The cold air sinks as it is heavier
Therefore, the car is moving with a velocity of 5 m/s.
Answer:
a.
b.Attractive
Explanation:
We are given that


Mass of an electron,
Mass of proton,
Distance between electron and proton,R=

a.Substitute the values then we get


b.We know that like charges repel to each other and unlike charges attract to each other.
Proton and electron are unlike charges therefore, the force between proton and electron is attractive.
Answer: 
Explanation:
Given
final velocity at takeoff 
Acceleration of the plane can be 
Initial velocity is zero for the plane i.e. 
Using the equation of motion
![\Rightarrow v^2-u^2=2as\quad [\text{s=displacement}]\\\text{Insert the values}\\\Rightarrow (28.1)^2-0=2\times 2\times s\\\\\Rightarrow s=\dfrac{789.61}{4}\\\\\Rightarrow s=197.40\ m](https://tex.z-dn.net/?f=%5CRightarrow%20v%5E2-u%5E2%3D2as%5Cquad%20%5B%5Ctext%7Bs%3Ddisplacement%7D%5D%5C%5C%5Ctext%7BInsert%20the%20values%7D%5C%5C%5CRightarrow%20%2828.1%29%5E2-0%3D2%5Ctimes%202%5Ctimes%20s%5C%5C%5C%5C%5CRightarrow%20s%3D%5Cdfrac%7B789.61%7D%7B4%7D%5C%5C%5C%5C%5CRightarrow%20s%3D197.40%5C%20m)
Thu,s the minimum length must be 
The resistance of the 1000 W microwave oven that gets plugged into a 110 v outlet will be 10 ohms.
<h3>What is resistance?</h3>
Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
P is the power= 1000 W
V is the voltage= 110 V
I is the current
R is the resistance
The resistance is found by the formula;

Hence, the resistance value will be 10 ohms.
To learn more about the resistance, refer to the link;
brainly.com/question/20708652
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