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Maru [420]
4 years ago
15

A car travels at a constant speed around a circular trackwhose

Physics
1 answer:
Mashutka [201]4 years ago
8 0

Answer:

a = 0.77 m/s^2

Explanation:

The centripetal acceleration is given as

a = \frac{v^2}{R}

The velocity of the car can be calculated using the circumference of the track and the period of the car.

2\pi R = v T\\2\pi 2.6 = v 360\\v = 0.045 ~km/s = 45~m/s

So, the acceleration is

a = \frac{45^2}{2.6\times 10^3} = 0.77~m/s^2

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Answer:

C

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The sun has rotated causing the shadow to reflect.

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3 years ago
Since the moon orbits the earth approximately every 27 days, there is a lunar eclipse approximately every 27 days.
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Answer:

No ! its False

Explanation:

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3 years ago
Brainliest if correct Question 10 of 10
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Answer:

D thermal energy moves from the marshmallow to your fingers as you touch the marshmallow

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In 1977 off the coast of Australia, the fastest speed by a vessel on the water
fenix001 [56]

Answer: 154.08 m/s

Explanation:

Average acceleration a_{ave} is the variation of velocity  \Delta V over a specified period of time  \Delta t:

a_{ave}=\frac{\Delta V}{\Delta t}}

Where:

a_{ave}=1.80 m/s^{2}

\Delta V=V_{f}-V_{o} being V_{o}=0 the initial velocity and V_{f} the final velocity

\Delta t=85.6 s

Then:

a_{ave}=\frac{V_{f}-V_{o}}{\Delta t}}

Since V_{o}=0:

a_{ave}=\frac{V_{f}}{\Delta t}}

Finding V_{f}:

V_{f}=a_{ave} \Delta t

V_{f}=(1.80 m/s^{2})(85.6 s)

Finally:

V_{f}=154.08 m/s

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A cyclist covers a distance of 750m in 2 min 30sec what is the speed in km/hr of the cyclist?​
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Answer:

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