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sashaice [31]
4 years ago
11

The communications of the ship were made inoperable by electromagnetic waves sent by the Death Star that were completely out of

phase with attempted communications causing _____.

Physics
1 answer:
Nastasia [14]4 years ago
4 0

Answer:

Option D.

Explanation:

Your full question is attached in the picture below

Destructive interference occurs when two waves are out of phase, so they cancel each other. The resulting wave has amplitude zero.

The waves are usually of the same frequency, but opposite phase, so the maxima of one wave cancels with the minima of the other.

We can see in the second image an example of destructive interference.

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A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount of force acted on the ball?
Delvig [45]
Newton taught us that    Force = (mass) x (acceleration)

Force  =  (0.2) x (20) = <em>4 newtons</em> .

Something to think about:  The ball can only accelerate while the club-face
is in contact with it.  Once the ball leaves the club, it can't accelerate any more,
because the force against it is gone.
4 0
3 years ago
How can we prevent ear-problems often encountered by passengers after a flight journey?​
slamgirl [31]

<u>Follow these tips to prevent ear-problems often encountered by passengers after a flight journey:-</u>

Yawn and swallow during ascent and descent. ...

Use the Valsalva maneuver during ascent and descent. ...

Don't sleep during takeoffs and landings. ...

Reconsider travel plans. ...

Use an over-the-counter nasal spray. ...

Use decongestant pills cautiously. ...

Take allergy medication.

3 0
3 years ago
An unknown material, m1 = 0.45 kg, at a temperature of T1 = 91 degrees C is added to a Dewer (an insulated container) which cont
goldenfox [79]

Answer:

Explanation:

Let the specific heat of material be s

heat lost by material = m₁ s (T 1 - T ) ,  (T 1 - T ) is fall in temp , m₁ is mass of material

= .45 x s x (91 - 31.4 )

= 26.82 s

Heat gained by water

= m₂ cw (T2 - T )

1.3 x 4186 x ( 31.4 - 23 )

heat lost = heat gained

m₂ cw (T2 - T ) = m₁ s (T 1 - T )

1.3 x 4186 x ( 31.4 - 23 ) =  .45 x s x (91 - 31.4 )

45711.12 = 26.82 s

s = 1704.36

7 0
3 years ago
Which of the following materials offer the least electrical resistance? Pure water, wood, salt water, glass
Vanyuwa [196]

Salt water offers the least electrical resistance.

<u>Explanation:</u>

Least electrical resistance indicates that any material which readily allows the electric current through itself, and shows more conductivity.

Here pure water doesn't contain any ions, so it is a bad conductor.

Wood and glass are also bad conductors of electricity.

Salt water contains ions, which conducts electricity which means it shows least electrical resistance.

5 0
3 years ago
Select which of the following statements are True or False. Assume Newtonian Mechanics.
saw5 [17]

Answer:

1) true 2)False 3)false 4)True 5)False 6)False

Explanation:

6 0
3 years ago
Read 2 more answers
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