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harkovskaia [24]
3 years ago
8

Which planet was almost massive enough to have become a star?

Physics
2 answers:
Lostsunrise [7]3 years ago
4 0
Jupiter was almost big enough but failed to be a star
ololo11 [35]3 years ago
3 0
Jupiter ............................................
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Find the magnitude of a fourth force on the stone that will make the vector sum of the four forces zero.
Tanya [424]
100cos30° + 80cos120° + 40cos233° + Dx = 0 
<span>Dx = -22.53 N </span>

<span>y components: </span>
<span>100sin30° + 80sin120° + 40sin233° + Dy = 0 </span>
<span>Dy = -87.34 N </span>

<span>magnitude of D: </span>
<span>sqrt[(-22.53)² + (-87.34)²] </span>
<span>90.2 N </span>

<span>direction of D: </span>
<span>arctan[(-87.34)/(-22.53)] </span>
<span>75.5° ref, but since Dx and Dy are both negative, we know this vector is in QIV: </span>
<span>360 - 75.5° = 284.5°</span>
7 0
3 years ago
A ball is thrown horizontally from the top of a building 54 m high. The ball strikes the ground at a point 35 m horizontally awa
Ivanshal [37]

Answer:

V=34.2 m/s

Explanation:

Given that

Height , h= 54 m

Horizontal distance , x = 35 m

Given that , the ball is thrown horizontally , therefore the initial vertical velocity will be zero.

In vertical direction :

We know that

V^2_y=U^2_y+2 g h

Now by putting the values in the above equation we got

V^2_y=U^2_y+2 g h

V^2_y=0^2+2\times 9.81 \times 54

Assume g= 9.81 m/s^2

Thus

V^2_y=1059.48

V_y=\sqrt{1059.48}\ m/s

V_y=32.54 m/s

We also know that

V_y=U_y+ g\times t

32.54=9.81\times t

t=\dfrac{32.54}{9.81}=3.31\ s

In horizontal direction :

x=U_x\times t

U_x=\dfrac{35}{3.31}=10.54\ m/s

Thus the resultant velocity

V=\sqrt{V^2_y+U^2_x}

V=\sqrt{32.54^2+10.54^2}=34.2\ m/s

V=34.2 m/s

Therefore the velocity will be 34.2 m/s.

5 0
4 years ago
How do convection cells in Earth's atmosphere cause high and low pressure belts?
seropon [69]
Areas of rising air causes low air pressure areas and <span>Areas of sinking air are areas of high air </span>pressure
6 0
4 years ago
Two atoms that are isotopes will have a different number of what​
BigorU [14]

Answer:

different number of mass numbers.

Explanation:

isotopes are atoms of the same element having the same atomic number but different mass numbers due to different number of neutrons.

7 0
3 years ago
What's an interesting fact about Aristotle?
gladu [14]

Answer:

Image result for What's an interesting fact about Aristotle?

Interesting Aristotle Facts: 1-5

Aristotle was born somewhere around 384 BCE. ...

His father was Nicomachus. ...

Nicomachus died when Aristotle was a young boy. ...

After the death of Nicomachus, Proxenus – husband of Aristotle's sister Arimneste, became the guardian of young Aristotle.

8 0
3 years ago
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