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3 years ago

14

A=vf-vi/t is the equation for calculating the acceleration of an object. write out the relationship shown in the equation using

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PLEASE I NEED HELP!! I'm timed!

20 points!

1 answer:

Lelechka [254]3 years ago

3 0

Basically it is the difference in velocity divided by the time it takes to make that change.

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What is the electric potential v due to the nucleus of hydrogen at a distance of 5.292×10−11 m ?

viktelen [127]

Answer: 27.21 V

Explanation:

The <u>electric potential</u> $V_{E}$ due to a point charge is expressed as:

$V_{E}=k\frac{q}{r}$

Where:

$k=9(10)^{9}\frac{Nm^{2}}{C^{2}}$ is the <u>electric constant</u>

$q=1.6(10)^{-19}C$ is the <u>electric charge of the hydrogen nucleus</u>, which is positive

$r=5.292(10)^{-11}m$ is the <u>distance</u>

Rewritting the equation with the known values:

$V_{E}=9(10)^{9}\frac{Nm^{2}}{C^{2}}\frac{1.6(10)^{-19}C}{5.292(10)^{-11}m}$

Finally:

$V_{E}=27.21 V$

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3 years ago

Earthquakes that originate beneath the ocean floor produce huge tidal waves called _____.

ololo11 [35]

Answer;

-Tsunami

Explanation;

-Tsunami is a series of large ocean waves (or "wave train") of extremely long wavelength and period, usually generated when a gigantic body of water, such as an ocean, is suddenly displaced on a massive scale by an underwater disturbance such as an earthquake occurring on or near the sea floor or a volcanic eruption.

-After a sudden displacement of a large water volume by seismic activity (earthquake), the ocean floor is raised or dropped and large tsunami waves can be formed by gravitational forces.

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2 years ago

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How do you appreciate sweating mechanism of human body to control the temperature of the body?

ehidna [41]

Explanation:

When the body temperature tends to rise, such as during physical exercise, the body begins to sweat. The sweat with high water content is secreted in the skin and when it evaporates into the environment, it cools the body. This is due to the property of water having high heat capacity. It carries with it a lot of heat per molecule (because water requires much energy – than most materials - for its temperature to rise by a degree) hence ideal for cooling. This is why on a hot day, sweating makes the skin feel cooler than the surrounding.

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3 years ago

You inherit these from your parents and these codes for the traits you have

Sever21 [200]

Genes. you inherit 50% from your mom and dad. I believe that is the answer....

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Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball tr

sashaice [31]

Okay, first off, the formula for Kinetic Energy is:

<em>KE = 1/2(m)(v)^2</em>

<em>m = mass</em>

<em>v = velcoity (m/s)</em>

Using this formula, we can then calculate the kinetic energy in each scenario:

1) KE = 1/2(100)(5)^2 = 1,250 J

2) KE = 1/2(1000)(5)^2 = 12,500 J

3) KE = 1/2(10)(5)^2 = 125 J

4) KE = 1/2(100)(5)^2 = 1,250 J

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