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2 years ago

What must happen to the electric current in power lines before it can safely enter your home?

2 answers:

7 0

Answer: use the step down transformers to reduce these voltages in the power lines before they are supplied to the users.

Explanation:

lozanna [386]2 years ago

5 0

Answer:

It passes through a step-down transformer.

Explanation:

Electric current in power lines must be stepped down before they enter our homes because they carry a very high voltage.

The voltage can destroy appliances that have very low voltage.

In this regard, a step down transformer is used to achieve this effect.
The transformer brings the voltage to a level fit to consumers to use.
When voltage is stepped down, appliances can work perfectly.

You might be interested in

Calculated the measurement uncertainty for Kinetic Energy when :mass = 1.3[kg] +/- 0.4[kg]velocity= 5.2 [m/s] +/- 0.2 [m/s]KE= 1

andriy [413]

Answer:

$\rm KE\pm \Delta KE = 17.6\pm 6.8\ J.$

Explanation:

<u>Given:</u>

Mass, $\rm m\pm\Delta m = 1.3\pm 0.4\ kg.$

Velocity, $\rm v\pm \Delta v = 5.2\pm 0.2\ m/s.$

where,

$\rm \Delta m,\ \Delta v$ are the uncertainties in mass and velocity respectively.

The kinetic energy is given by

$\rm KE = \dfrac 12 mv^2 = \dfrac 12 \times 1.3\times 5.2^2=17.576\approx 17.6\ J.$

The uncertainty in kinetic energy is given as:

$\rm \dfrac{\Delta KE}{KE}=\dfrac{\Delta m}{m}+\dfrac{2\Delta v}{v}\\\dfrac{\Delta KE}{17.6}=\dfrac{0.4}{1.3}+\dfrac{2\times 0.2}{5.2}\\\dfrac{\Delta KE}{17.6}=0.384\\\Rightarrow \Delta KE = 17.6\times 0.384 = 6.7854\ J\approx6.8\ J\\\\Thus,\\\\KE\pm \Delta KE = 17.6\pm 6.8\ J.$

7 0

3 years ago

When an object slides across the floor, it is slowed down by friction and the floor surface gets warmer. what energy conversion

OverLord2011 [107]

The movement of the object is considered to be kinetic energy while the object getting warmer indicates that there is thermal (heat) energy formed.

Based on this, as the object slides across the floor, friction slows down this motion and the object becomes warmer as kinetic energy is converted into thermal energy.

6 0

3 years ago

Convert 200in/10s into m/s (1m = 39.37in)

stiv31 [10]

5.08

hope you got it right !

7 0

3 years ago

An electron and a proton have the same kinetic energy and are moving at speeds much less than the speed of light. Determine the

morpeh [17]

Answer:

The ratio of the Broglie wavelength of an electron to that of the proton is 42.85.

Explanation:

let λe be the Broglie wavelength of the electron and λp be the Broglie wavelength of the proton, Me be the mass of the electron and Mp be the mass of the proton. let h be the Planck constant, Kep be the kinetic energy of the proton and KEe be the kinetic energy of the electron

4 0

3 years ago

How much kinetic energy does a train with a mass of 30,000 kg have moving 2<br> m/s?

Fynjy0 [20]

KE = 60,000 J

Explanation:

KE = (1/2)mv^2

= (1/2)(30000 kg)(2 m/s)^2

= 60,000 J

6 0

2 years ago