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mote1985 [20]
3 years ago
14

Mischka is an amateur astronomer. Using her telescope, she looks out past the Earth’s atmosphere and observes an object with a l

ong, bright, cloud-like tail behind it. What is Mischka observing?
an asteroid
a meteorite
a comet
a meteoroid
Physics
2 answers:
alexgriva [62]3 years ago
6 0

Answer: a comet

Explanation:  

A comet is composed of rock, ice dust and frozen gases. Comets generally reside in the outskirts of the solar system i.e. Kuiper belt and Oort cloud.

When comets enter the solar system, the frozen gases sublimate and form the atmosphere of the comet. It is known as coma. As the comet nears the Sun, the coma expands as more frozen gases sublimate and extends backwards due to solar wind. A huge tail composed of gases and dust is formed and can be observed through telescope from Earth. This must be observed by Mischka.

topjm [15]3 years ago
3 0
A comet is long and also bright, which has a blue-ish color to it. 

Best Regards, Mike
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3 years ago
Which describes the position on a horizontal number line
Savatey [412]

Answer:

It is formed by a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.

Explanation:

3 0
3 years ago
An electric furnace runs 13 hours a day to heat a house during January (31 days). The heating element has a resistance of 7.2 an
liq [111]

Answer:

cost of running the furnace during January is $5619.62

Explanation:

given data

runs a day = 13 hours

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resistance = 7.2 ohm

current = 16.7 A

cost of electricity = $0.10/kWh

to find out

cost of running the furnace during January

solution

first we get her power consumed by furnace that is

Power consumed = \frac{I^2}{R}  ........1

put here value we get

Power consumed = \frac{16.7^2}{7.2}

Power consumed = 38.7347 W

and

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Power consumed by furnace in one hour is = Power consumed × 3600

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Power consumed by furnace in one hour is 139.445kWh

and

Power consumed by furnace in the month of January is

Power consumed by furnace in the month of January = 139.445kWh × 13 hours × 31 days

Power consumed by furnace in the month of January = 56196.335 kWh

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cost of running the furnace during January is = $0.10/kWh × 56196.335 kWh

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4 0
3 years ago
Read 2 more answers
Two charged objects separated by some distance attract each other. If the charges on both objects are doubled with no change in
Serggg [28]

Answer:

(a) The force between them quadruples

Explanation:

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F_1=\frac{Kq_1q_2}{r^2}

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k is coulomb's constant

q₁ is the charge on the first object

q₂ is the charge on the second object

r is the distance between the two objects

When the charges on both objects are doubled, then;

q₁ = 2q₁

q₂ = 2q₂

Force between the two charged objects will become

F_2 = \frac{K2q_12q_2}{r^2} =  \frac{4Kq_1q_2}{r^2} = 4(\frac{Kq_1q_2}{r^2}) = 4F_1

Therefore, the force between them quadruples

4 0
3 years ago
how do u calculate the kinetic energy of a ball of mass 0.25kg being kicked vertically upwards with a speed of 5m/s​
vfiekz [6]

Answer:

3.125J

Explanation:

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6 0
3 years ago
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