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melamori03 [73]
3 years ago
11

How many kilometers equals one astronomical unit?

Physics
2 answers:
Ratling [72]3 years ago
4 0
The correct answer is B) 150 million kilometers. Hope this helps.
forsale [732]3 years ago
4 0
B 150 million kilometers is correct
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One way to produce a beam of polarized light with intensity I and polarization angle θ would be to pass unpolarized light with i
Karo-lina-s [1.5K]

Polarization of light is achieved by passing the light through a polarizer which causes the light to vibrate in only one direction.

<h3>What is  polarization of light?</h3>

The question is unclear but I will try  to explain what is meant by polarization of light.  We know that light is an electromagetic wave and vibrates in all directions.

The polarization of light enables light to vibrate in a specified direction. This is achieved by passing the light through a polarizer which causes the light to vibrate in only one direction.

Learn more about polarization of light: brainly.com/question/17159388

3 0
3 years ago
DESPERATEA rocket of mass 40 000 kg takes off and flies to a height of 2.5 km as its engines produce 500 000 N of thrust.
77julia77 [94]

Answer:

i=1250000000Nm

ii=50000m/s

Explanation:

energy=force ×distance

500000N×(2.5×1000)m

=1250000000Nm

ii. Force=mass ×acceleration

500000N =40000kg ×a

500000 ÷40000=12.5a

s=1/2at^2

2500m=1/2×12.5×t^2

2500m=6.25×t^s

2500÷6.25=400

t^2=400

√t^2=√400

t=20seconds

speed=distance ×time taken

=2500m × 20s

=50000m/s

5 0
3 years ago
Find the speed at which Superman (mass=78.0 kg) must fly into a train (mass = 17863 kg) traveling at 75.0 km/hr to stop it. Runn
lapo4ka [179]

Answer with Explanation:

We are given that

Mass of superman=m=78 kg

Mass of train=m'=17863 kg

Speed of train=u'=75 km/h=75\times \frac{5}{18}=20.8 m/s

1 km/h=\frac{5}{18} m/s

Let initial speed of superman=u

Momentum=mv

Using the formula

78u=17863\times 75

u=\frac{17863\times 75}{78}

u=17175.9 km/h

Average horizontal force=0.58

Deceleration a=-0.58\times 9.8=-5.68 m/s^2

Final speed of train=v'=0

v=u+at

Using the formula

0=20.8-5.68t

5.68t=20.8

t=\frac{v'-u'}{a}=\frac{0-20.8}{-5.68}

t=3.66 s

v^2-u^2=2as

Using the formula

0-(20.8)^2=2(-5.68)a

(20.8)^2=2(5.68)s

s={\frac{(20.8)^2}{2(5.68)}=38.1 m

6 0
3 years ago
Read 2 more answers
Semiconductors can simplistically be thought of as an intermediate state between insulators and conductors. In a semiconductor,
Triss [41]

Answer:

The semiconductor rod will conduct electricity

Explanation:

Glass rod does not conduct electricity. Glass is one of the best insulators of electricity. But when a glass rod is replace with a semi conductor, then the semi conductor rod starts conducting electricity as the electrons are free to move.

Semi conductors are special materials in which the energy band lies in between the conductor and the non conductor. The conductivity of a semi conductor increases with the increasing temperature.

In an semi conductor the electrons are free to move and as they starts moving they conduct electricity. Thus a semi conductor rod replacing a glass rod conducts electricity.

6 0
3 years ago
Light strikes a smooth wooden tabletop. What happens to the light after it is reflected?
muminat
"<span>The light rays bounce off the table and all move in the same direction."

Hope this helps!</span>
8 0
3 years ago
Read 2 more answers
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