher than its melting point.
The melting point is the same as the freezing point. Absolute zero is -273, which is just below -272, so yes, helium solidifies close to absolute zero.
Helium can't solidify below absolute zero. There is no such thing as below absolute zero.
You can't use helium to cool an object to absolute zero. You can't cool anything all the way to absolute zero.
10 mg∙cm/s2 ∙ 10^-6 mg/kg ∙ 10^-2 m/cm = 10^(1-6-2) kg∙m/s^2
= 10^(-7) N
Steve Bug - Zero Balance
