An artificial satellite is moving
2 answers:
Explanation:
Distance covered by the satellite in 24 hours
s=2πr
=2×3.14×42250=265464.58 km
Therefore speed of satellite,
v=
time taken
distance travelled
=
24×60×60
265464.58
=3.07 km s
−1
GIVEN:
The radius of the orbit, R = 4200km.
The time taken to revolve around the Earth, T = 24hr(1day).
ANSWER:
We know that the speed of the satellite,
v = Circumference of the orbit/Time taken
- 2πR/T
- 2 × 3.14 × 4200km/24hr
- 1099km/hr
- 1099kmph.
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Explanation:
Answer:
- 3 cm
Explanation:
From the mirror formula;
1/f = 1/v + 1/u ; where f is the focal length, v is the image distance, and u is the object distance.
1/-4.5 = 1/9 + 1/v
1/v = -1/4.5 - 1/9
= -1/3
Therefore;
v = -3 cm
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Image distance is - 3cm
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