Using the value of atmospheric pressure at sea level, 1 × 105 Pa, estimate the total mass of the earth's atmosphere above a 5-m2 area.
Answers
Answer:
5×10^4 kg
Explanation:
pressure= force/Area
area= 5m^2
pressure = 1×10^5 Pa
1×10^5=mg/5 (weight will be the force)
5×10^5=m×10 (gravitational field strength of the earth)
5×10^5×10^-1 =m
mass=5×10^4 kg!
hope this helps!
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-- The amount of energy radiated by the sun is not affected at all by how much
of it we use or don't use.
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Solar energy is going to keep arriving here, continuously, at the same rate,
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Answer:
Emphasizes
Explanation:
The expression of an art is intelligible to those that understand it, as such to make an impression an artist has to emphasize the point they want to communicate
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Answer:
A - emphasizes
Answers
Where f is the frequency in Hertz, wavelength is in meters.
Speed, v = 2*5 = 10
Speed = 10 m/s.
28.45 m/s
34.91 m/s
21.29 m/s
Answers
The initial velocity is 12.34 m/s
Explanation:
The vertical component of the initial velocity determines the maximum height.
The formula to apply is : v²=u²+2as , where
v=y-component, final velocity = 0 m/s
u= y-component of the initial velocity = ?
s= distance traveled = 2.3 m
a=acceleration due to gravity = -9.81 m/s²
Using the values in the equation
v²=u²+2as
0²=u²+2×2.3×-9.81
0=u²-45.126
45.126=u²
√45.126= u
6.7175 m/s
The vertical component of velocity is given by;
velocity*sin(angle with horizontal)
velocity=6.7175 / sin 33°
=12.338 m/s
=12.34 m/s
Learn More
Finding Initial velocity :brainly.com/question/1858995
Keywords : angle, maximum height, initial velocity, friction
#LearnwithBrainly
Answers
Data will show you the element that you need to draw conclusion of your study/experiment.
For example, if after you gather the the data from 100 heart patient and 70 percent of them are obese, you can draw a conclusion that obesity is linked with heart disease
hope this helps
C. Light can pass through Object B faster than it can pass through Object A.
D. The optical density of Object B is higher than the optical density of Object A.
Answers
The correct answer is
C. Light can pass through Object B faster than it can pass through Object A.
In fact, the index of refraction of a material is defined as:
where c is the speed of light in vacuum and v is the speed of light in the material. Rearranging the equation, we can write the speed of light in the material as:
So we that, the smaller the refractive index n, the greater the speed of light in the material, v. In this problem, object B has lower refractive index than object A, so light travels faster in object B.