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

Answers

Answer 1

Answer:

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.

Answer 2

Answer: D. is the right answer because his pressure is very bad out there in the air.good luck

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Scientists studying a region in southern Florida have noticed drastic changes in the availability of freshwater. Which of the following probably did NOT contribute to these changes? A. Several years of declining rainfall B. Decrease in the population of pond plants C. Building of new homes in the area D. Construction of a dam on the local river
Friction in machines is commonly reduced by using what?
What does pi mean. full
Light traveling through air strikes the surface of the four different materials shown. Which material reflects light but does not refract it?1. Diamond 2. water being poured 3. triangular glass prism 4. 2 silver spoons PLZ HELP!!

What two motions combine to produce an orbit

Answers

The correct option for above statement is:

Gravity and Inertia

Explanation:

For instance, Gravity from our sun holds us at an essentially same range all the way around. It makes sure we don't sling off into the wisdom of our solar system. Inertia, keeps us in movement, if there were no inertia, our revolution would stop at a standstill. If we stayed, we would be sucked into the sun by its gravity.

Field motion ( as opposed to collision motion) which are forces like gravity. And Static motion ( as opposed to kinetic motion)
Static motion is where an object moves on or around another moving object. (Circular motion)

Hope this helped

What two variables are being graphed?In what units is each variable measured?
What is the force of gravity on the rocket at the planet's surface?
What is the force of gravity on the rocket at a distance of two units (twice the planet's radius from its center)?
In general, how does the force of gravity pulling on the rocket change as the distance between it and the planet increases?

Answers

-- The relationship between the distance from the planet's center and the force of gravity on the ship has been graphed. That's the reason for the labels on the axes.

-- The distance from the planet's center is labeled in multiples of the planet's radius.

The force of gravity on the ship is labeled in multiples of 1 million newtons.

-- The force of gravity on the rocket at the planet's surface (1 radius from the center) is 4 million newtons. (about 899,203 pounds)

-- The force of gravity on the rocket at a distance of two units (twice the planet's radius from its center) is 1 million newtons.

-- In general, as the distance between the rocket and the planet increases, the force of gravity pulling on the rocket decreases.

From our studies of the nature of gravity, we know that the force is inversely proportional to the square of the distance between the center of the rocket and the center of the planet. We might not notice it from the graph, because there's only one labeled point that clearly shows it. (2radius, 1/4 of the surface force).

If we have been really attentive to our studies and have done all of our gravity homework, we know that the equation of the purple line on the graph is

Force = (4 million newtons) / (Distance)² for Distance >= 1 radius.

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3more laps at 7 mph. What is true about her average speed and her average
velocity?

Answers

Answer:

Emily's average speed is 6 mph and her average velocity is zero.

Explanation:

We can calculate the average speed as:

s = (s₁ + s₂) / 2 = (5 mph + 7 mph ) /2 = 12 mph / 2 = 6 mph

s: average speed

s₁: speed in the first 3 laps

s₂: speed in the second 3 laps

And we can calculate the average velocity as:

v = (df - di) / t = (0 m - 0 m) / t = 0 m / t = 0 m / s

v: average velocity

df: final displacement

di: initial displacement

t: time

As Emily is finally in the same place, it doesn't matter the time to finish the 6 laps, we know that the displacement is zero so the average velocity is zero too.

I need help with this for physics