3 years ago

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Physics

2 answers:

Sunny_sXe [5.5K]3 years ago

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Answer:

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Verdich [7]3 years ago

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Answer:

i WILL THANK YOU SO MUCH

Explanation:

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Which of the following statements best describes energy conservation in heat engines?

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B is the correct answer

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Wtz the answer to this question? I need to get it right

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A bicyclist with a mass of 50 kg is traveling at a rate of 30 m/s. It accelerates to a rate of 50 m/s in 5 seconds. What is the

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3 years ago

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A particle with a charge of 3.00 elementary charges moves through a potential difference of 4.50 volts. What is the change in el

GuDViN [60]

Answer:

$7.2\cdot 10^{-19} J$

Explanation:

The change in electrical potential energy of a charged particle moving through a potential difference is given by

$\Delta U = q \Delta V$

where

q is the magnitude of the charge of the particle

$\Delta V$ is the potential difference

In this problem:

- the charge of the particle is 3.00 elementary charges, so

$q=3e=3\cdot 1.6\cdot 10^{-19} J=4.8\cdot 10^{-19}J$

- the potential difference is

$\Delta V=4.50 V$

So, the change in electrical potential energy is

$\Delta U=(1.6\cdot 10^{-19}C)(4.50 V)=7.2\cdot 10^{-19} J$

7 0

4 years ago

Sub this channel pls... frreee points too.. ☺​

Sub this channel pls... frreee points too.. ☺