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3 years ago

Describe the cyclic patterns of lunar phases and eclipses of the Sun and moon.

1 answer:

4 0

Cyclic Patterns of Lunar Phases, Eclipses of the Sun and Moon, and Seasons. Waning Gibbous is the size between a Full Moon and a Third Quarter, and means three fourths of a full moon, but getting smaller.
Our Moon's shape doesn't really change — it only appears that way! The “amount” of Moon that we see as we look from Earth changes in a cycle that repeats about once a month (29.5 days). The relative positions of our Sun, Earth, and Moon, cause these changes.

As the Sun sets, the Moon rises with the side that faces Earth fully exposed to sunlight (5).The Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon)

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Lora (of mass 43.6 kg) is an expert skier. She starts at 3.6 m/s at the top of the lynx run, which is 67 m above the bottom. Wha

Likurg_2 [28]

Explanation:

As per the law of conservation of energy, the final mechanical energy of Lora is equal to its initial mechanical energy. So, when Lora is at the bottom of ski run then her potential energy will change into kinetic energy.

Hence, $E_{initial} = \frac{mv_{i}^{2}}{2} + mgh
$

$E_{final} = \frac{mv_{f}^{2}}{2}$

Now, final kinetic energy that will be at the bottom of the ski run is as follows.

Let, $E_{k} = E_{final}$

$E_{intial} = E_{final}$

$E_{k} = \frac{mv_{i}^{2}}{2} + mgh
$

= $\frac{(43.6 \times (3.6)^{2}}{2} + (43.6 \times 9.81 \times 67)$

= 282.53 + 28656.97

= 28939.502 J

Thus, we can conclude that her final kinetic energy at the bottom of the ski run is 28939.502 J.

3 0

3 years ago

Calculate the acceleration of a bus that speed up from 20ms-1 to 40ms-1 in 8 seconds?

Anastaziya [24]

Answer:

2.5 ms^-2

Explanation:

acceleration

= (final velocity - initial velocity)/time

= [(40m/s) - (20m/s)]/8s

= (20m/s)/8s

= 5/2 m/s²

= 2.5 m/s²

= 2.5 ms^-2

3 0

3 years ago

Anyone know a GOOD show on Netflix please kid shows pleaseeeee

Afina-wow [57]

Answer:

like horror? or action haha

Explanation:

7 0

3 years ago

Read 2 more answers

If a car with an initial velocity of 10 m/s accelerates at a rate of 50 m/s^2

expeople1 [14]

Given:

Initial velocity (u) = 10 m/s

Acceleration (a) = 50 m/s²

Time taken (t) = 3 s

To Find:

Final velocity (v)

Answer:

By using equation of motion, we get:

$\bf \longrightarrow v = u + at \\ \\ \rm \longrightarrow v = 10 + 50 \times 3 \\ \\ \rm \longrightarrow v = 10 + 150 \\ \\ \rm \longrightarrow v = 160 \: m {s}^{ - 1}$

$\therefore$ Final velocity (v) = 160 m/s

6 0

3 years ago

Please help quick! Discuss, in detail, three things that we can learn from fossils.

Free_Kalibri [48]

<span>1. We can learn what types of organisms lived at what times and where they lived.

2. We can learn about when certain groups of animals evolved and what their ancestors were like.

3. We can learn how the continents drifted by comparing where fossil species have been found (for example, a species that was found in Africa and South America but couldn't cross an ocean would tell us that Africa and South America used to be connected.

4. We can learn about organisms that no longer exist, including what they ate and looked like, how big they were, and other traits.</span>

8 0

4 years ago