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8_murik_8 [283]
3 years ago
7

Question 7 of 10

Physics
2 answers:
astra-53 [7]3 years ago
8 0
Answer D is an example of melting
gayaneshka [121]3 years ago
3 0
D since the ice cube, which is a solid, melts and forms a puddle on the counter, now a liquid. This process is called melting.
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Most people will experience hyposmia at some point in their life.<br> OA True<br> OB. False
suter [353]

Answer:

False

Explanation:

it is very rare to get hyposmia

5 0
3 years ago
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Calculate the power required of a 60-kg person who climbs a tree 5 meters high in 10 seconds.
Alina [70]

Answer:

Explanation:

Power = Energy/time

-Don't have energy so I'm gonna solve for it

Gravitational Potential Energy = mass x gravity x height

= 60 kg x 9.8 m/s2 x 5m

= 2940 J

Power = Energy/time

=2940 J/10 s

= 294 W

3 0
2 years ago
Gravity has traditionally been defined as a force of attraction between things that have what
ludmilkaskok [199]

Answer:

mass

Explanation:

8 0
3 years ago
(a) What is the escape speed on a spherical asteroid whose radius is 545 km and whose gravitational acceleration at the surface
Keith_Richards [23]

Answer:

1777.92 m/s

Explanation:

R = Radius of asteroid = 545 km

M = Mass of planet

g = Acceleration due to gravity = 2.9 m/s²

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

Acceleration due to gravity is given by

g=\dfrac{GM}{R^2}\\\Rightarrow M=\dfrac{gR^2}{G}

The expression of escape velocity is given by

v=\sqrt{\dfrac{2GM}{R}}\\\Rightarrow v=\sqrt{\dfrac{2G}{R}\dfrac{gR^2}{G}}\\\Rightarrow v=\sqrt{2gR}\\\Rightarrow v=\sqrt{2\times 2.9\times 545000}\\\Rightarrow v=1777.92\ m/s

The escape speed is 1777.92 m/s

3 0
3 years ago
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Which of the following statements about the motion of planetary satellites is true? ^^^
pychu [463]
<span> Planetary satellites can orbit their planet in the same direction as the planet's rotation, or in the opposite direction.</span>
5 0
3 years ago
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