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3 years ago

1) Radiation from the sun can be deflected or contained by

Physics

1 answer:

earnstyle [38]3 years ago

7 0

Answer:

Explanation:

light colors deflect ligjt

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The space shuttle is located exactly half way between the earth and the moon. Which statement is true regarding the gravitationa

sdas [7]

Answer:

The correct answer is option B)

Explanation:

Considering the given question as -

The space shuttle is located exactly half way between the earth and the moon. Which statement is true regarding the gravitational pull on the shuttle? A) The moon pulls more on the shuttle. B) The earth pulls more on the shuttle. C) Both are equal due to equal distances. D) Both are equal due to the mass of the shuttle.

We know that gravitational pull (F) between any two bodies of mass $M_{1}$ and $M_{2}$ is given by -

F = $\dfrac{GM_{1}M_{2} }{r^{2} }$ where 'r' is the distance between the two bodies.

Let ,

$M_{e}$ : Mass of the earth

$M_{m}$ : Mass of the moon

m : Mass of the satellite

$r_{e}$ : Distance of satellite from earth

$r_{m}$ : Distance of satellite from moon

Given that $r_{e}$ = $r_{m}$

Let $r_{e}$ = $r_{m}$ =r

Force on satellite by the earth is -

$F_{e}$ = $\dfrac{GM_{e}m }{r^{2} }$

Force on satellite by the moon is -

$F_{m}$ = $\dfrac{GM_{m}m }{r^{2} }$

∵ Mass of earth ( $M_{e}$ ) > Mass of moon ( $M_{m}$ )

∴ $F_{e}$ > $F_{m}$

∴ The gravitational pull of earth on satellite is more than that of the moon.

4 0

4 years ago

The number of revolutions of two pulleys is inversely proportional to their diameters. If a 24-inch diameter pulley making 400 r

Fed [463]

Answer:

C) 1200 rpm

Explanation:

$D_1$ = Diameter of bigger pulley = 24 inch

$D_2$ = Diameter of smaller pulley = 8 inch

$N_1$ = Speed of bigger pulley = 400 rpm

$N_2$ = Speed of smaller pulley

The relation between revolutions per minute and diameter is that they are inversely proportional.

$\frac{N_1}{N_2}=\frac{D_2}{D_1}\\\Rightarrow \frac{400}{N_2}=\frac{8}{24}\\\Rightarrow N_2=\frac{24\times 400}{8}\\\Rightarrow N_2=1200\ rpm$

The number of revolutions per minute of the smaller pulley is 1200 rpm

7 0

3 years ago

Which state of matter contains particles that move slightly in a fixed posistion

Pavlova-9 [17]

Solid moves slightly in a fixed position

6 0

4 years ago

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Which wave causes the medium to vibrate only in a direction parallel to the wave’s motion?

andreyandreev [35.5K]

When the vibration is in a direction parallel to wave's motion that is a Longitudinal wave (C).

But When the vibration is in a direction perpendicular to wave's motion then it is Transverse wave.

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4 years ago

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2H2+O2---> 2H2O can be classified as what type of reaction?

alisha [4.7K]

I believe the answer is B

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4 years ago