Answer:
2,5 km (2500 meters)
Explanation:
Half of an hour is 30 minutes, so you divide 5/2=2,5
In scientific notation, if the exponent of 10 is positive, the number is very very large. In the metric system, very large numbers are expressed in megameters (Mm) or gigameters (Gm). Gigameters is equal to 10⁹ meters. So, in SI prefix, that would be equal to 150 Gm. In kilometers, that would be equal to:
1.5×10¹¹ m * (1 km/1000 m) = 1.5×10⁸ km
Answer:
option C
Explanation:
The correct answer is option C
When the ray of light pass from higher refractive index to lower refractive index then the light bend away from the normal.
when the refracted ray is parallel to the boundary of the medium, θ₂ = 90°
and the incident angle θ₁
so, the angle θc is known as the critical angle.
At critical angle the refracted ray becomes parallel to boundary surface.
Of course in as the Earth make a full revolution we see the sun and no stars except the sun and when our section of Earth is facing away from the sun we can see other starts
also as the Earth revolves around the sun certain start can be seen and certain start go out of view<span />
There is no net vertical force.
The 20N upward is exactly balanced by the 20N downward.
There IS a net horizontal force.
(22N to the right) + (14N to the left) = 8 N to the right.
The net force acting on this object is 8 newtons to the right.
