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Maksim231197 [3]
3 years ago
12

The picture below shows the positions of the Earth, Sun, and Moon during an eclipse.

Physics
2 answers:
Sonja [21]3 years ago
8 0

Answer:

The correct answer is the option<u><em> B) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.</em></u>

Explanation:

A lunar eclipse is an astronomical phenomenon that occurs when the Earth passes directly between the Moon and the Sun, causing the Earth's shadow produced by sunlight to be cast over the Moon completely covering it. For this to happen, the three celestial bodies must be formed in a straight line.

Every year there are between 2 and 7 lunar eclipses. According to the position of the Moon with respect to the Earth's shadow, 3 types of lunar eclipses occur.

The difference between a lunar eclipse and a solar eclipse is that, in the first case, the Earth stands between the Moon and the Sun casting a shadow on the Moon, while in a solar eclipse, the Moon stands between the Sun and Earth, casting its shadow to a small part of the latter.

Finally, <u><em>the correct answer is the option B) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.</em></u>

iogann1982 [59]3 years ago
6 0
The moon is IN the Earth's shadow.
Anybody on the night side of Earth saw the moon disappear during the past few hours.
This is a lunar eclipse.  (B)
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0.250 moles of gas are in a piston.The gas does 109 J of work while 240 J of heat are added. What is the change in internal ener
irina [24]

Answer:

+131Joules

Explanation:

Energy can be expressed using below expresion.

ΔE = (q + w).........eqn(1)

q will be + be if heat is gained hence, q= 240 J

work "w" will be - ve if work is done by the system, hence w= -109 J

Then substitute into eqn(1)

Change in Internal energy=

= (240 -109 )

= +131J

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3 years ago
If you had started with a larger mass, how would the half-life change?
iogann1982 [59]

Answer:

There is no change, unless your mass is somehow at the quantum level, at which the concept of half-life breaks down.

Half life is a property of the specific radioactive isotope...NOT of the initial sample's mass.

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3 years ago
Use the table below to calculate the acceleration of the object. Time (s) 0.0 3.0 6.0 9.0 Velocity (m/s) 0.0 1.2 2.4 3.6
antiseptic1488 [7]

explanation

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average velocity=1.8 m/s

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average time=18/4

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3 years ago
Select the choice that best completes the following sentence. Simple machines A. reduce the amount of energy needed to do work.
boyakko [2]

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You read in a science magazine that on the Moon, the speed of a shell leaving the barrel of a modern tank is enough to put the s
olga_2 [115]

To solve this problem we will use the definition of the kinematic equations of centrifugal motion, using the constants of the gravitational acceleration of the moon and the radius of this star.

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Where,

v = Velocity

r = Radius

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r = 1.74*10^6m

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v = \sqrt{ar}

v = \sqrt{1.6(1.74*10^6)}

v = 1.7km/s

The speed for this to happen is 1.7km/s

3 0
3 years ago
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