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Nikitich [7]
3 years ago
8

What does a light year measure

Physics
2 answers:
SVEN [57.7K]3 years ago
8 0
It’s used in measuring distance from earth with other celestial object. Hope this helps mark brainest
IRINA_888 [86]3 years ago
5 0
Light years measure the distance in space
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A conductor carries a current that is decreasing exponentially with time. The current is modeled as ????=????0????−????/???? , w
Vlad1618 [11]

Answer:

Q=1.42 C

Explanation:

Given that

I=I_oe^{\dfrac{-t}{\tau}}

When t= 0 ,Io = 3 A

τ = Time constant = 0.5 s

I=3e^{-\dfrac{t}{\tau}}

We know that

I=\dfrac{dQ}{dt}

Q=Charge ,I =Current

Q = ∫I.dt

Given that

t= 0 to t= 3τ= 1.5 s

The charge Q

Q=\int_{0}^{1.5}3e^{-\dfrac{t}{0.5}}dt

Q=1.42 C

Therefore charge flow conductor will be 1.42 C.

3 0
3 years ago
if the magnitude of a vector is 42 and the angle it makes with the x-axis is 11 degrees, what is the horizontal vector component
Paladinen [302]

Answer:

41.23

Explanation:

6 0
3 years ago
Mateo and Jackie were on a playground rolling some different-sized balls to get them to crash. They used a tennis ball (the same
creativ13 [48]

Answer:

In crash one, because the pink soccer ball had more mass, so it would have a stronger force.

6 0
3 years ago
8-30-2018 what phase change occurs as the substance at 0 degree c has its pressure dropped from 0.50 at to 0.25 atm
madam [21]

Answer:

at T = 0ºC the change of state is from the solid state to the gaseous state

Explanation:

In this exercise we are asked about the changes of state, from the data we will assume that the material is water.

Water can exist in three solid states, liquid and gas, in a graph of pressure ℗ against temperature (T) there is a point called triple at T = 0.01ºC, below this point the curve has two states at high pressure solid and low pressure gas.

As a result of the previous ones at T = 0ºC the change of state is from the solid state to the gaseous state

7 0
3 years ago
In a binary-star system that produces a nova, the white dwarf pulls matter from the companion star. The matter forms an accretio
Studentka2010 [4]

As a head-up, it is important to notice that a white dwarf only shines thanks to the stored energy and light, because a white dwarf doesn't have any hydrogen left to perform nuclear fusion.

Now the process:

First, the white dwarf accumulates all the extracted matter from its companion, onto its own surface. This extra matter increases the white dwarf's temperature and density.

After a while, the star reaches about 10 million K, so nuclear fusion can begin. The hydrogen that has been "stolen" from the other star and accumulated in the white dwarf's surface it's used for the fusion, dramatically increasing the star's brightness for a short time, causing what we know as a Nova.

As this fuel its quickly burnt out or blown into space, the star goes back to its natural white dwarf state. Since the white dwarf nor the companion star are destroyed in this process, it can happen countless of times during their lifespan.

4 0
3 years ago
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