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4 years ago

What is voltage?

Physics

2 answers:

Andrews [41]4 years ago

5 0

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

marin [14]4 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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Which is NOT considered as a property of electromagnetic waves: 5

OlgaM077 [116]

Answer:

require a medium to propagate

Explanation:

this is because electromagnetic waves can travel through vacuum at the speed of 3.0 x 10^8 m/s

because they don't need particles to transfer energy

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3 years ago

An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 238C by rejecting the waste heat to the

tatiyna

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3 years ago

What must be true of a force that causes an object to move in a circular motion?

AlladinOne [14]

Before going to answer this question, first we have to understand centripetal force.

The centripetal force is the force which is required to keep the body along its circular path.The direction of the force is along the radius and towards the centre.

$Mathematically\ centripetal\ force\ F_{c} =\frac{mv^2}{r}$

Here m is the mass of the body,v is the velocity of the body and r is the radius of the circular path.

When a body moves in a circular path,its velocity at any point is the tangent drawn at that point.

As centripetal force acts along the radius, it must be perpendicular to the velocity of the body.

Hence the correct answer to the question is- It acts perpendicular to the velocity and is directed toward the center of the circle.

7 0

3 years ago

Read 2 more answers

1) O que é Dança?????

Naddika [18.5K]

Answer:

La danza, el movimiento del cuerpo de manera rítmica, generalmente con música y dentro de un espacio determinado, con el propósito de expresar una idea o emoción, liberar energía o simplemente deleitarse con el movimiento en sí. La danza es una forma de arte escénico que consiste en de secuencias de movimiento humano seleccionadas a propósito. Este movimiento tiene un valor estético y simbólico, y es reconocido como danza por artistas y observadores dentro de una cultura particular.

4 0

3 years ago

3. Suppose that an airplane flying 60 m/s, at a height of 300m, dropped a sack of flour (pere the effect

Arlecino [84]

469.24m. An airplane flying 60m/s at a height of 300m dropped a sack of flour that stack the ground 469.24m from the point of release.

This is a example of horizontal parabolic projectile motion,and we represents this motion in the coordinate axis, which means that the velocity has components in x axis and y axis.

The equation of components on the x axis.

$v_{0}x=\frac{x}{t}$ , where x is the distance and Vox the initial velocity before the drop

The equation of components on the y axis.

$y = v_{0}yt+\frac{gt^{2} }{2}$ , where y is the height, and the velocity in y component before the drop is 0, reducing the equation to $y = \frac{gt^{2} }{2}$

Clear t from both the equation of components on the x axis and the y axis:

$t=\frac{x}{v_{0} x}$ and $t=\sqrt{\frac{2h}{g}}$

Equating both equations and clearing the distance x:

$\frac{x}{v_{0} x}=\sqrt{\frac{2h}{g}}\\x={v_{0} x}\sqrt{\frac{2h}{g}}$

Substituting the values:

$x=60\frac{m}{s} \sqrt{\frac{2(300m)}{9.81\frac{m}{s^{2} } }}=469.24m$

3 0

3 years ago