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3 years ago

While no one knows why, astronomers do now know that the solar nebula has ___________?

2 answers:

6 0

While no one knows why, astronomers do now know that the solar nebula has collapsed. Scientists believed that our Solar system was made when gas and dust cloud was being disturbed by an explosion of supernova. Due to pressure, this cloud collapsed.

arsen [322]3 years ago

3 0

Answer:

collapsed

Explanation:

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A hiker walls 9.4 miles at an angle of 60 degrees south of west. Find the west and south components of the walk

zheka24 [161]

Explanation:

Given that, a hiker walls 9.4 miles at an angle of 60 degrees south of west. We need to find the west and south components of the walk.

From the attached figure, it is clear that, the west component of the walk is given by :

$W=9.4\times cos(60)=4.7\ miles$

The south component of the walk is given by :

$S=9.4\times sin(60)=8.14\ miles$

So, the west and south components of the walk are 4.7 miles and 8.14 miles respectively. Hence, this is the required solution.

7 0

3 years ago

2. Sally put her mug of coffee on the table. The mug has a mass of 1 kg. if the pressure

egoroff_w [7]

We have,

The mass of sally's mug is 1 kg
The pressure appliedby the mug is 1100 pascal.

We know that,

Pressure = Force/Area

As, we already have the value of pressure, let's calculate that of force now;

F = ma
F = 1 × 9.8 { Acceleration due to gravity, let's round off it to 10}
F = 10 N

Just put all the values in the formula now;

P = F/A
1100 = 10 / A
1100/10 = A
110 m² = A

As, it is already mention that we need to find the radius of the mug, it is obviously a circular base.

We know that,

Surface area = Circumference

So, let's solve it;

Circumference = 2πr
110 = 2 × 22/7 × r
110 × 7/2 × 22 = r
5 × 7 = r
35 cm = r

Thus, the radius of the circle is 35 cm.

7 0

3 years ago

Fish are not able to regulate their body temperature by producing heat.

4vir4ik [10]

Answer:

evaporating water from its skin

6 0

3 years ago

Read 2 more answers

An object with more inertia is both harder to _____ and to _______ ...?

Aleks [24]

An object with more inertia is both harder to start and to stop. The heavier (or more mass) of the object - harder to start & stop. For instance, a large rock vs. small rock. Large rock harder to get rolling & harder to stop as compared to smaller rocks. Hope this answers the question.

4 0

3 years ago

Estimate the average power output of the sun, given that about 1350 w/m2 reaches the upper atmosphere of the earth.

fenix001 [56]

the average power output of the sun is 3.8 × $10^{26}$ W given that about 1350 w/m2 reaches the upper atmosphere of the earth.