How star properties affect star formation? Provided following are the spectral types of four different main-sequence stars. Rank
1 answer:
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The new weight is 273.8 N
Explanation:
The weight of an object on Earth is given by
where
m is the mass of the object
g is the acceleration of gravity
The acceleration of gravity at the Earth's surface can be rewritten as
where
G is the gravitational constant
M is the Earth's mass
R is the Earth's radius
Substituting into the previous equation,
We said that in normal conditions, the weight of the person is 730 N:
Later, we are said that:
- The mass of the Earth increases by a factor of 6,
- The radius of the Earth increases by a factor of 4,
Substituting into the equation, we find the new weight of the person in these conditions:
So, the new weight is 3/8 of the original weight, therefore:
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Answer:
The frequency of the green light is
Explanation:
The visible region is part of the electromagnetic spectrum, any radiation of that electromagnetic spectrum has a speed of in the vacuum.
Green light is part of the visible region. Therefore, the frequency can be determined by the following equation:
(1)
Where c is the speed of light, is the wavelength and
is the frequency.
Notice that since it is electromagnetic radiation, equation 1 can be used. Remember that light propagates in the form of an electromagnetic wave (that is a magnetic field perpendicular to an electric field).
Then, can be isolated from equation 1
(2)
Notice that it is necessary to express the wavelength in units of meters.
⇒
Hence, the frequency of the green light is