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3 years ago

Which of the following is a disadvantage of radio?

Physics

1 answer:

Ne4ueva [31]3 years ago

6 0

Answer:

option c

Explanation:

The disadvantage of the radio signal is option c) which is radio waves create electrical interference. The radio-wave interference also called as electromagnetic interference is the phenomena that occurs due to the radio waves. This phenomena affects the electric circuits. The effects includes the electromagnetic induction, conduction or electrostatic coupling.

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How will the amount of power change if less work is done in more time?

yKpoI14uk [10]

The amount of power change if less work is done in more time"then the amount of power will decrease".

Option: B

Explanation:

The rate of performing any work or activity by transferring amount of energy per unit time is understood as power. The unit of power is watt

$Power = \frac{Work}{Time}$

Here this equation showcase that power is directly proportional to the work but dependent upon time as time is inversely proportional to the power i.e as time increases power decreases and vice versa.

This can be understood from an instance, on moving a load up a flight of stairs, the similar amount of work is done, no matter how heavy but when the work is done in a shorter period of time more power is required.

7 0

3 years ago

A series AC circuit contains a resistor, an inductor of 220 mH, a capacitor of 5.50 μF, and a generator with ΔVmax = 240 V opera

ki77a [65]

Answer:

$Xl=wL=69.11503383 ohm$

$Xc=\frac{-1}{wC}= -578.7452476 ohm$

$Z=\frac{240}{140*10^-3}=1.714285714 kilo-ohm$

$R=2.223915928 kilo-ohm$

$\alpha = -12.90698798 centigrades$

Explanation:

$L=220*10^-3$

$C=5.50*10^-6$

$Vmax=240V$

$Imax=140*10^-3$

$w=2\pi f=2\pi *50=314.1592654$

The capacitive reactance is given by:

$Xc=\frac{-1}{wC}=-578.7452476 ohm$

Now, The inductive reactance is given by:

$Xl=wL=69.11503383 ohm$

By the ohm´s law, the electrical impedance is:

$V=IZ$

$Z=\frac{V}{I}$

$Z=\frac{240}{140*10^-3}=1.714285714 kilo-ohm$

The total impedance is:

$Z=R+jX\\\\$ (*)

Where X is the total reactance given by:

$X=Xl+Xc=69.11503383-578.7452476=-509.6302138$

Let´s calculate the real part of Z using (*):

$R=1714.285714+509.6302138$

$R=2.223915928 kilo-ohm$

Finally the angle between the current and the voltage is equal to the impedance angle:

$\alpha=arctan(\frac{-509.6302138}{2223.915928})$

$\alpha =-12.90698798 centigrades$

8 0

3 years ago

Which of the following is moving faster?

solong [7]

The car, because logically, a car is faster and if you do the math, 300 meters per minutes is about 17 kilometers per hour, and that is lower than the car’s 36 kilometers per hour. I would show you my work but im tired man, please mark me brainliest

8 0

3 years ago

Which subatomic particle has a negative charge?

ValentinkaMS [17]

Answer:

C. $\displaystyle electron$

Explanation:

0 charge → Neutron

1 charge → Proton

I am joyous to assist you anytime.

4 0

3 years ago

a bucket of mass 1.90 kg is whirled in a vertical circle of radius 1.45 m . at the lowest point of its motion the tension in the

NeTakaya

The speed of the bucket is v = 4.61 m/sec

For the free body diagram, and apply Newton's second law:

T - mg = m(v2/r)

Plug in known values,

25 - 1.00*g = 1.00(v2/1.40)

Solve for v,

v = 4.61 m/sec

What is motion?

Motion is the change of position or direction of a body over time. Movement along a line or curve is called a translation. Movement that changes the direction of the body is called rotation. In both cases, all points on the body have the same speed (directional speed) and the same acceleration (time rate of change of speed). The most common motion combines both translation and rotation.

There are 6 types of motion

Oscillatory Motion.

Rotational Motion.

Translational Motion.

Periodic Motion.

Circular Motion.

Linear Motion.

Uniform Motion.

Non-Uniform Motion.

To learn more about motion, refer;

brainly.com/question/3421105

#SPJ4

3 0

1 year ago