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3 years ago

A total solar eclipse is visible from

Physics

2 answers:

leonid [27]3 years ago

6 0

Answer:

b. only within the moon’s umbra.

Explanation:

A total solar eclipse occurs when the moon blocks the sunlight falling on the Earth. It occurs at the bright side of the Earth when Earth passes through the umbra of the moon.

When sun, moon and Earth align in a straight line, the disk of the moon is able to block the disk of the sun causing the sunlight to get blocked. Shadow of moon falls on the Earth. A total eclipse occurs when the sun is complete blocked and there is total darkness. It is visible from those areas which pass through the moon's umbra.

True [87]3 years ago

5 0

Hey! Hope that this helps. I'm fairly certain the answer is B, because I know that it's not visible from all over the earth, so that eliminates A, but doing some research I found out that an observer in the umbra experiences a total eclipse.

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Climates on Earth get _____ as you move from the equator to the poles.

andreev551 [17]

The correct answer that would best complete the given statement above would be the last option: COLDER. Climates on Earth get colder as you move from the equator to the poles. The places that are located near or on the equator experience the warmest or the hottest climates such as Africa. Hope this answer helps.

5 0

2 years ago

Read 2 more answers

Here, mA = 3.65 kg and mB = 7.05 kg. The string connecting the two objects is of negligible mass and the pulley is frictionless.

mr_godi [17]

Answer:

The magintude of the acceleration for both objects is $3.11m/s^2$

Explanation:

Drawing a free body diagram on the two boxes we can analyze the system more easily.

we can take the acceleration going up as positive for reference purposes.

for mA let's suppose that is ascending so:

$T_A-m_A*g=m_A*a$

and for mB (descending):

$T_B-m_B*g=-m_B*a$

$T_A=T_B$

because the two boxes has the same acceleration because they are attached together:

$m_B*g-m_B*a-m_a*g=m_a*a\\(m_B-m_A)*g=(m_a+m_B)*a\\a=\frac{(7.05kg-3.65kg)*9.8m/s^2}{3.65kg+7.05kg}\\\\a=3.11m/s^2$

So the magintude of the acceleration for both objects is $3.11m/s^2$

5 0

2 years ago

Which of the following does NOT support the geologic evidence used to date the earth?

Zanzabum

Answer:

comparing the anatomy of organisms

Explanation:

Basically, Rocks are the solid evidence used to date the earth.

Due to the changing in the genetic make up of organisms,the anatomy of organisms is not a reliable evidence to date the earth.

4 0

2 years ago

At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three different directions. As a res

hram777 [196]

Answer:

F₃ = 122.88 N

θ₃ = 20.63°

Explanation:

First we find the components of F₁:

For x-component:

F₁ₓ = F₁ Cos θ₁

F₁ₓ = (50 N) Cos 60°

F₁ₓ = 25 N

For y-component:

F₁y = F₁ Sin θ₁

F₁y = (50 N) Sin 60°

F₁y = 43.3 N

Now, for F₂. As, F₂ acts along x-axis. Therefore, its y-component will be zero and its x-xomponent will be equal to the magnitude of force itself:

F₂ₓ = F₂ = 90 N

F₂y = 0 N

Now, for the resultant force on ball to be zero, the sum of x-components of the forces and the sum of the y-component of the forces must also be equal to zero:

F₁ₓ + F₂ₓ + F₃ₓ = 0 N

25 N + 90 N + F₃ₓ = 0 N

F₃ₓ = - 115 N

for y-components:

F₁y + F₂y + F₃y = 0 N

43.3 N + 0 N + F₃y = 0 N

F₃y = - 43.3 N

Now, the magnitude of F₃ can be found as:

F₃ = √F₃ₓ² + F₃y²

F₃ = √[(- 115 N)² + (- 43.3 N)²]

F₃ = 122.88 N

and the direction is given as:

θ₃ = tan⁻¹(F₃y/F₃ₓ) = tan⁻¹(-43.3 N/-115 N)

θ₃ = 20.63°

7 0

2 years ago

Trace fossils would include all of the following EXCEPT

Vadim26 [7]

Answer:

Im pretty sure its fossilized nests because nests arent tracings. hope this helps

Explanation:

6 0

2 years ago