3 years ago

Why is light-year not related to time? (I just need scientific evidence why it isn't related to time)

1 answer:

6 0

Answer:

A light year is a measure of distance as opposed to a time measurement. This is because a light year is the distance light can travel in the time of a year.

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A system has 4 independent and identical motors, in order for the system to work, at least one of the motors must operate. Each

grin007 [14]

Answer:

The system's Mean Time to Failure is 1,041. $\bar 6$ hours

Explanation:

The number of independent identical motors = 4

The failure rate of each motor, λ = 0.002 failures per hour

Given that in order for the system to work, at least one of the motors must operate, therefore, the system are in parallel

The Mean Time to Failure for a parallel system of four identical components is given as follows;

$MTTF = \dfrac{1 }{\lambda} \times \left (1 + \dfrac{1}{2} + \dfrac{1}{3} + \dfrac{1}{4} \right)$

Which gives;

$MTTF = \dfrac{1 }{0.002} \times \left (1 + \dfrac{1}{2} + \dfrac{1}{3} + \dfrac{1}{4} \right) = 1,041.\bar 6$

The system's Mean Time to Failure = 1,041. $\bar 6$ hours.

8 0

3 years ago

4. As a 500 N woman sits on the floor, the floor exerts a force on her of

monitta

Answer: 1000

Explanation:

Its double her weight

7 0

3 years ago

The very strong source of radio waves at the center of our galaxy is called.

Alika [10]

The answer is Sagittarius A, a very large black hole.

4 0

3 years ago

Why do people walks bare feel pain

matrenka [14]

Answer:

As we age the fat pad underneath the bones at the front of our feet (metatarsal heads) and under the heel bone become thinner or “migrate” away from where they are most needed

8 0

3 years ago

a ball on a string makes 30.0 revolutions in 14.4s, in a circle of radius 0.340m. what is its period.(unit=s)

STALIN [3.7K]

Answer:

0.480 seconds

Explanation:

The period is the time for 1 revolution. Writing a proportion:

14.4 s / 30.0 rev = t / 1 rev

t = 0.480 s

The period is 0.480 seconds.

7 0

3 years ago