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3 years ago

What is voltage?

Physics

2 answers:

Andrews [41]3 years ago

5 0

<span>C. It is the difference in electrical potential energy between two places in an electric field.</span>

marin [14]3 years ago

3 0

Answer:

C. It is the difference in electrical potential energy between two places in an electric field.

Explanation:

The voltage, also known as voltage or potential difference is a physical quantity that drives electrons along a conductor in a closed electrical circuit, causing the flow of an electric current.

The potential difference is also defined as the work per unit of charge exerted by the electric field, on a charged particle, to move it from one place to another. It can be measured with a voltmeter.

In the International System of Units, the potential difference is measured in Volts (V), as is the Potential.

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ollegr [7]

Answer:

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2 years ago

Calculate a rate of cooling down of air from 80 C to 5C Show calculation. Give an answer in cubic meters per minute and cfm.

antoniya [11.8K]

Explanation:

Given that,

Rate of cooling of air

Initial temperature= 80°C

Final temperature = 5°C

We need to calculate

Using newton's law of cooling

$\dfrac{dT}{dt}=c(T-T_{0})$

$\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})$

Where, $dT=T_{1}-T_{2}$

Here, $T =\dfrac{T_{1}+T_{2}}{2}$

$T_{0}$ = 25°C (surrounding temperature)

dt = 1 minute

$\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})$

Put the value into the formula

$\dfrac{80-5}{1}=c(\dfrac{85}{2}-25)$

$c=\dfrac{75}{17.5}$

$c=4.285\ cubic\ meter/minute$

Hence, This is the required answer.

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3 years ago

Vygotsky’s theory of cognitive development states that an individual constructs knowledge primarily through interaction with imp

defon

Answer:

false

Explanation:

trust me i j took the test

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3 years ago

Read 2 more answers

When an object is turning a corner what direction is the acceleration?

polet [3.4K]

If the corner is rounded and is perfectly circular, then the acceleration is centripetal and is always directed toward the center.

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3 years ago

A student climbs to the top of the gym and drops a baseball to the ground below. A physics student standing nearby has a motion

sladkih [1.3K]

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground ( $t$ ), measured in seconds, which is determined by the following kinematic formula: