Answer:
(a) Energy will be 675 J
(B) charge will be 450 C
(C) Total number of particles will be ![281.25\times 10^6](https://tex.z-dn.net/?f=281.25%5Ctimes%2010%5E6)
Explanation:
We have given that a flashlight uses 0.75 watts of power
So power P = 0.75 watt
Voltage is given as V = 1.5 volt
Time is given as t = 15 minutes
We know that 1 minute = 60 sec
So 15 minutes = ![15\times 60=900sec](https://tex.z-dn.net/?f=15%5Ctimes%2060%3D900sec)
(A) We know that energy is given by ![E=P\times T=0.75\times 900=675j](https://tex.z-dn.net/?f=E%3DP%5Ctimes%20T%3D0.75%5Ctimes%20900%3D675j)
(b) We know that energy is also given by ![E=QV](https://tex.z-dn.net/?f=E%3DQV)
So ![675=Q\times 1.5](https://tex.z-dn.net/?f=675%3DQ%5Ctimes%201.5)
![Q=450C](https://tex.z-dn.net/?f=Q%3D450C)
Now we have given charge on each particle ![=1.6\times 10^{-6}C](https://tex.z-dn.net/?f=%3D1.6%5Ctimes%2010%5E%7B-6%7DC)
So number of charge particle
Answer:
1. authority - power to enforce laws
2. unalienable - something that cannot be taken away
3. declaration - a forceful statement
4. self-government - the right to govern oneself
Explanation:
1. Authority- power to enforce laws
<u>It is the power that is being practice by either a person or a group of people over their subjects. </u>The person uses this power<em> in order to cause an action.</em> For example, the CEO of Mitsubishi will decide on what supply manufacturer they will choose. This means that he has the authority over this area. He does this in order for the company to achieve its organizational goal more efficiently.
2. Unalienable - This is also synonymous to the term "inalienable."
<u>This is something that cannot be taken away from a person, such as the right to live, to have liberty and to find happiness.</u> This is a popular term used in the "Declaration of Independence," in which American colonists disclosed their grievances under King George III in order to attain independence. This right cannot be revoked or transferred, nor is it negotiable.
3. Declaration - t<u>his is a forceful statement or an announcement of something that is deemed important. </u>This also considered an official statement and is disclosed to public for an intended purpose. Regarding specific cases, a declaration refers to stating the facts that serves as a ground to support the case. It can includes many sections that explains the reasons why actions were made.
4. Self-government -<u> </u><u>this is the ability of a person or group to do things on their own or have control without the influence or authority from outside. </u>When it comes to economy, this refers to the rule of the people. This can also be practiced in school, whereby students participate in making the school laws and enforcing them as well. This is a common characteristic for democratic countries where people has a say in the society.
A. Air, desk, water. sound travels the slowest through air and the fastest through liquids. solids are somewhere in the middle.
Answer:
2.14 s
Explanation:
The period is the time for 1 revolution. If it takes 21.4 seconds to make 10 revolutions, then it takes 2.14 seconds to make 1 revolution.
You can show this with a proportion:
t / 1 rev = 21.4 s / 10 rev
t = 2.14 s
At the boundary between air and glass, we can see mainly refraction ...
the path of the light bends as it crosses the boundary, and proceeds
from there in a different direction.
If we're very careful and make sensitive measurements, then we can also
detect transmission, some reflection, and a tiny bit of dispersion at the boundary.