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3 years ago

Fill in the blank. _______________, not velocity, is used to calculate the average acceleration.

Physics

2 answers:

Ainat [17]3 years ago

8 0

Explanation:

Calculating acceleration is complicated if both speed and direction are changing or if you want to know acceleration at any given instant in time. However, it’s relatively easy to calculate average acceleration over a period of time when only speed is changing. Then acceleration is the change in velocity (represented by Δv) divided by the change in time (represented by Δt):

acceleration=ΔvΔt

ArbitrLikvidat [17]3 years ago

4 0

Answer:

speed

Explanation:

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weqwewe [10]

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Explanation:

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3 years ago

What factor accounts for the fact that egg floats in salt water

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3 years ago

The uncertainty in the position of an electron along an x axis is given as 53 pm, which is about equal to the radius of a hydrog

Jobisdone [24]

To solve this problem it is necessary to apply the concepts related to the Heisenberg's uncertainty principle. Under this principle we understand the relationship that the minimum range of error in position (x) times the minimum range of error in momentum (p) is, at a minimum, about equal to the Planck constant, mathematically that is,

$\Delta p = \frac{h}{\Delta x}$

Replacing with our values we have,

$\Delta p = \frac{6.63*10^{-34}J\cdot s}{2\pi (53*10^{-12}m)}$

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Therefore the least uncertainty in any simultaneous measurement of the momentum component px of this electron is $1.99*10^{-24} kg\cdot m/s$

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3 years ago

The maximum acceleration a pilot can stand without blacking out is about 7.0 g. In an endurance test for a jet plane's pilot, wh

steposvetlana [31]

Answer:

$v=54.00m/s$

Explanation:

7.0g is $7\times$ the acceleration due to gravity.

Given that $g=7\times9.8m/s^2$ , acceleration can be calculated as:

$a=7\times9.8m/s^2\\a=68.6m/s^2$

Since circular motion is involved and our radius of curvature is given as, $r=\frac{85}{2}m$ , <em>centripetal acceleration </em>is given by the formula: $a=v^2/r$ .

Make $v^2$ subject of the formula to find $v$ :

$a=v^2/r\\v^2=ar=68.6\times(85/2)\\v^2=2915.5\\v=\sqrt{2915.5}\\v=54.00m/s$

The maximum speed of the pilot is $54m/s$

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4 years ago