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iren [92.7K]
3 years ago
9

The Sun's energy comes from which nuclear reaction? O A. Two nuclei joining to form a larger nucleus OB. Two nuclei giving off a

lpha particles OC. A nucleus splitting to form two or more smaller nuclei D. A nucleus giving off a positron​
Physics
2 answers:
BlackZzzverrR [31]3 years ago
6 0

Answer:

Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Explanation:

mash [69]3 years ago
3 0

Answer:

A. Two nuclei joining to form a larger nucleus

Explanation:

A P E X

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NASA sends an unmanned lander to test conditions on the surface of Mars. What is the magnitude of the gravitational force acting
kozerog [31]

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The magnitude of the gravitational force acting on the lander on the surface of Mars is 512.46 N.

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The Universal law of gravity is define as:

F = G \frac{M.m}{R^{2}}  (1)

Where F is the gravitational force, G is gravitational constant, M is the mass of Mars, m is the mass of the lander and R is the radius of Mars.

Before replacing the values in equation 1 it is necessary to express the radius of mars in terms of meters:

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Finally, equation 1 can be used:

F = (6.67x10^{-11} N.m^{2}/Kg^{2}) \frac{(6.42x10^{23} kg)(138.1 kg)}{(3397000 m)^{2}}

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