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Montano1993 [528]

3 years ago

14

All parts of the electromagnetic spectrum travel at a speed of 3 × 108 m/s when traveling through no medium. A "vacuum" means th

at there is no medium, such as a tube without any air in it. Therefore, 3 × 108 m/s is said to be the speed of light in a vacuum.

1 answer:

Rus_ich [418]3 years ago

7 0

wrong, the speed of light is approximately 299 792 458 meters/second in a vacuum, not 324 meters/second in a vacuum

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If its wavelength were doubled, its energy would be If its wavelength were doubled, its energy would be 4E. 2E. 12E. 14E.

ANEK [815]

The wavelength was doubled, and its energy will be increased by 4 times.

looking at the formula

energy $E = MC^2$

also, $c = \lambda \times \nu$

hence it is clear from above that energy is directly proportional to the square of the wavelength.

hence, The wavelength was doubled, and its energy will be increased by 4 times.

<h3>What is Wavelength?</h3>

The distance over which a periodic wave's shape repeats is known as the wavelength in physics.
It is a property of both traveling waves and standing waves as well as other spatial wave patterns. It is the distance between two successive corresponding locations of the same phase on the wave, such as two nearby crests, troughs, or zero crossings.
The spatial frequency is the reciprocal of the wavelength. The Greek letter lambda is frequently used to represent wavelength.
The term wavelength is occasionally used to describe modulated waves, their sinusoidal envelopes, or waves created by the interference of several sinusoids.

To learn more about wavelength with the given link

brainly.com/question/13533093

#SPJ4

5 0

2 years ago

Write a program that calculates the average of n integers. the program should prompt the user to enter the value for n and then

ikadub [295]

#include<studio.h>

int main( )

{

int n;

int a,b,c,d,x,y;

int avarage;

printf("enter value of n:\n");

scanf("%d",&n);

printf("enter value of a:\n,b:\n,c:\n,d:\n,x:\n,y:\n);

scan f("%d\%d\n%d\n%d\n%d\n%d\n",&a,b,c,d,x,y);

sum=(a+b+c+d+x+y);

avarage=(sum/n);

print f("%d",avarage);

if

{

n=positive interger

}

else

{

printf ("n must be positive");

}

return 0;

}

8 0

3 years ago

The position coordinate of a particle which is confined to move along a straight line is given by s =2t3−24t+6, where s is measu

Gre4nikov [31]

Answer:

a) the answer is t=4 seconds

b) acceleration is zero

c) displacement= 142 m

Explanation:

Given the position of the particle

$s=2t^3-24t+6$

a) the time required when velocity $v=72 m/s$

$v=72=\frac{ds}{st}=6t^2-24$

now we solve for time $t$

$6t^2=72+24=96\\\\\implies t^2=\frac{96}{6}\\\therefore t=4 s$

b) acceleration when $v=30 m/s$

acceleration is the time derivative of velocity i.e

$a=\frac{dv}{dt}=\frac{d}{dt}(30)=0$

c) the net displacement of the particle during the interval t = 1 s to t = 4 s is

$s_4-s_1=2t^3-24+6|_{t=4}-2t^3-24+6|_{t=1}\\s_4-s_1=126-(-16)=142 m$

7 0

4 years ago

A radar for tracking aircraft broadcasts a 12 GHz microwave beam from a 2.0-m-diameter circular radar antenna. From a wave persp

lubasha [3.4K]

Answer:

a) 915 m

b) 0.15 W/ $m^{2}$

Explanation:

solution:

a) The wavelength of the microwaves electromagnetic wave is:

λ= $\frac{c}{f}$ = $\frac{3*10^{8} }{12*10^{9}}$ =0.025 m

the circular radar antenna acts like a circular aperture of diameter D will have a bright central maximum of diameter:

w=2.44λL/D

so at 30 km screen:

w=2.44λL/w

=2.44*0.025*30*10^3/2

=915 m

b)

The area of a beam at 30 km is:

A= $\pi r^{2}$ = $\pi (\frac{w}{2} )^2$ = $\pi (\frac{915}{2} )^2$ = $657*10^{3} m^{2}$

the average microwave intensity is equal to the ratio of the power of the antenna and area of the beam:

I=P/A

So at 30 km:

I=100*10^3/657*10^3

=0.15 W/ $m^{2}$

8 0

3 years ago

Tarik winds a small paper tube uniformly with 185 turns of thin wire to form a solenoid. The tube's diameter is 7.51 mm and its

bonufazy [111]

The inductance, in microhenrys, of Tarik's solenoid 196μH.

<h3>What is Solenoid?</h3>

A coil of enameled or insulated wire coiled on a rod-shaped form constructed of solid iron, solid steel, or powdered iron is referred to as a solenoid. These kinds of gadgets can be utilised as miniaturised wireless receiving antennas, inductors in electrical circuits, and as electromagnets.

The inductance (L) of a coil wire (e.g solenoid) is given by;

L = μ₀N²A / l --------------(i)

Where;

l = the length of the solenoid

A = cross-sectional area of the solenoid

N= number of turns of the solenoid

μ₀ = permeability of free space = 4π x 10⁻⁷ N/A²

From the question;

N = 185 turns

l = 2.19cm = 0.019m

diameter, d = 7.51mm = 0.00751m

But;

A = π d² / 4 [Take π = 3.142 and substitute d = 0.00751m]

A = 3.142 x 0.00751² / 4

A = 4.42 x 10⁻⁵m²

Substitute these values into equation (i) as follows;

L = 4π x 10⁻⁷ x 185² x 4.42 x 10⁻⁵ / 0.0219 [Take π = 3.142]

L = 4(3.142) x 10⁻⁷ x 185² x 4.42 x 10⁻⁵ / 0.0219

L = 196 x 10⁻⁶ H

L = 196 μH

Therefore the inductance in microhenrys of the Tarik's solenoid is 196 μH.

to learn more about Solenoid go to - brainly.com/question/1873362

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7 0

2 years ago