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Salsk061 [2.6K]
3 years ago
12

Allison is looking through a telescope at an object in space. The object looks like a very small planet, and it does not have a

tail. If the object is orbiting the Sun and not the Earth, what is Allison most likely looking at?
Physics
1 answer:
Verizon [17]3 years ago
8 0

Answer:

Allison is probably looking at the asteroid.

Explanation:

  • Asteroids are the giant gas balls of inner solar system that are present in the space.
  • Asteroids orbits around the sun in very irregular ans strange path unlike the other planets.
  • This is also the reason why it's called as the minor planets.
  • It could have been comet but if it had been a comets he must have seen the tail but asteroids do not have any tail like structure.
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A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed
mafiozo [28]

Answer:

0.6375 m/s

Explanation:

Let x be the distance of the man from the building

from the figure attached

initially the value of x=12

Given:

\frac{dx}{dt}=-1.7m/s

where the negative sign depicts that the distance of the man from the building is decreasing.

Now, Let The length of the shadow be = y

we have to calculate \frac{dy}{dt} when x=4

from the similar triangles

we have,

\frac{2}{12-x}=\frac{y}{12}    

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y=\frac{24}{12-x}

Differentiating with respect to time 't' we get

\frac{dy}{dt}=-\frac{24}{12-x}^2\frac{-dx}{dt}

or

\frac{dy}{dt}=\frac{24}{12-x}^2\frac{dx}{dt}

Now for x = 4, and \frac{dx}{dt}=-1.7m/s  we have,

\frac{dy}{dt}=\frac{24}{12-4}^2\times (-1.7)

or

\frac{dy}{dt}=-0.6375m/s

<u>here, the negative sign depicts the decrease in length and in the question it is asked the decreasing rate  thus, the answer is </u><u>0.6375m/s</u>

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