Which one of the following is true?
1 answer:
Answer:
(C) All spontaneous nuclear reactions are exothermic.
Explanation:
the answer is option C
Here the Spontaneous nuclear reactions occur on its own. You don't have to have any outside force. Mass defects are converted into energy during the reaction.
Mass defects are the difference between the overall product mass and the overall reactant mass.
The expression ' ' shows both the mass defect and the energy emitted, where, C is the speed of light.
Because energy is always released in spontaneous nuclear reactions, all nuclear spontaneous reactions are always exothermic.
Hence the correct option is C
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dónde es la velocidad de la esfera,
es suya velocidad inicial,
la aceleración debida a la gravedad,
la posición, y
la posición inicial. Tomamos
a referirse a la posición de la esfera en el momento que la esfera fue lanzada.
Entonces
Esto nos dice que la esfera alcanza una altura de 40 m en dos momentos - una vez hacia arriba y una vez hacia abajo. Sin embargo, independientemente del signo de la velocidad, sabemos que suya magnitud es 10 m/s, y así tenemos una rapidez de 10 m/s también en ambos momentos.
Answer: The correct answer is option C.
Explanation:
Weight = Mass × Acceleration
Let the mass of the space probe be m
Acceleration due to gravity on the earth = g
Weight of the space probe on earth = W
Acceleration due to gravity on the Jupiter = g' = 2.5g
Weight of the space probe on earth = W'
The weight of the space probe on the Jupiter will be 2.5 times the weight of the space probe on earth.
Hence, the correct answer is option C.