Answer:
Sometimes you can see light from the Sun passing through clouds and the sunbeams appear as straight lines. After light has been reflected off an object, such as a tree or a book, it still travels in straight lines, but in a new direction.
Explanation:
The mass of the astronaut is the same on both, but weight is actually a force and it depends on the acceleration due to gravity. On the moon, the acceleration due to gravity is 1/6 of the Earth’s so the astronaut’s weight will be 1/6 lighter on the moon.
As it is given that Bulk modulus and density related to velocity of sound
![v = \sqrt{\frac{B}{\rho}}](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B%5Cfrac%7BB%7D%7B%5Crho%7D%7D)
by rearranging the equation we can say
![B = \rho * v^2](https://tex.z-dn.net/?f=B%20%3D%20%5Crho%20%2A%20v%5E2)
now we need to find the SI unit of Bulk modulus here
we can find it by plug in the units of density and speed here
![B = \frac{kg}{m^3} * (\frac{m}{s})^2](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7Bkg%7D%7Bm%5E3%7D%20%2A%20%28%5Cfrac%7Bm%7D%7Bs%7D%29%5E2)
so SI unit will be
![B = \frac{kg}{m* s^2}](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7Bkg%7D%7Bm%2A%20s%5E2%7D)
SO above is the SI unit of bulk Modulus
The correct option is
<span>D) can be transformed to different voltages
In fact, transformers can be used in order to change the voltage of an alternating current. This feature is particularly useful, because it allows to transmit electricity through power lines using very high voltages, and this allows to reduce the power dissipated along the lines.
In fact, the power generated by a power station is the product between the current and the voltage:
</span>
![P_{in}= VI](https://tex.z-dn.net/?f=P_%7Bin%7D%3D%20VI)
<span>So the current is:
</span>
![I= \frac{P_{in}}{V}](https://tex.z-dn.net/?f=I%3D%20%5Cfrac%7BP_%7Bin%7D%7D%7BV%7D%20)
(1)
<span>
The power dissipated along the transmission line, instead, is given by
</span>
![P_{diss} = I^2 R](https://tex.z-dn.net/?f=P_%7Bdiss%7D%20%3D%20I%5E2%20R)
<span>and if we use (1) inside this, we find
</span>
![P_{diss} = \frac{P_{in}^2}{V^2} R](https://tex.z-dn.net/?f=P_%7Bdiss%7D%20%3D%20%20%5Cfrac%7BP_%7Bin%7D%5E2%7D%7BV%5E2%7D%20R)
<span>so we see that the higher the voltage, the lower the power dissipated along the transmission lines.
Then, transformers are also used at the end of the power lines, in order to convert these very high voltages into the standard voltage (e.g. 240 V) used by household appliances.</span>
Answer:
Northeast
Explanation:
I'm not sure if there's some fancy thing you have to do, but if there's no cardinal compass given, I think it's safe to assume that the answer is based off of one. Therefore, up is north, right is east, so Maple Creek flows to the northeast.
However, if they do give you one where, say, north points downwards, the creek would flow to the southwest. But again, from what is shown, there's no compass, so NE is your best guess here.