Answer:
The correct answer to the following question will be "
".
Explanation:
According to the question,
⇒ ![TCos \theta-F_{s}=0](https://tex.z-dn.net/?f=TCos%20%5Ctheta-F_%7Bs%7D%3D0)
⇒
...(equation 1)
![\sum F_{y}](https://tex.z-dn.net/?f=%5Csum%20F_%7By%7D)
⇒ ![TSin \theta+F_{N}=m_{g}](https://tex.z-dn.net/?f=TSin%20%5Ctheta%2BF_%7BN%7D%3Dm_%7Bg%7D)
⇒
...(equation 2)
Now,
From equation 1 and equation 2, we get
⇒ ![T_{m} Cos \theta = \mu_{s}F_{N}](https://tex.z-dn.net/?f=T_%7Bm%7D%20Cos%20%5Ctheta%20%3D%20%5Cmu_%7Bs%7DF_%7BN%7D)
On putting the value of
, we get
⇒ ![T_{m} Cos\theta = \mu_{s}(M_{g}-T_{m}Sin \theta)](https://tex.z-dn.net/?f=T_%7Bm%7D%20Cos%5Ctheta%20%3D%20%5Cmu_%7Bs%7D%28M_%7Bg%7D-T_%7Bm%7DSin%20%5Ctheta%29)
⇒ ![\mu_{s}=\frac{T_{m}Cos\theta}{M_{g}-T_{m}Sin\theta}](https://tex.z-dn.net/?f=%5Cmu_%7Bs%7D%3D%5Cfrac%7BT_%7Bm%7DCos%5Ctheta%7D%7BM_%7Bg%7D-T_%7Bm%7DSin%5Ctheta%7D)
Answer:
The answer is related to physics
Explanation:
In physics, rest is the state of an object being stationary relative to a particular frame of reference or another object; when the position of a body with respect to its surroundings does not change with time it is said to be "at rest". According to the theory of relativity, it is said that an object is "at rest relative to" another. For example, a train decelerates approaching a station and eventually comes to rest alongside the platform. The train can be said to be "at rest with respect to the station", or, as the correct frame of reference is usually implicit and/or provided by context, simply "at rest". In reality, there is nothing at absolute rest. For example, Earth's gravitation constantly pulls objects toward its surface, while Earth is one of the objects the Sun constantly pulls towards itself, causing it to orbit the Sun; the Sun, in turn, orbits the center of the Milky Way; and so on.
With the presence of science during the scientific revolution, people were no longer very permissive to ideas about nature that were solely based on someone's perception. It should be scientifically studied and have undergone scientific method for it to be generally accepted as true.
Answer:
The amount of time needed for this heating to occur is 126.25 min
Explanation:
Given;
power required to heat the room = 2kW
volume of the room = 5 m X 5 m X 6 m = 150 m³
atmospheric pressure at sea level = 101 Kpa
Internal energy available in this room, E = PV
= 101 Kpa*150m³
= 15,150 Kpa.m³ = 15,150 KJ
P*t = E
where;
t is the time required to heat this room
1 kW = 3600 kJ/h
2 kW = 7200 kJ/h
![t = \frac{E}{P} = \frac{15150 KJ}{7200\frac{KJ}{h}} =2.104 {hours} = 126.25 min](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7BE%7D%7BP%7D%20%3D%20%5Cfrac%7B15150%20KJ%7D%7B7200%5Cfrac%7BKJ%7D%7Bh%7D%7D%20%3D2.104%20%20%7Bhours%7D%20%3D%20126.25%20min)
Therefore, the amount of time needed for this heating to occur is 126.25 min
Answer:
I would say it is recycling nonrenewable minerals instead of throwing them away.
Explanation:
using grocery bags only once before disposing them is also bad, but plastic is not really a resource compared to how minerals are resources.
if we recycle nonrenewable resources instead of throwing them away we would damage true resources.