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morrisjillian23
03.10.2019 •
Physics
State one difference between solar cells and solar heating systems?
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Ответ:
Ответ:
This water will be stored in a thermal reservoir, which will maintain its temperature until the moment of use.
The size of the reservoir and the area of solar thermal collectors (solar heating plates) required for the solar heating system vary according to the amount of hot water used in the residence.
This is simple to calculate after an interview with the residents, where the consumption profile will be studied according to the habits of bathing, washing utensils, clothes, etc.
In a residential solar photovoltaic generator system the solar panels are of the photovoltaic module type, consisting of photovoltaic solar cells that transform solar radiation into direct current electric energy.
For the operation of an on-grid photovoltaic solar system (connected to the grid) it is necessary to use a grid-tie inverter, which converts the energy generated into continuous currents by the photovoltaic solar panels into current electric energy Alternating.
The grid-tie inverter is then connected to the general picture of the residence, where it is in charge of mixing the solar energy (already in alternating current) with the power of the public network, allowing to use it in any apparatus or electrical equipment.
Ответ:
a) 20.34 N
b)17.64 N
c)16.47 N
d)38.63m
Explanation:
a) F=m*a. Earth gravity is 9.8m/s2. If the elevator goes upwards, tension on the rope will be higher. To find the tension we need to all accelerates. Total accelerates effects the elevator is a=9.8+1.5=11.3 m/s2. Then;
the tension is 20.34N
b) There is no accelerate in this situation therefore the tension is:
F=1.8*9.8=17.64 N
c) In this situation elevator goes down. We need to subtract gravity from elevator acceleration. a=9.8-0.65=9.15m/s2
F=1.8*9.15=16.47 N
d) Total distance is: