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3 years ago

Differences Between light year and astronomical unit in two points .

Physics

2 answers:

Marina CMI [18]3 years ago

7 0

Answer:

A light year is the distance light travels in a year. ... And an astronomical unit is the average distance between the earth and the sun. So the distance to the sun is by definition one AU. A parsec is the distance at which one astronomical unit subtends an angle of one second of arc.

Maslowich3 years ago

5 0

Answer: A light year is the distance light travels in a year. ... And an astronomical unit is the average distance between the earth and the sun. So the distance to the sun is by definition one AU. A parsec is the distance at which one astronomical unit subtends an angle of one second of arc

Explanation:

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Why does it take several minutes for the smell of a freshly cut lemon to be detectable on the opposite side of the kitchen?

riadik2000 [5.3K]

When the lemon is cut, it releases gaseous molecules into the surrounding air which are responsible for the lemon's smell. These molecules move slowly at room temperature and the distance that they must cover, in relevance to their size, is immense. These reasons contribute to the fact that the smell takes a while to reach the other side of the room.

5 0

3 years ago

A generator connected to an RLC circuit has an rms voltage of 140 V and an rms current of 31 mA. Part A

vredina [299]

Answer:

53.06 ohm

Explanation:

We have given the rms voltage V =140 V

And the rms current i=31 mA

So the impedance $Z=\frac{V}{i}=\frac{140}{3\times 10^{-3}}=46.666kohm$

Resistance is given as R = 3 kohm

And capacitive reactance $X_C=6.5kohm$

We know that $Z=\sqrt{R^2+(X_L-X_C)^2}$

$46.666=\sqrt{3^2+(X_L-6.5)^2}$

Squaring both side $2177.1556=9+(X_L-6.5)^2$

$(X_L-6.5)^2=2168.155$

$(X_L-6.5)=46.5634$

$X_L=53.063ohm$

8 0

3 years ago

H=K+log(a/c) isolate a

Soloha48 [4]

H=k+log(a/c)
H-k = log(a/c)
e^{h-k}=a/c
a = ce^{h-k}

3 0

3 years ago

Read 2 more answers

An object that is moving in a linear path with an acceleration in the direction of motion has a(n) ______________ velocity. cons

Kamila [148]

The correct answer is increasing velocity.

In fact, the fact that the object has an acceleration different from zero means that the velocity of the object is changing. If the acceleration is in the direction of the motion, then it is a positive acceleration, therefore the velocity is increasing. The law of velocity for an object in accelerated motion is in fact
$v(t)=v_0 + at$
where $v_0$ is the initial velocity, a the acceleration and t the time. When a is positive (same direction of the motion), then the term (at) is increasing as t becomes larger, therefore the velocity v(t) is increasing as well.

8 0

4 years ago

If the speed of light is 3.0 × 108 m/s2, then how much energy would be released if a 23.7 gram object is converted to pure energ

elena55 [62]

7.11x 10⁶J

Explanation:

Given parameters:

Speed of light = 3 x 10⁸m/s

Mass of object = 23.7g = 0.0237kg

Unknown:

Energy = ?

Solution:

From Einstein's equation, we see that mass and energy are equivalent using the expression below:

E = mc²

Substituting the parameters:

E = 3 x 10⁸ x 0.0237 = 7.11x 10⁶J

Learn more:

Energy brainly.com/question/5381158

#learnwithBrainly

3 0

4 years ago