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larisa [96]
4 years ago
10

Which of the following objects is usually the smallest?

Physics
2 answers:
Stels [109]4 years ago
8 0
I would say comet is the smallest  and the sun is the biggest 
Deffense [45]4 years ago
3 0

b. comets

Although comets appear very large when they are near the Sun because of the large dust cloud that follows behind them, they are actually the smallest of the objects listed.

Comets typically have a diameter of less than 6 miles, which is much smaller than the typical diameter of the other objects listed above.

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What is the magnitude of the net force acting on a 2.0 x10^3 kilogram car?
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Answer:  
Acceleration= final velocity - initial velocity / time
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4 years ago
A very small source of light that radiates uniformly in all directions produces an electric field amplitude of 8.45 V/m at a poi
Mandarinka [93]

Answer:

4.43 kW

Explanation:

Since Intensity I = P/A = E²/2cμ₀ where P = Power, A = Area = 4πr² where r = distance from source = 61 m and E = electric field amplitude = 8.45 V/m.

P = E²A/2cμ₀ = E²4πr²/2cμ₀ = 2πE²r²/cμ₀

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6 0
3 years ago
How far will a free falling object fall in 8.7 secs if it started from rest? Remember acceleration is negative for free fall. Do
sleet_krkn [62]

Answer:

h~=371.26m

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when an object falls we use the equations of accelerated motion. There is only one that gives distance.

x = ut +  \frac{1}{2} a {t}^{2}

Since we have no initial velocity (started from rest) we can get rid of the (ut) term

where a we substitute g (gravitational acceleration, constant for given heights and almost 9.81m/s^2).

h =  \frac{1}{2} g {t}^{2}  =  \frac{1}{2}  \times 9.81 \times  {8.7}^{2}  = 371.26m

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Read 2 more answers
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