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3 years ago

What kind of energy involves the flow of negative charges?

Physics

1 answer:

german3 years ago

3 0

Answer: static electricity

Explanation: The movement of charged particles through a wire or other medium is called current or electricity. There is also static electricity, which results from an imbalance or separation of the positive and negative charges on an object. Static electricity is a form of electrical potential energy

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A pitcher throws a baseball that reaches the catcher in 0.75 s. The ball curves because it is spinning at an average angular vel

7nadin3 [17]

The change in angular displacement as a function of time is the definition given for angular velocity, this is mathematically described as

$\omega = \frac{\theta}{t}$

Here,

$\theta$ = Angular displacement

t = time

The angular velocity is given as

$\omega = 230rev/min$

PART A) The angular velocity in SI Units will be,

$\omega = 230rev/min (\frac{1min}{60s})(\frac{2\pi rad}{1rev})$

$\omega = \frac{23}{3}\pi rad/s \approx 24.08rad/s$

PART B) From our first equation we can rearrange to find the angular displacement then

$\theta = \omega t$

Replacing,

$\theta = (24.08)(0.75)$

$\theta = 18.06 rad$

4 0

3 years ago

A 25.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 21.00 m. When she is partway do

____ [38]

Answer:

The mechanical energy lost due to friction is 2,424.5 J

Explanation:

Given;

mass of the child, m = 25 kg

intial velocity of the child, u = 0

final velocity of the child, v = 7.8 m/s

initial position of the child, h₁ = 21 m

final position of the child, h₂ = 8 m

Let the energy lost due to heat = ΔE

ΔE + ΔK.E + ΔP.E = 0

ΔE + ¹/₂m(v² - u²) + mg(h₂ - h₁) = 0

ΔE + ¹/₂ x 25(7.8² - 0) + 25 x 9.8(8 - 21) = 0

ΔE + 760.5 J - 3185 J =

ΔE - 2,424.5 J = 0

ΔE = 2,424.5 J

Therefore, the mechanical energy lost due to friction is 2,424.5 J

4 0

3 years ago

these are the sierra nevada mountains.ice wedging is one of the ways these mountains where weathered.please help

kramer

Answer:

Explanation:

7 0

3 years ago

Read 2 more answers

Which statement about the function of the cell membrane of all organisms is not correct? The cell membrane forms a barrier that

rosijanka [135]

Answer:

The cell membrane is capable of transforming oxygen and glucose into energy for the cell

Explanation:

The cell membrane encapsulates all the organelles of the cell. It provides protection for the organelles of the cell.

It transports nutrients into the cell and toxic materials out of the cell. It also prevents the entry of harmful materials into the cell.

The cell membrane does not perform the function of transforming oxygen and glucose into energy for the cell.

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3 years ago

I know what dark matter is, but what exactly is dark energy and what does it do?

aksik [14]

If you know what dark matter is, my friend, then there are several thousand Astrophysicists and Cosmologists at universities around the world who would pay dearly for the opportunity to buy you a cup of coffee, and chat while you sip it.

7 0

4 years ago