Answer:
the average speed of the car is 170 mph.
Explanation:
Given;
initial speed, u = 70 mph
time of motion, t₁ = 3 hours
final speed, v = 20 mph
time of motion, t₂ = 2 hours
The average speed of the car is calculated as;
Therefore, the average speed of the car is 170 mph.
Answer:
Explanation:
By conservation of the linear momentum:
m1*V1 = (m1+m2)*V2
Solving for V2:
The kinetic energies are:
Simplifying:
The ratio will be:
Answer:
Explanation:
You can always figure out something to say about a question like this if you have a formula to work with. Likely you do.
There are many ways it can be written
R = k * L / A
So here's the answer.
Resistance = k which depends of the properties of the material used to make the wire * the Length of the wire divided by the cross sectional area of the wire.
Answer:
The correct answer is "
".
Explanation:
The given problem seems to be incomplete. Please find the attachment of the complete query.
According to the question,
At point A, we have
⇒ 
or,
⇒ ![E_x = 9\times 10^9\times [\frac{6\times 10^{-9}}{15^2}\times \frac{9}{15}-\frac{8\times 10^{-9}}{20^2}\times \frac{16}{20} ]](https://tex.z-dn.net/?f=E_x%20%3D%209%5Ctimes%2010%5E9%5Ctimes%20%5B%5Cfrac%7B6%5Ctimes%2010%5E%7B-9%7D%7D%7B15%5E2%7D%5Ctimes%20%5Cfrac%7B9%7D%7B15%7D-%5Cfrac%7B8%5Ctimes%2010%5E%7B-9%7D%7D%7B20%5E2%7D%5Ctimes%20%5Cfrac%7B16%7D%7B20%7D%20%5D)
and,
⇒ 
or,
⇒ ![E_y = 9\times 10^9\times [\frac{6\times 10^{-9}\times 12}{15^2\times 15}+ \frac{8\times 10^{-9}\times 12}{20^2\times 20} ]](https://tex.z-dn.net/?f=E_y%20%3D%209%5Ctimes%2010%5E9%5Ctimes%20%5B%5Cfrac%7B6%5Ctimes%2010%5E%7B-9%7D%5Ctimes%2012%7D%7B15%5E2%5Ctimes%2015%7D%2B%20%5Cfrac%7B8%5Ctimes%2010%5E%7B-9%7D%5Ctimes%2012%7D%7B20%5E2%5Ctimes%2020%7D%20%5D)
Answer:
The pressure system is known as anticyclone.
Explanation:
Anticyclone is a weather phenomenon that is has a high pressure at it's center and the pressure decreases progressively as we move away from the center of the anti-cyclone.
The direction of rotation of these weather systems is in clockwise direction in the northern hemisphere of the earth and in anti-clockwise direction in the southern hemisphere of the earth. The rotation of these weather systems arise due to a force known as Coriolis's Force generated due to rotation of earth.
In maps the areas of higher pressures are indicated by letter H.
These weather systems effect the monsoon at the place at which they occur.
