In astronomy and geography, a direction or plane is said to be horizontal if it is perpendicular to the vertical direction. In mathematics, anything parallel to the horizon is called horizontal. Because vertical is the opposite of horizontal, anything that makes a 90-degree angle (right angle) with the horizontal or the horizon is called vertical. So, the horizontal line is one that runs across from left to right.
Answer:
The answer is 0.83 seconds.
Explanation:
The formula of free fall is following:
Where g=9.8 m/s^2 and t=2 seconds, the rock takes:
19.6 meters. This is the half distance of the cliff. The whole distance is 39.2 meters. So it takes:
2.83 second to fall down completely. The rock takes the second half of the cliff in 0.83 seconds
Answer:
Cumulus Congestus & Cumulonimbus Clouds
Answer:
a) v = 141.9 m/s
b) v = 317.4 miles/h
Explanation:
a) How fast was he moving in meters per second?
Hence, the jet ski is moving at 141.9 meters per second.
b) How fast was he moving in miles per hour?
Therefore, the jet ski is moving at 317.4 miles per hour.
I hope it helps you!
The central maximum
extends to the first minimum on either side.
So the first minimum
occurs at <span>3cm / 2 = 1.5cm = 0.015m to the side from the center of the
central maximum. </span>
<span>Now using the formula,
λ = a(y/L)</span>
Where a is the width of
the slit, y = distance of first minimum from center, L = distance of screen
from slit, and λ = wavelength of the light that strikes a single slit at normal
incidence which is unknown here.<span>
a = L x λ/y
a = 1.80 m x (λ / 0.015 m)
a = 120 λ </span>
<span>Use the value of λ for
any light and you get the width of slit.</span>