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Rudiy27
3 years ago
13

Which of the following best represents the speed of Halley's comet when it is nearest to Earth?

Physics
2 answers:
trasher [3.6K]3 years ago
5 0

Answer:

d. 1 \times 10^{5} kilometers per hour

Explanation:

Halley's comet is named after the astronomer Halley. This comet entered the inner solar system from the Kupier's belt.  It is very large in size. It appears every 75 or 79 years in the inner solar system and can be seen with the naked eye. Its orbit is elliptical in shape. It reflects the sun light, otherwise it is entirely dark and made up of volatile material, as observed

Gre4nikov [31]3 years ago
3 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Among the choices provided above the one that best represents the speed of Halley's comet when it is nearest to Earth is letter D which is <span>1 × 10^5 kilometers per hour. </span>
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MAXImum [283]

Answer:

The answer is I=70,513kgm^2

Explanation:

Here we will use the rotational mechanics equation T=Ia, where T is the Torque, I is the Moment of Inertia and a is the angular acceleration.

When we speak about Torque it´s basically a Tangencial Force applied over a cylindrical or circular edge. It causes a rotation. In this case, we will have that T=Ft*r, where Ft is the Tangencial Forge and r is the radius

Now we will find the Moment of Inertia this way:

Ft*r=I*a -> (Ft*r)/(a) = I

Replacing we get that I is:

I=(200N*0,33m)/(0,936rad/s^2)

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I=(1/2)*(m*r^2)

4 0
3 years ago
A marble rolls 269cm across the floor with a constant speed of in 44.1cm/s.
Marrrta [24]

Answer:

t = 6.09 seconds

Explanation:

Given that,

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We need to find the time interval of the marble. Speed is distance per unit time.

v=\dfrac{d}{t}\\\\\implies t=\dfrac{d}{v}\\\\t=\dfrac{269\ \text{cm}}{44.1\ \text{cm/s}}\\\\t=6.09\ s

Hence, the time interval of the marble is 6.09 seconds.

6 0
3 years ago
30 points must be a legitimate answer and correct answer or I will report
kupik [55]

Answer:

it's C

Explanation:

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