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Sunny_sXe [5.5K]
3 years ago
10

Which of the following is an illuminated object? a lightbulb a fire the Sun the Moon

Physics
2 answers:
Harlamova29_29 [7]3 years ago
7 0
The lightbulb, the fire, and the Sun all create light from some energy source.

The Moon doesn't create light.  The parts of it that the Sun shines on
are visible, the parts of it that the Sun doesn't shine on are not visible. 

Just like a rock on the ground at night, the Moon must be illuminated
by a flashlight in order to be seen.  The Sun is the flashlight.
Neporo4naja [7]3 years ago
5 0

Answer:

LIGHTBULB

Explanation:

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Convection currents produce the heat in the Earth’s interior.
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Answer:

False

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Aleks04 [339]
It is subduction;) good luck on the others my man
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The process of wind blowing sand from one location to another is called
lesya [120]

Answer:

weathering

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What would happened if there is no invented of machine?​
yuradex [85]

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4 0
2 years ago
a flag of mass 2.5 kg is supported by a single rope. A strong horizontal wind exerts a force of 12 N on the flag. Calculate the
tatuchka [14]
The free-body diagram of the forces acting on the flag is in the picture in attachment.

We have: the weight, downward, with magnitude
W=mg = (2.5 kg)(9.81 m/s^2)=24.5 N
the force of the wind F, acting horizontally, with intensity
F=12 N
and the tension T of the rope. To write the conditions of equilibrium, we must decompose T on both x- and y-axis (x-axis is taken horizontally whil y-axis is taken vertically):
T \cos \alpha -F=0
T \sin \alpha -W=
By dividing the second equation by the first one, we get
\tan \alpha =  \frac{W}{F}= \frac{24.5 N}{12 N}=2.04
From which we find
\alpha = 63.8 ^{\circ}
which is the angle of the rope with respect to the horizontal.

By replacing this value into the first equation, we can also find the tension of the rope:
T= \frac{F}{\cos \alpha}= \frac{12 N}{\cos 63.8^{\circ}}=27.2 N




7 0
3 years ago
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