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adell [148]
3 years ago
12

While watching a recent science fiction movie, one Klingon spaceship blows up a Droid spaceship with a laser gun. The Klingon cr

ew watches out the port window and covers their ears to muffle the noise from the explosion. Scientifically, this scene is inaccurate because
A)
light can not reflect off objects in the vacuum of space.



B)
they would not be able to see anything outside the window.



C)
lasers can not be transmitted through the vacuum of space.



D)
the sound of the explosion would not be transmitted back to their ship.
Physics
2 answers:
podryga [215]3 years ago
6 0

Answer:

D)  the sound of the explosion would not be transmitted back to their ship.

Explanation:

Sound is a mechanical wave. A mechanical wave requires a medium to travel and transfer energy. It travels be compression and rarefaction of the medium. Since in space it is vacuum, the sound energy by the explosion of the spaceship would not be able to travel through the space, the Klingon crew are not required to cover their ears to muffle the noise. This scene would be inaccurate scientifically.

Aneli [31]3 years ago
5 0
D. is the right answer because his pressure is very bad out there in the air. good luck
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A wave traveling in water has a frequency of 250 Hz and a wavelength of 6.0 N. What is the speed of the wave?
enyata [817]
The speed of a wave is determined by the product of the frequency and the wavelength; we already have the wavelength and the frequency, so all we need to do is multiply them by each other and use our proper unit of measure.

Velocity (speed) = Frequency x Wavelength
V = 250 x 6
V = 1500

Your answer is 1500 m/s.

I hope this helps!
5 0
3 years ago
A box is being pulled by two ropes. Eduardo pulls to the left with a force of 500 N, and Clara pulls to the right with a force o
sergejj [24]

Answer:

kinetic friction or something else

Explanation:

Draw a diagram to illustrate the problem, as shown below.

m = mass of the box, kg

mg =  weight of the box, N, acting downward

Because of Newton's 3rd law, a normal force of N = mg acts upward on the box.

C = 200 N, the force applied by Clara, horizontally to the right

E = 500 N, the force applied by Eduardo, horizontally to the left.

Because E is greater than C, the box will move left.

The frictional force, F, will resist the initial motion. Its magnitude is

F = μN = μmg, where μ = kinetic coefficient of friction.

F acts horizontally to the right.

From the given table, we can conclude that

Normal force acting upward is correct

Tension by Eduardoacting left is correct.

Tension by Clara acting right is correct.

Kinetic friction acting left is Incorrect.

Gravity acting downward is correct.correct

Answer:

The direction of the kinetic friction force is incorrect

8 0
3 years ago
A baseball with a mass of 0.8 kg is given an acceleration of 20m/s.how much force was applied to the ball
Delicious77 [7]
F=mass x acceleration = ma= 0.8*20 = 16N
5 0
3 years ago
Just need to know net force, unbalanced or balanced and accelerated or not accelerated :)
jonny [76]

Answer:

9. 45 N North East

Unbalanced

Accelerate

10. 45 N right and 6 N down

Unbalanced

Accelerate

Explanation:

Hope this helps!

5 0
3 years ago
Identify and define characteristics of both visible and sound waves. These include but are not limited to frequency, pitch, ampl
jeyben [28]
<h3><u>Answer and explanation;</u></h3>
  • <em><u>Sound waves are mechanical waves and are examples of the longitudinal type, a longitudinal wave involves the movement of molecules in the medium parallel to the direction of the wave.</u></em>
  • Sound waves are longitudinal mechanical waves because they move particles parallel to their direction of travel. For example, if a sound wave travels from left to right.
  • <em><u>Pitch is what we perceive as the low or high note quality of a sound. Pitch is determined by the frequency of the sound wave that moved through the air to our eardrums. Frequency is the time taken for a complete oscillation of a wave. </u></em>
  • The more energy or work used to create the vibration, which in turn creates the sound wave, the greater the amplitude of the wave and the louder the sound. Wavelength is the distance between two successive rarefactions or compression in a longitudinal wave.
  • For example, if you were to lightly hit a drum with a drum stick, there would be a softer sound as opposed to the loud boom that would be created if you hit the drum with all of your might
3 0
3 years ago
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