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3 years ago

Why are asteroids and comets important to our understanding of solar system history?

Physics

1 answer:

Alecsey [184]3 years ago

8 0

Answer:

Explained

Explanation:

It is widely believed among the space scientist that Asteroids and comets are the remains of the material that has formed our solar system. By studying Asteroids and comets can get information pre era of our solar system, because the asteroids came being at the start of the solar system. The chemical composition, the size and the process of formation of proto stellar nebula. The impact of collision of asteroid on Earth lead to the extinction of Dinosaurs. Previously it was believed that water come on Earth because of comets, but later proved that water come into being on Earth because of Asteroids.

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~~~~~NEED HELP ASAP~~~~~

Romashka-Z-Leto [24]

Answer:

Centripetal Acceleration 18.75 m/s^2, Rotational Kinetic Energy 843.75 J

Explanation:

a Linear acceleration (we cant find tangential acceleration with the givens so we will find centripetal)

a= ω^2*r

ω= 300rev/min

convert into rev/s

300/60= 5rev/s

a= 18.75m/s^2

b) use Krot= 1/2 Iω^2

plug in gives

1/2(30*2.25)(25)= 843.75 J

8 0

2 years ago

In a cup of liquid water when would water molcules stop moving

Mandarinka [93]

The the Water turns to ice. But even then they would never truly stop moving.<span />

3 0

3 years ago

Read 2 more answers

Alex787 [66]

Explanation:

Volume of 10 coins = 100ml - 75ml = 25ml

Volume of 1 coin = 25ml / 10 = 2.5ml

The average volume of each coin is 2.5ml.

8 0

2 years ago

Read 2 more answers

Which statement about the positive and negative value of speed compared to velocity is true?

mestny [16]

D is the answer
Velocity maybe negative or positive
while speed is always positive

3 0

3 years ago

An electron moves a 2.0x10^6 meter per the second perpendicular to a magnetic field having a flux density of 2 teslas. What is t

Darina [25.2K]

Answer:

F_B = 6.4*10^-13 N

Explanation:

The magnetic force on the electron, generated by the motion of the electron and the magnetic field is given by:

$F_B=qv\ X\ B$

q: electron charge = 1.6*10^{-19}C

v: speed of the electron = 2.0*10^6 m/s

B: magnitude of the magnetic field = 2T

However, the direction of B and v are perpendicular between them. So, the angle between vectors is 90°. The magnitude of the magnetic force is:

$|F_B|=qvBsin90\°=qvB$

You replace the values of q, v and B in the last equation:

$|F_B|=(1.6*10^{-19}C)(2.0*10^6m/s)(2T)\\\\|F_B|=6.4*10^{-13}\ N$

hence, the magnetic force on the electron is 6.4*10^-23 N

6 0

3 years ago