Answer:
The answer to your question is: Ke = 3000 Joules
Explanation:
Data
mass = 15 kg
speed = 20 m/s
Kinetic energy = ?
Equation
Ke = 3000 Joules
Radio wave is the longest wavelength
Dalton's <span>law of partial pressures
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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
