When 1.5 kg of mass turns into energy, how much energy is released? Find the equation, substitution, and number with units.
1 answer:
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Answer:
Explanation:
From the given information:
Since both stars are in the same cluster, the magnitude and luminosity relationship can be calculated as:
Given that;
m_1 = 1 and
m_2 = 4
Therefore,
Making the subject of the formula:
=15.84
≅ 16
Hence, we can conclude that star X is more luminous by a factor of 16
To answer this question you must know that speed is only one magnitude, but velocity is a magnitude with an associated direction, that is, it is a vector.
For a circular movement like the one shown in the problem the velocity is defined as:
Where:
w = angular velocity
r = radius of the circumference
= angle of the object with respect to the origin
Speed is defined as:
.
In this problem we know that:
r = 30 m
So:
v = | V | = wr
v = (0.0503)(30)
v = 1.5079 m/s speed of the runner
On the other hand:
velocity of the runner