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vampirchik [111]

2 years ago

13

Please please please I need someone who knows mathematics and someone who knows biology and someone who knows physics, very, ver

y necessary

1 answer:

jenyasd209 [6]2 years ago

4 0

Answer:

ok then here i am lol

Explanation:

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Two stars have the same radius but have very different temperatures. the red star has a surface temperature of 3,000 k and the b

dangina [55]

I would say that insofar as the two stars temperatures are presumably closely related to their luminosity, that the blue star at 156,100 k compared to 3000k for the red star then the blue star has a luminosity of 52 times that of the red star.

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3 years ago

A ball is thrown vertically up ward with a velocity of 25m/s. a/how fast was it moving after 2sec?

Shalnov [3]

Answer:

12.5

Explanation:

given

distance=25

time=2sec

required

=speed

solution

=v=s/t

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2 years ago

A very flexible helium-filled balloon is released from the ground into the air at 20. ∘C. The initial volume of the balloon is 5

koban [17]

Answer:

V = 38.0 L

Explanation:

As we know that number of moles will remains conserved inside the balloon

so we will have

$moles = \frac{PV}{RT}$

here we have

$\frac{P_1V_1}{RT_1} = \frac{P_2V_2}{RT_2}$

now we have

$P_1 = 760 mm Hg$

$P_2 = 76 mm Hg$

$V_1 = 5.00 L$

$T_1 = 20^o C = 293 K$

$T_2 = -50^o C = 223 K$

$\frac{(760mm Hg)(5L)}{R(293)} = \frac{(76mm Hg)(V)}{R(223)}$

$V = 38.0 L$

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3 years ago

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A hard drive has 250 gigabytes of storage?

Dafna11 [192]

A. 0.25 terabytes
b. 2.5e + 17

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2 years ago

A 25 kg cart has 125 kg*m/s of momentum. How fast is the car going?

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Therefore, the car is moving with a velocity of 5 m/s.

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