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kkurt [141]
3 years ago
14

Define average velocity and instantaneous velocity when are they same ​

Physics
1 answer:
Vlada [557]3 years ago
5 0

Answer:

Look to the explanation

Explanation:

<u><em>Average velocity:</em></u> is the average rate of change of displacement with

respect to time

Average velocity is a measure for distance traveled in a given time

We can calculate the average velocity by the rule v=\frac{s}{t}

where s is the displacement and t is the time

<u><em>Instantaneous velocity:</em></u> is the velocity of an object in motion at a

specific point (x , t)

instantaneous velocity is the limit of velocity as the change in time

approaches zero

We can calculate the instantaneous velocity by the rule v=\frac{ds}{dt}

<u>Average velocity</u> is <u>equal</u> to the <u>instantaneous velocity</u> when

<u>acceleration</u> is <u>zero</u>

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a length 650 cm of thin thread wraps around a cylinder exactly 30 times calculate the circumference and the radius of the cylind
Eduardwww [97]

Answer:

circumference= 65/3  cm = 21.67 cm

radius R = 3.45 cm

Explanation:

To calculate the length of the circumference of the cylinder, we divide 650 cm by 30 (the number of times it wrapped exactly around it)

length of circumference= 65/3  cm = 21.67 cm

now use the formula of the circumference length to find the radius (R):

circumference length = 2 * pi * R

65/3 = 2 * pi * R

R = 65 / (6 pi)

R = 3.45 cm

5 0
3 years ago
If the torque on an object adds up to zero Group of answer choices the object is at rest. the object cannot be turning. the obje
garik1379 [7]

Answer:

the body has linear acceleration, but cannot rotate

Explanation:

Let's analyze the system

If the torque is zero, the two forces are the same magnitude, but applied to each side of the body in such a way that the torque cancels the punch of the other. Therefore the body cannot turn

The two forces go in the same direction so the object can have linear acceleration

The object is at rest because it has a force in the same direction, but in the opposite direction.

therefore the correct answer is:

the body has linear acceleration, but cannot rotate

8 0
3 years ago
Consider a turntable to be a circular disk of moment of inertia It rotating at a constant angular velocity ωi around an axis thr
Rom4ik [11]

Answer:

Note: Angular momentum is always conserved in a collision.

The initial angular momentum of the system is

L = ( It ) ( ωi )

where It = moment of inertia of the rotating circular disc,

ωi = angular velocity of the rotating circular disc

The final angular momentum is

L = ( It + Ir ) ( ωf )

where ωf is the final angular velocity of the system.

Since the two angular momenta are equal, we see that

( It ) ( ωi ) = ( It + Ir ) ( ωf )

so making ωf the subject of the formula

ωf = [ ( It ) / ( It + Ir ) ] ωi

Explanation:

7 0
3 years ago
What scientific instrument is sensitive enough to detect a planet transiting a star on the Kepler Spacecraft?
siniylev [52]

<h3>SCIENTIFIC INSTRUMENT</h3>

==============================

\large \sf \underline{Question:}

  • What scientific instrument is sensitive enough to detect a planet transiting a star on the Kepler Spacecraft?

==============================

\large \sf \underline{Answer:}

\qquad \qquad\huge \bold {Photometer}

==============================

\large \sf \underline{Explanation:}

  • A photometer is an instrument that measures and quantifies the brightness of a celestial body.

==============================

<h3>Mutual Information:</h3>

  • brainly.com/question/17246738

==============================

6 0
2 years ago
The ______ describes the height or the wave measured from the central axis
stiv31 [10]

Answer:

Amplitude

Explanation:

4 0
3 years ago
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