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3 years ago

Can more people see a total solar eclipse or a total lunar eclipse?Explain.

1 answer:

6 0

More people can see a total lunar eclipse, because they are widely more visible because Earth casts a shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. Also because total lunar eclipses are basically "bigger" than a total solar eclipse.

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A bird is traveling west with a velocity of 8 m/s and momentum of 40 mg*m/s what's the birds mass?

VikaD [51]

Answer:

m = 5 [mg]

Explanation:

We must remember that the definition of linear momemtum is defined as the product of mass by distance.

P = m*v

P = momentum = 40 [mg*m/s]

m = mass [mg]

v = velocity = 8 [m/s]

Now clearing m:

m = P/v

m = 40/8

m = 5 [mg]

3 0

3 years ago

Which side of the electromagnetic spectrum has shorter wavelengths?

PIT_PIT [208]

Answer:

Hey,

All the answers should be blue.

Edg 2020/2021

8 0

3 years ago

A temperature of 273 K is the temperature at which water

xz_007 [3.2K]

273 K is the freezing point of water and it is equal to 0 degrees Celcius ,In this change ,heat is released so as to gain the suitable temperature for freezing.273 K is just the Celsius scale but with being 0 but the same scale ,this number was arrived at because temperature comes from the motion of a substance's particles.

5 0

3 years ago

Rodney is trying out one of Santa's new games that consists of three pieces that blow apart if the wrong key is inserted into th

ch4aika [34]

Answer:

The third piece moves at 6.36 m/s at an angle of 65° below the horizon

Explanation:

Linear Momentum

It's a physical magnitude that measures the product of the velocity by the mass of a moving object. In a system where no external forces are acting, the total momentum remains unchanged regardless of the interactions between the objects in the system.

If the velocity of an object of mass m is $\vec v$ , the linear momentum is computed by

$\displaystyle \vec{P}=m.\vec{v}$

The momentum of the board before the explosion is

$\displaystyle \vec{P}_{t1}=m_t\ \vec{v}_o$

Since the board was initially at rest

$\displaystyle \vec{P}_{t1}=$

After the explosion, 3 pieces are propelled in different directions and velocities, and the total momentum is

$\displaystyle \vec{P}_{t2}=m_1\ \vec{v}_1\ +\ m_2\ \vec{v}_2+m_3\ \vec{v}_3$

The first piece of 2 kg moves at 10 m/s in a 60° direction

$\displaystyle \vec{v}_1=(10\ m/s,60^o)$

We find the components of that velocity

$\displaystyle \vec{v}_1=$

$\displaystyle \vec{v}_1=m/s$

The second piece of 1.2 kg goes at 15 m/s in a 180° direction

$\displaystyle \vec{v}_2=(15,180^o)$

Its components are computed

$\displaystyle \vec{v}_2=(15\ cos180^o,15\ sin180^o)$

$\displaystyle \vec{v}_2=(-15,0)\ m/s$

The total momentum becomes

$\displaystyle P_{t2}=2+1.2+m_3\ \vec{v}_3$

Operating

$\displaystyle P_{t2}=++m_3\ \vec{v}_3$

Knowing the total momentum equals the initial momentum

$\displaystyle P_{t2}=+m_3\ \vec{v}_3=0$

Rearranging

$\displaystyle m_3\ \vec{v}_3=$

Calculating

$\displaystyle m_3\ \vec{v}_3=$

This is the momentum of the third piece

From the above equation, we solve for $\vec v_3$ :

$\displaystyle \vec{v}_3=\frac{1}{3}$

$\displaystyle \vec{v}_3=m/s$

The magnitude of the velocity is

$\displaystyle \vec{v}_3|=\sqrt{2.67^2+(-5.77)^2}=6.36$

And the angle is

$\displaystyle tan\theta =\frac{-5.77}{2.67}=-2.161$

$\displaystyle \theta =-65.17^o$

The third piece moves at 6.36 m/s at an angle of 65° below the horizon

5 0

3 years ago

Drag the correct object from the left to the statement that goes with it at the right. Use each choice only once. ResetHelp gene

valentinak56 [21]

The solar system is bounded together by gravity, and is made up of the Sun eight planets and dwarf planets

The correct options are;

The Sun ⇒ generates energy deep in its core through the fusion of hydrogen and into helium

Earth ⇒ has a single moon that is surprisingly large compared to its planet

Saturn ⇒ is orbited by at least two geologically active moons: Titan and Enceladus

Neptune ⇒ has a large moon, Triton, that almost certainly once orbited the Sun independently

Venus ⇒ has a surface hot enough to melt led as a result of extremely strong greenhouse effect

Uranus ⇒ has an axis tilt that gives it very extreme seasons

Pluto ⇒ was studied up close in 2015 by the New Horizons spacecraft.

Mars ⇒has no surface liquid water today, but shows clear evidence of such water in the distant past

Jupiter ⇒ has a famous storm known as the Great Red Spot

Eris ⇒ is similar in size to Pluto and also considered a dwarf planet

Mercury ⇒ has a greater difference in temperature between its day and night sides than any other world

Reasons:

The Sun generates energy by nuclear fusion in its cores

The size of the Moon more than a quarter of the Earth's size

Saturn moon Titan shows signs of volcanic activity

The moon Triton rotates in the opposite direction to the rotation of Neptune

Venus is the second closest planet to the Sun with a thick CO₂ atmosphere, resulting in a greenhouse effect that makes the planet 510°C hotter

Uranus has seasons that last for approximately 20 years

The New Horizons spacecraft took 9.5 years to reach Pluto after the mission was launched in 2006

Mars liquid water disappeared billions of years ago

The Great Red Spot storm has lasted for over 300 year

Eris, one of the largest dwarf planets and is further from the Sun than Pluto

The difference in temperature between the day and night sides of Mercury is 427°C - (-180°C) ≈ 607°C

Learn more here:

brainly.com/question/22995381

4 0

3 years ago