The first satellite to capture a photograph of Earth from space was Explorer 1, launched on January 31, 1958. This and subsequent space missions like the Apollo program expanded our visual understanding and perception of our planet.
The first satellite to give us a photograph of the Earth from space was Explorer 1, launched on January 31, 1958. Prior to Explorer 1, the Soviet Union had launched Sputnik 1 in October 1957, but Explorer 1 was the first satellite to provide us with images of Earth from space. This marked a significant moment in human history, altering our perception of the planet.
Later on, the Apollo program further improved our visual understanding of Earth, with the Apollo 17 mission capturing the 'Blue Marble' - one of the rare full disk images of the Earth in sunlight. Such images underscored our perception of Earth as a small, yet interconnected and strikingly beautiful, celestial body floating in the vastness of space.
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B) His weight
C) His weight and mass
D) Neither the mass or the weight
Answer: B) weight
Explanation: Your mass does not change on the moon
B. 3.90 m/s2
C. 2.68 m/s2
D. 4.98 m/s2
Answer:
the pressure difference will be ΔP= P₂ - P₁ =29348.64 Pa
Explanation:
from Bernoulli's equation
P₁ + ρgh₁+ 1/2ρv₁²= P₂ + ρgh₂+1/2ρv₂²
where P = pressure , ρ= density , g= gravity , h= height , v=flow speed and 1 and 2 denote first and second segment respectively
then since the pipe is horizontal there is no difference in height (h=h₁=h₂) , thus
P₁ + 1/2ρv₁²= P₂ + 1/2ρv₂²
the pressure difference ΔP= P₂ - P₁ will be
ΔP= P₂ - P₁ = 1/2ρv₁² - 1/2ρv₂² = 1/2*ρ* (v₁² - v₂²)
replacing values
ΔP= 1/2*ρ* (v₁² - v₂²) = 1/2 *1145 kg/m³ * [(7.33 m/s)² - (1.57 m/s)²] = 29348.64 Pa
ΔP= 29348.64 Pa
Answer: Three
A plane requires minimum three points for its determination. These three points should be non-collinear or the third point should not lie in same line as made with any two points. By joining two points, a line is formed. A point is one dimensional.
By joining minimum three non-co-linear points, a plane can be formed.
Given three non-collinearpoints in space, they uniquely define a plane. The correct option is C.
Three-dimensional space requires at least three non-collinear points in order to establish a plane. Any additional points would also lie on the plane formed by these three points.
This is due to the fact that a plane is a two-dimensional surface that can go on forever. We define a plane that traverses all three points by joining three non-collinear points.
Their positions when combined result in a flat, continuous surface. More points would simply serve to confirm the plane's definition rather than alter it. Because of this, three points are sufficient to build a plane in three dimensions.
Thus, the correct option is C.
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Your question seems incomplete, the probable complete question is:
How many points does it take to determine a plane?
A. one
B. two
C. three
D. four