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3 years ago

There is an increase in energy in all of the following EXCEPT *

Physics

1 answer:

mars1129 [50]3 years ago

5 0

Answer:

Freezing

Explanation:

I am pretty sure that the energy particles slow down when they freeze, making it the only one in which energy does NOT increase. Hope I helped.

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The parking brake on a 1200kg automobile has broken, and the vehicle has reached a momentum of 7800kg.M/s. What is the velocity

AysviL [449]

Ok so the equation for momentum is:
v=p/m

So you would do:
7800/1200=6.5

So the answer is:
6.5 m/s

Hope this helps :)

6 0

3 years ago

Explain how forces of attraction and repulsion exist within an atom

Stels [109]

Answer:

Oppositely charged particles attract each other, while like particles repel one another. Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.

Explanation:

7 0

3 years ago

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If the charges attracting each other in the preceding problem have equal magnitudes,show that the magnitude of each charge is 2.

Schach [20]

Answer:

The magnitude of each charge is $2.82\times10^{-6}\ C$

Explanation:

Suppose the two point charges are separated by 6 cm. The attractive force between them is 20 N.

We need to calculate the magnitude of each charge

Using formula of force

$F=\dfrac{kq^2}{r^2}$

Where, q = charge

r = separation

Put the value into the formula

$20=\dfrac{9\times10^{9}\times q^2}{(6\times10^{-2})^2}$

$q^2=\dfrac{(6\times 10^{-2})^2\times20}{9\times10^{9}}$

$q=\sqrt{\dfrac{(6\times 10^{-2})^2\times20}{9\times10^{9}}}$

$q=2.82\times10^{-6}\ C$

Hence, The magnitude of each charge is $2.82\times10^{-6}\ C$

6 0

3 years ago

The drawing on the right shows a man (mass = 70kg) and the child (mass = 35 kg) push each other apart. The man moves away with a

Pepsi [2]

Answer:

<h2>Hope it would help you.</h2>

3 0

3 years ago

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Scientists follow specific processes in order to determine valid explanations and conclusions from observations. David observed

vaieri [72.5K]

David doesn't need to do anything at all. His explanation has already
been verified. He saw lights in the sky. He doesn't know what they are.
Therefore, by definition, they are UFOs ... Unidentified Flying Objects.
Period. End of discussion.

Huge numbers of unidentified things have been observed flying over
Roswell during the past many years. Also over Toronto, Toledo, Tulsa,
and Texarkana. In every single case, somebody didn't know what they
were. Isn't that a mysterious "coincidence" ? Oooweeooo ...

Well I'm not buying it. Put that together with all the blood moons lately, and
it becomes obvious that the end times are near. Somebody somewhere knows
more than they're letting on, and all of them are hiding the truth from us.

6 0

3 years ago

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