How do you answer number 3 a and b?
1 answer:
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Answer:
Height of mirror 0.075 m
width of mirror 0.325 m
Explanation:
given data
wide = 1.3 m
high = 0.30 m
driver’s eyes = 0.50 m
rear window = 1.50 m
solution
we take here height / width of the mirror is
height / width = .................1
and
height /width of the window is
height /width = .................2
and
distance of eye / window by the mirror is
distance of eye / window = .................3
so here
θ = θi = θr ....................4
and tanθ for vertical is
tanθ =
tanθ = ....................5
so
h = ....................6
put here value and we get
h = 0.075 m
and
when we take here tanθ for horizontal than it will be
tanθ =
tanθ = .......................7
so
....................8
put here value and we get
w = 0.325 m
Answer:
D. The star is approaching Earth.
Explanation:
As we know by the doppler's effect of light that
here we know that
= change in frequency
here we know that the wavelength of light coming from the star is decreased so the frequency will increase
now we have
here we know that
now we have
So here correct answer is
D. The star is approaching Earth.
Given:
L = 1 mH = H
total Resistance, R = 11
current at t = 0 s,
= 2.8 A
Formula used:
Solution:
Using the given formula:
current after t = 0.5 ms =
for the inductive circuit:
I =0.011 A