Answer:
a) 1321.45 N
b) 1321.45 N
c) 2.66 m/s^2
d) 2.21*10^-22 m/s^2
Explanation:
Hello!
First of all, we need to remember the gravitational law:

Were
G = 6.67428*10^-11 N(m/kg)^2
m1 and m2 are the masses of the objects
r is the distance between the objects.
In the present case
m1 = earth's mass = 5.9742*10^24 kg
m2 = 497 kg
r = 1.92 earth radii = 1.92 * (6378140 m) = 1.2246*10^7 m
Replacing all these values on the gravitational law, we get:
F = 1321.45 N
a) and b)
Both bodies will feel a force with the same magnitude 1321.45 N but directed in opposite directions.
The acceleration can be calculated dividing the force by the mass of the object
c)
a_satellite = F/m_satellite = ( 1321.45 N)/(497 kg)
a_satellite = 2.66 m/s^2
d)
a_earth = F/earth's mass = (1321.45 N)/( 5.9742*10^24 kg)
a_earth = 2.21*10^-22 m/s^2
D) very hot, these type of stars are hotter than the sun ranging about 180,000 degrees Fahrenheit.
The answer is D. Evidence
Hope this helps!:)
Answer:
Explanation:
First we must find the real power that is dissipating for each of the two cases, this is achieved by multiplying the nominal power by the efficiency
P=Poη
P=power
Po=nominal power
η=efficiency
POWER NUMBER 1
P1=400*0.89=356W
POWER NUMBER 2
P2=400*0.94=376W
then we find the power change by subtracting both results
ΔP=P2-P1=376-356=20W
always ensure that the efficiency in any system is maximized, because it is always required that the amount of energy delivered by the system is maximum with the same input power.
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