Answer:
A. 70 m OS the correct one
Answer:
A) 8.03Hz
Explanation:
f = V/λ
Where wavelength( λ )= 30m
Speed (V) =241m/S
f= 241/30=8.03Hz
Answer: 132.02 J
Explanation:
By definition, the kinetic energy is written as follows:
KE = 1/2 m v²
In our question, we know from the question, the following information:
m = 0.1434 Kg
v= 42.91 m/s
Replacing in the equation for KE, we have:
KE = 1/2 . 0.1434 Kg. (42.91)² m²/s² ⇒ KE = 132.02 N. m = 132.02 J
Answer:
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- <u><em>Using thermal imaging to detect heat energy loss through the roof and windows.</em></u>
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Explanation:
<em>Heat energy</em> is transmitted by conduction, convection, and <em>radiation</em>.
All warm objects emit heat energy in the form of infrared <em>radiation</em>, which is a kind of invisible light (light with a lower frequency and longer wavelentgh than the visible light).
The amount of heat energy emitted by an object is proportional to its temperature: the higher the temperature of the object body, the greater the amount of radiant energy emitted.
A<em> house </em>can loss heat energy by radiation through the walls, <em>roof and windows.</em>
<em>A thermographic camera or thermal imaging camera </em>will detect the infrared radiation emitted through walls, roof and windows, showing a red image in those areas.
I found the image attached in internet, showing the red areas around the roof and windows of a house, mainly, using a thermal imaging camera.