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3 years ago

15

What is velocity Write its formula

2 answers:

fenix001 [56]3 years ago

5 0

Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation
v = Δs/Δt.

stellarik [79]3 years ago

5 0

Answer:

Explanation:

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3 years ago

In a closed system, the volume of a gas is not related to the volume of its enclosure.

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4 years ago

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The volume of a cantaloupe is approximated by Upper V equals four thirds pi font size decreased by 5 r cubedV= 4 3π r3. The radi

GuDViN [60]

Answer:

68.445 cm³/s

Explanation:

Given:

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radius = 5.85 cm

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now

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$\frac{dV}{dt}=\frac{d(\frac{4}{3}\pi r^3)}{dt}$

or

$\frac{dV}{dt}=(\frac{4}{3}\pi )3r^2\frac{dr}{dt}$

now, substituting the value of r (i.e at r = 5.85cm) in the above equation, we get:

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or

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4 years ago

g In a certain binary-star system, each star has the same mass which is 8.2 times of that of the Sun, and they revolve about the

Mademuasel [1]

To solve this problem it is necessary to apply the concepts related to the Third Law of Kepler.

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$m_s = 1.989*10^{30}$

The radius between the earth and the sun is given by

$r = 149.6*10^9m$

From the mentioned star it is known that this is 8.2 time mass of sun and it is 6.2 times the distance between earth and the sun

Therefore:

$m = 8.2*1.989*10^{30}$

$d = 6.2*149.6*10^6$

Substituting in Kepler's third law:

$T^2 = \frac{4\pi^2 d^3}{2}$

$T^2 = \frac{4\pi^2(6.2*149.6*10^9)^3}{2(6.674*10^{-11} )(8.2*1.989*10^30 )}$

$T=\sqrt{\frac{4\pi^2(6.2*149.6*10^9)^3}{2(6.674*10^{-11} )(8.2*1.989*10^30)}}$

$T = 120290789.7s$

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7 0

3 years ago