The** kinetic energy **as measured in the Earth **reference frame** is 6.704*10^22** Joules**.

To find the answer, we have to know about the **Lorentz transformation**.

<h3>What is its kinetic energy as measured in the Earth reference frame?</h3>

It is given that, an alien spaceship traveling at 0.600 c toward the Earth, in the same direction the landing craft travels with a speed of 0.800 c relative to the mother ship. We have to find the kinetic energy as measured in the Earth reference frame, if the landing craft has a mass of 4.00 × 10⁵ kg.

- Let us consider the earth as S frame and space craft as S' frame, then the expression for KE will be,

- So, to find the KE, we have to find the value of speed of the approaching landing craft with respect to the earth frame.
- We have an expression from Lorents transformation for relativistic law of addition of velocities as,

- Substituting values, we get,

Thus, we can conclude that, the** kinetic energy **as measured in the Earth **reference frame** is 6.704*10^22** Joules**.

Learn more about** frame of reference **here:

brainly.com/question/20897534

SPJ4

Forces that cause a change in the motion of an object are UNBALANCED FORCES

Hope this helped:)

Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy.

**Answer:**

The untrue option is C: "More arrowheads on lines mean a brighter light"

**Explanation:**

Ray diagrams are used to show how the light behaves with things like mirrors or lenses. Where we only study how the direction of the light changes when it interacts with these objects.

The "light" is represented with arrows, where again, the only thing we care is the direction of the light, so the first statement is true, the arrowheads show the direction of the light, and only that.

The intensity of the light, in this context, has no effect on how light behaves, so there is not a necessity of representing the intensity of the light, thus, more arrowheads on lines do not mean a brighter light. It may only be used to represent changes in direction of the light.

Finally, we know that light travels in straight pats (the pats can be curved in some cases, like with large gravitational fields, but this is not the case of a ray diagram) so the lines that represent the light should always be straight, thus option B is also true.

The untrue option is C: "More arrowheads on lines mean a brighter light"

Acceleration of the car = 4.6 m/s^2

Initial time taken (T1) = 0 second

Final time taken (T2) = 10 seconds

Initial velocity of the car (V1) = 0 m/s

Let us assume the final velocity of the car (V2) = x m/s

Then

Acceleration of the car = (V2 - V1)/(T2 - T1)

4.6 = (x - 0)/(10 - 0)

4.6 = x/10

x = 4.6 * 10

= 46 m/s

So the final velocity of the car Ariana is driving is 46 m/s.I hope the procedure is clear enough for you to understand. In future you can always use this procedure for solving similar problems without requiring any help from outside.