The Alien Enemies Act of 1798 allowed the president to deport noncitizens considered dangerous. Allowed the president to ignore
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The cooling rate of the substance is approximately 0.0732.
According to the statement, the Newton's law of cooling is defined by the following formula:
(1)
Where:
- Final temperature, in degrees Celsius.
- Initial temperature, in degrees Celsius.
- Time, in minutes.
- Cooling rate, in
.
- Current temperature, in degrees Celsius.
Please notice that substance reaches thermal equilibrium when , that is when temperature of the substance is equal to the temperature of surrounding air.
If we know that ,
,
and
, then the cooling rate of the substance is:
The cooling rate of the substance is approximately 0.0732.
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Answer:
A
Explanation:
You must know the basics of Trigonometry to solve this.
First, you must know that
lies in the second quadrant, so sin is negative.
Next, since
pi/4, is the reference angle of 3 pi/4, this means that we can set up a right triangle with pi/4 as an angle, we get
So the answer is A