3 years ago

Are momentum and kinetic energy conserved during an inelastic collision?

1 answer:

8 0

Energy and momentum are always conserved. Kinetic energy is not conserved in an inelastic collision though. And that is because it is converted to another form of energy

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How many visible stars does How many visible stars Taurus “the bull” have

dolphi86 [110]

Answer:

The Taurus "bull" is home to 500 stars, six of which are visible to the naked eye.

Explanation:

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3 years ago

The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm2 varies with time

Makovka662 [10]

Explanation:

We have,

Surface area, $A=2\ cm^2=0.0002\ m^2$

The current varies wrt time t as :

$q(t) = 4t^3 + 5t + 6$

(a) At t = 2 seconds, electrical charge is given by :

$q(t) = 4t^3 + 5t + 6\\\\q(2) = 4(2)^3 + 5(2) + 6\\\\q=48\ C$

(b) Current is given by :

$I=\dfrac{dq}{dt}\\\\I=\dfrac{d(4t^3 + 5t + 6)}{dt}\\\\I=12t^2+5$

Instantaneous current at t = 1 s is,

$I=12(1)^2+5=17\ A$

Current density is given by electric current per unit area.

$J=\dfrac{I}{A}\\\\J=\dfrac{(12t^2+5)}{0.0002}\\\\J=5000(12t^2+5)\ A/m^2$

Therefore, it is the required explanation.

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3 years ago

These electromagnetic waves are the most energetic:

Nady [450]

The answer to number 1 is D and the answer for the second one is 2
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3 years ago

In The United States how much more sugar is the average person consume each year that in 1970?

zmey [24]

In the 1970, the average American ate only 2 pounds of sugar a year. In 1970, we ate 123 pounds of sugar per year. Today, the average American consumes almost 152 pounds of sugar in one year. This is equal to 3 pounds (or 6 cups) of sugar consumed in one week!

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3 years ago

Which two statements correctly describe transmutation? O A. The parent and daughter elements are different. B. The atomic masses

Yakvenalex [24]

Answer:

A. and D.

Explanation:

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3 years ago