Answer:
A. 1 in³ / 16.4 cm³
Explanation:
Inches is an imperial unit while centimeter is a metric unit.
1 inch = 2.54 cm
⇒1 inch³ = 2.54³
⇒1 inch³ = 2.54×2.54×2.54
⇒1 inch³ = 16.38 cm³ = 16.38 cc
So,
So, 1 in³ / 16.4 cm³ conversion factor should be used.
Every action has an equal opposite reaction
Answer: E = 0.85
Therefore the efficiency is: E = 0.85 or 85%
Explanation:
The efficiency (e) of a Carnot engine is defined as the ratio of the work (W) done by the engine to the input heat QH
E = W/QH.
W=QH – QC,
Where Qc is the output heat.
That is,
E=1 - Qc/QH
E =1 - Tc/TH
where Tc for a temperature of the cold reservoir and TH for a temperature of the hot reservoir.
Note: The unit of temperature must be in Kelvin.
Tc = 300K
TH = 2000K
Substituting the values of E, we have;
E = 1 - 300K/2000K
E = 1 - 0.15
E = 0.85
Therefore the efficiency is: E = 0.85 or 85%
Thes are all correct :<span>2.Scientists observe natural events occurring around them. They question these observations and investigate them.
3.All scientists follow one scientific method of investigation
4.If a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis.</span>