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3 years ago

8

Write the formula for a partially inelastic collision and explain what all 6 variables are and the unit each is measured in. Sta

te Newton’s 3 rd Law of Motion. State the Law of Conservation of Momentum and explain it in your own way.

1 answer:

Archy [21]3 years ago

5 0

Answer:

i don`t get it

Explanation:

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Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. What is Helen most l

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D

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Got it right on the edge quiz

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Due to the earth's rotation, a person would be traveling faster at the equator than they would at a position halfway from the eq

Kisachek [45]

Answer:

False

Explanation:

It is actually the exact opposite.

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What is the correct answer?

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If it requires 4.5 J of work to stretch a particular spring by 2.3 cm from its equilibrium length, how much more work will be re

saveliy_v [14]

Answer:

$\Delta W=24.1162\ J$

Explanation:

Given:

work done to stretch the spring, $W=4.5\ J$

length through which the spring is stretched beyond equilibrium, $\Delta x=2.3\ cm=0.023\ m$

additional stretch in the spring length, $\delta x=3.5\ cm=0.035\ m$

<u>We know the work done in stretching the spring is given as:</u>

$W=\frac{1}{2} \times k.\Delta x^2$

where:

k = stiffness constant

$4.5=0.5\times k\times 0.023^2$

$k=17013.2325\ N.m^{-1}$

Now the work done in stretching the spring from equilibrium to ( $\Delta x+\delta x$ ):

$W'=0.5\times k.(\Delta x+\delta x)^2$

$W'=0.5\times 17013.2325\times 0.058^2$

$W'=28.6162\ J$

So, the amount of extra work done:

$\Delta W=W'-W$

$\Delta W=28.6162-4.5$

$\Delta W=24.1162\ J$

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3 years ago

A student runs 100 meters in 11 seconds. What is the speed of the student?

GarryVolchara [31]

Speed = distance / time

speed = 100 / 11

speed = 9.09m/s

to get rid of meters and get miles you want to multiply by 1 mile then divide by 1609 meters. to get hours, you times the amount of seconds in an hour (3600) and divide by 1 hour

9.09m/s × 1mile / 1609m × 3600s / 1 hour = 20.3 miles / hour

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