Almost in every Physics books, momentum is denoted by P with small arrow(→) pointing towards right, placed on top of P.
I am guessing you asked about linear momentum.
Answer:
In simple terms, fats are animal fats whereas oils are vegetable oils. The other difference is fats tend to be solids at room temperature; on the other hand, oils tend to be liquid at room temperature.
Explanation:
You are correct!
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Complete Question
Use Stefan's law to find the intensity of the cosmic background radiation emitted by the fireball of the Big Bang at a temperature of 2.81 K. Remember that Stefan's Law gives the Power (Watts) and Intensity is Power per unit Area (W/m2).
Answer:
The intensity is
Explanation:
From the question we are told that
The temperature is
Now According to Stefan's law
Where is the Stefan Boltzmann constant with value
Now the intensity of the cosmic background radiation emitted according to the unit from the question is mathematically evaluated as
=>
=>
substituting values
Answer:
Qh = -491.85J
(It is negative due to rejected heat)
Explanation:
In the question, the heat received by the refrigerator is at the cold reservoir where Qc= 415J
Now, we are looking for Qh.
Thus, using thermodynamics equation, we have;
Qc/Qh = — Tc/Th
Making Qh the subject, we obtain ;
-(QcTh)/Tc = Qh
Plugging in the relevant values, we obtain ;
-(415x320)/270 = - 132800/270 =
- 491.85J