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choli [55]
3 years ago
7

work done as mass 1 moves to mass 2. the gravitational force between two point masses separated by a distance r is proportional

to
Physics
1 answer:
pav-90 [236]3 years ago
3 0

Answer:

gravitational force

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What is a circumpolar star? A)a star that is close to the north celestial pole a star that is close to the south celestial pole
Vedmedyk [2.9K]

Answer:

A star that always remains above your horizon and appears to rotate around the celestial pole.

Explanation:

A) a star that is close to the north celestial pole: a circumpolar star could be close to the north celestial pole, but this answer is omitting the south celestial pole.

B) a star that is close to the south celestial pole: a circumpolar star could be close to the south celestial pole, but this answer is omitting the north celestial pole.

C) a star that always remains above your horizon and appears to rotate around the celestial pole: this is the definition of a circumpolar star.

D) a star that makes a daily circle around the celestial sphere: every star does this.

E) a star that is visible from the Arctic or Antarctic circles : there are many starts visible from there that are not circumpolar.

6 0
3 years ago
the loudness of a person's voice depends on the A. force with which air rushes across the vocal folds B. strength of the intrins
blsea [12.9K]

Answer: A. force with which air rushes across the vocal folds

Explanation:

The human voice is produced in the larynx, whose essential part is the glottis. This is how the air coming from the lungs is forced during expiration through the glottis, making its two pairs of vocal folds to vibrate.

It should be noted that this process can be consciously controlled by the person who speaks (or sings), since the variation in the intensity of the sound of the voice depends on the strength of the breath.

5 0
3 years ago
Which of the following best describes a property of water?
stiks02 [169]

Correct answer is option C.

Remaining liquid over a wide temperature range  

Other options are invalid.

3 0
3 years ago
Read 2 more answers
A heavy boy and a lightweight girl are balanced on a massless seesaw. The boy moves backward, increasing his distance from the p
slava [35]

Answer:

b. The side the boy is sitting on will tilt downward

Explanation:

Initially, the seesaw is balanced because the torque exerted by the boy is equal to the torque exerted by the girl:

\tau_b = \tau_g\\W_b d_b = W_g d_g

where

Wb is the weight of the boy

db is the distance of the boy from the pivot

Wg is the weight of the girl

dg is the distance of the girl from the pivot

When the boy moves backward, the distance of the boy from the pivot ((d_b) increases, therefore the torques are no longer balanced: the torque exerted by the boy will be larger, and therefore the side of the boy will tilt downward.

5 0
3 years ago
A 0.850 kg mass is placed on a
densk [106]

Answer:

Picture

Explanation:

I am trying to solve this Q

but not sure if this a correct answer

or not.

Hope this helps.

5 0
3 years ago
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