Answer:
U = 1 / r²
Explanation:
In this exercise they do not ask for potential energy giving the expression of force, since these two quantities are related
F = - dU / dr
this derivative is a gradient, that is, a directional derivative, so we must have
dU = - F. dr
the esxresion for strength is
F = B / r³
let's replace
∫ dU = - ∫ B / r³ dr
in this case the force and the displacement are parallel, therefore the scalar product is reduced to the algebraic product
let's evaluate the integrals
U - Uo = -B (- / 2r² + 1 / 2r₀²)
To complete the calculation we must fix the energy at a point, in general the most common choice is to make the potential energy zero (Uo = 0) for when the distance is infinite (r = ∞)
U = B / 2r²
we substitute the value of B = 2
U = 1 / r²
Answer:
To both observers, the land opposite them is moving to the right.
Explanation:
I have this class too. and there is also a quizlet with all the answers to the rest of the other questions. Trust me its right .
https://quizlet.com/261219090/oce-1001-chapter-2-flash-cards/
If the mass of the cylinder increases, the temperature of the water increases, because a greater mass means the cylinder has more potential energy that can be converted to thermal energy, increasing the temperature of the water.
Answer:
The electric field strength is 
Solution:
As per the question:
Area of the electrode, 
Charge, q = 50 nC = ![50\times 10^{- 9} C[/etx]Distance, x = 2 mm = [tex]2\times 10^{- 3} m](https://tex.z-dn.net/?f=50%5Ctimes%2010%5E%7B-%209%7D%20C%5B%2Fetx%5D%3C%2Fp%3E%3Cp%3EDistance%2C%20x%20%3D%202%20mm%20%3D%20%5Btex%5D2%5Ctimes%2010%5E%7B-%203%7D%20m)
Now,
To calculate the electric field strength, we first calculate the surface charge density which is given by:
Now, the electric field strength of the electrode is:
where
Answer:
Explanation:
The Saffir-Simpson Hurricane Wind Scale gives 1 to 5 rating based on a hurricane's wind speed, storm surge and potential property damage. It rates according to categories. When placed at Hurricanes of Category 3 and above, they are termed major catastrophic hurricanes because of their potential for loss of life and damages of property. Ratings at Category 1 and 2 storms are dangerous but can be prevented by following directed measures.
Florida situated directly in the hurricane at east coast , had experiened Category 1- Category 5 ratings from hurricane and noticed in Land fall in Florida since 1894 with Winds ranging from 74-95 mph with some dangerous damages which can lead damages to Well-built homes, dedtroying roofs , Uprooting shallow rooted trees, and causing power outages due to destruction of poles
to 157 mph or higher causing Catastrophic damages making the area inhabitable due to loss of life and properties.
For example, Hurricane Dorian in September 2019 attacked Florida’s east coast resulting to a Category 2 storm producing tropical storm force winds,heavy rain and storm surge leading to damages of roof of building and disruption of power poles.
