the scientific study of natural forces such as light, sound, heat, electricity, pressure, etc.
Answer:
The greater the velocity, the greater the Force needs to be, and the greater the fiction is
Explanation:
I don't know what you are working on so here are a few responses
Explanation:
It is given that,
= -40 mi/h,
= -40 mi/h
The negative sign indicates that x and y are decreasing.
We have to find
. Equation for the given variables according to the Pythagoras theorem is as follows.
![z^{2} = x^{2} + y^{2}](https://tex.z-dn.net/?f=z%5E%7B2%7D%20%3D%20x%5E%7B2%7D%20%2B%20y%5E%7B2%7D)
Now, we will differentiate each side w.r.t 't' as follows.
![2z\frac{dz}{dt} = 2x\frac{dx}{dt} + 2y\frac{dy}{dt}](https://tex.z-dn.net/?f=2z%5Cfrac%7Bdz%7D%7Bdt%7D%20%3D%202x%5Cfrac%7Bdx%7D%7Bdt%7D%20%2B%202y%5Cfrac%7Bdy%7D%7Bdt%7D)
or, ![\frac{dz}{dt} = \frac{1}{z}(x\frac{dx}{dt} + y\frac{dy}{dt})](https://tex.z-dn.net/?f=%5Cfrac%7Bdz%7D%7Bdt%7D%20%3D%20%5Cfrac%7B1%7D%7Bz%7D%28x%5Cfrac%7Bdx%7D%7Bdt%7D%20%2B%20y%5Cfrac%7Bdy%7D%7Bdt%7D%29)
So, when x = 4 mi, and y = 3 mi then z = 5 mi.
As, ![\frac{dz}{dt} = \frac{1}{z}(x\frac{dx}{dt} + y\frac{dy}{dt})](https://tex.z-dn.net/?f=%5Cfrac%7Bdz%7D%7Bdt%7D%20%3D%20%5Cfrac%7B1%7D%7Bz%7D%28x%5Cfrac%7Bdx%7D%7Bdt%7D%20%2B%20y%5Cfrac%7Bdy%7D%7Bdt%7D%29)
= ![\frac{1}{5}(4 \times (-40) + 3 \times (-40))](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D%284%20%5Ctimes%20%28-40%29%20%2B%203%20%5Ctimes%20%28-40%29%29)
= ![\frac{-140 - 120}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B-140%20-%20120%7D%7B5%7D)
= 52
Thus, we can conclude that the cars are approaching at a rate of 52 mi/h.
Is proportional to the CHANGE.
hope this helps
The pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c is 4.1atm.
Therefore, option A is correct option.
Given,
Mass m = 14g
Volume= 3.5L
Temperature T= 75+273 = 348 K
Molar mass of CO = 28g/mol
Universal gas constant R= 0.082057L
Number of moles in 14 g of CO is
n= mass/ molar mass
= 14/28
= 0.5 mol
As we know that
PV= nRT
P × 3.5 = 0.5 × 0.082057 × 348
P × 3.5 = 14.277
P = 14.277/3.5
P = 4.0794 atm
P = 4.1 atm.
Thus we concluded that the pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c is 4.1atm.
learn more about pressure:
brainly.com/question/22613963
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