Answer:
Step-by-step explanation:
The first thing you should know is that the gravitational force is:
F = GMm / r ^ 2
Then, by definition, the force is equal to
F = m * a = mv ^ 2 / r
We match both expressions:
GMm / r ^ 2 = mv ^ 2 / r
Let's clear the speed:
v = (GM / r) ^ (1/2)
On the other hand:
r = R + h
Substituting:
v = (GM / (R + h)) ^ (1/2)
Where,
G = 6.67x10 ^ -11 n · m2 / kg2
M = 5.98x10 ^ 24 kg
R = 6.38x10 ^ 6 m
h = 6.16 x 10 ^ 8 m
Substituting the values:
v = ((6.67 * 10 ^ -11) * (5.98 * 10 ^ 24) / ((6.38 * 10 ^ 6) + (6.16 * 10 ^ 8))) ^ (1/2)
v = 800m / s
answer:
<span> the orbital speed of a satellite 6.16 x 108 m above the surface of the earth is
</span><span> a. 800m/s
</span>
Answer:
D
Step-by-step explanation:
A'(-2*3/2=-3,3*3/2=4.5), B'(-6,-6), C'(6,0), D'(7.5,6)
Answer:
Sweety's age = 16 years and Sweety’s mother’s age = 44 years
Step-by-step explanation:
Let Sweety's age is x.
Sweety’s mother age = 12+2x
After 8 years,
Sweety's age = x+8
Sweety’s mother age = 12+2x+8
Since Mother's age will be 20 years less than three times my age.
2x+20 = 3(x+8)-20
2x+20=3x+24-20
2x+20=3x+4
Taking like terms together,
20-4=3x-2x
x = 16
Sweety's age = 16 years
Sweety’s mother’s age = 12+2x
= 12+2(16)
= 12 + 32
= 44 years
Hence, Sweety’s age and Sweety’s mother’s age is 16 years and 44 years respectively.
Answer:
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Step-by-step explanation:
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