If one branch of a 120-v power lines is protected by a 20-A fuse, will the fuse carry an 8-Ώ load
1 answer:
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Answer:
e) True, f) False
Explanation:
e) Let consider a close system, that is, a system with no mass interactions with surroundings. Then, we get the following expression by the First Law of Thermodynamics:
(1)
Where:
- Net input heat, measured in joules.
- Net output work, measured in joules.
- Change in thermal energy, measured in joules.
Please notice that work comprises all kind of work (i.e. mechanical, electric, magnetic), whereas heat comprises all heat interactions including chemical and radioactive phenomena.
If thermal energy is released, then , which is caused by three scenarios:
(i) ,
,
(ii) ,
,
(iii) ,
In the case ,
, the thermal energy of the system is increased. Therefore, thermal energy is released during some energy conversions. Answer: True
f) A liquid solidifies when temperature goes below point of fusion, meaning a realease of heat with no work interactions. That is:
,
(2)
If , then
. Then, if a liquid absorbs heat energy, then thermal energy is increase and the liquid does not solidifies. Answer: False.
Complete Question
The compete question is shown on the first uploaded question
Answer:
The speed is
Explanation:
From the question we are told that
The distance of separation is d = 4.00 m
The distance of the listener to the center between the speakers is I = 5.00 m
The change in the distance of the speaker is by
The frequency of both speakers is
Generally the distance of the listener to the first speaker is mathematically represented as
Generally the distance of the listener to second speaker at its new position is
Generally the path difference between the speakers is mathematically represented as
Here is the wavelength which is mathematically represented as
=>
=>
=>
Here n is the order of the maxima with value of n = 1 this because we are considering two adjacent waves
=>
=>
