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Anna007 [38]
2 years ago
7

On a small planet, an astronaut uses a vertical

Physics
2 answers:
Salsk061 [2.6K]2 years ago
8 0

Answer:

<h2>2.00 N/kg approximately.</h2>

Explanation:

A gravitational flied is defined as the quotient between the gravitational force and the mass:

g=\frac{F}{m}

Replacing all given values, we have:

g=\frac{175N}{97.6kg}\\ g=1.96\frac{m}{s^{2} }

Therefore, the gravitational filed is approximately 2.00 N/kg.

sleet_krkn [62]2 years ago
6 0
Constant velocity means the netto force = 0, therefore F(gravity) = F(astronaut).
175N divided by 87,5kg = 2.00kg/N
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If two planets orbit a star, but planet B is twice as far from the star as planet A, planet A will receive ____ times the flux t
Tresset [83]

Answer:

The nearest plant (A) receives 4 times more radiation from the farthest plant

Explanation:

The energy emitted by the star is distributed on the surface of a sphere, whereby intensity received is the power emitted between the area of ​​the sphere

                I = P / A

               P = I A

The area of ​​the sphere is

               A = 4π r²

Since the amount of radiation emitted by the star is constant, we can write this expression for the position of the two planets

               P = I₁ A₁ = I₂ A₂

               I₁ / I₂ = A₂ / A₁

 Suppose index 1 corresponds to the nearest planet,

            r2 = 2 r₁

            I₁ / I₂ = r₁² / r₂²

            I₁ / I₂ = r₁² / (2r₁)²

            I₁ / I₂ = ¼

           4 I₁ = I₂

The nearest plant (A) receives 4 times more radiation from the farthest plant

7 0
3 years ago
TRUE or FALSE: During a collision between objects of different mass, there is a greater force applied to the less massive object
ddd [48]
If they are moving at the same speed then it would be true because the larger object would have more mass and would have more momentum then the smaller object that has less mass! Hope this helps!
4 0
2 years ago
Which statement about the dark nebulae is true?(A) They can be penetrated only with shorter waves, such as UV and x-ray.(B) They
TiliK225 [7]

Answer: (B) They can be penetrated only with longer wavelengths such as radio and infrared.

Explanation:

A dark nebula is a type of interstellar cloud with such a high density that it "hides" the light of the background stars.

It should be noted that these nebulae are composed mostly of hydrogen (the star's primary fuel), and the absence of light (in the visible range of the electromagnetic spectrum) is caused by the interstellar solid dust that constitutes the cloud, which is why they are also called absorption nebulae.

However, <u>if powerful telescopes that detect at long wavelengths, such as infrared and X-rays, it is possible to observe through these nebulae and even observe the existence of young stars.</u>

8 0
3 years ago
Approximately what percentage of the calories you take in every day are consumed by your brain's activity?
777dan777 [17]
It consumes about 20%
3 0
3 years ago
A car travels at an average speed of 60 km / h for 15 minutes. How far does the car travel in 15 minutes?
salantis [7]

Answer:

15km

Explanation:

Given parameters:

Average speed = 60km/hr

Time taken  = 15min

Unknown:

Distance  = ?

Solution:

The distance traveled can de derived using the expression below;

      Distance  = Average speed x time taken

Now let us convert the time to hr;

              60min = 1hr

              15min = \frac{15}{60}   = 0.25hr

Distance  = 60km/hr x 0.25hr  = 15km

6 0
2 years ago
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