need asap 27. Does h E-M radiation? uman body at normal temperature emit electro
ID: 1732160 • Letter: N
Question
need asap
27. Does h E-M radiation? uman body at normal temperature emit electro-magnetic radiation? What is the kind of this A. No, it does not B. Yes, mostly it is a visible light but it is very dim so we cannot see it C. Yes, mostly it is an invisible ultraviolet radiation D. It depends on the mass of the body, without knowing the mass it is impossible to give the answer E. Yes, mostly it is an infrared radiation 28. There are two heating elements, both at high temperatures. One element is red, the second one is white. Which one has a lower temperature? A. the heating element that appears red in color. B. the heating elements that appears white. 29. The current in an electric hair dryer is 10 Amps. How much charge flows through the hair dryer in he hair drver in 5 minutes?Explanation / Answer
27) E yes most of it is in infrared region
28) A the heating element that appears red in colour
29) charge is given by
Q =it
i - current
t time
plugging in the values we get
Q = 10 x 5 x60 = 3000 C
Q = 3000 C
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