The current in the home is (AC) and the AC tends the flow near the surface of the cross section area the wire according to (skin effect) ,on the other hand , the current in a battery is (DC) and DC flow in all of the cross section area of the wire
The best answer would be, Newton’s first law of motion.
Answer:
Explanation:
Let us consider image formation from first mirror
object distance u = - 15 cm
v = ?
f = 10 cm
1 / v - 1 / u = 1 / f
1 / v + 1 / 15 = 1 / 10
1 / v = 1 / 10 - 1 / 15
= .1 - .067
= .033
v = 30 cm
Magnification M1 = v / u = - 30 / 15 = - 2
This image will act as object for second mirror
object distance for second mirror
u = 70 - 30 = 40 cm
f = 20 cm
v = ?
1 / v - 1 / u = 1 / f
1 / v + 1 / 40 = 1 / 20
1 / v = 1 / 20 - 1 / 40
= .05 - .025
= .025
v = 40 cm
Magnification M2 = v / u
= - 40 / 40
= -1 .
overall magnification
M = M1 X M2
= -2 x -1
= + 2
Final image will be 2 times the object and it will be real and it will be erect with respect to object .
Answer:90 mins
Explanation:
majority of artificial satellites are placed in LEO, making one complete revolution around the Earth in about 90 minutes.
Answer:
D. All of the above
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