Answer:
h=32.1 km
Explanation:
<em>solution:</em>
using newton law of gravitational attraction and newton second law:


r= distance between two masses
at sea level
a=g

.............................(1)
.........................(2)
by substituting (2) and (1)
acceleration due to gravity at a distance r from the centre of the earth in terms of g (sea level)
so the weight of the object at a distance r from the centre of the earth (W=ma)
W=mg(Re^2/r^2)..........(3)
h the height above the surface of the earth: r=Re+h
putting the value of r in eq (3)
W=mg(Re/Re+h)^2
W=0.99 mg
solving for height h:
h=Re(1/√0.99)-(1))
h=32.1 km
I think it's false because the theory states that electrons flow from negative to positive. Since electrons are negatively charged, it follows that they are attracted by positively charged bodies and repelled by negatively charged bodies.
Answer:
Profile is a graphical representation of velocity distribution
Wing D (high camber and surface area, least weight) generated the most lift force and Wing C (most streamlined) generated the least drag force. It is concluded that the shape of a wing does affect the lift and drag of an airplane.
Answer:
- function sumNumbers(num){
- let sum = 0;
- for(let i=0; i <= num; i++){
- sum += i;
- }
- return sum;
- }
Explanation:
Firstly, let's create a function named <em>sumNumbers()</em> that take one input parameter, <em>num</em> (Line 1).
Declare a variable,<em> sum</em>, to hold the value of total number between 0 and the input number (Line 2). Initialize it with 0 value.
Create a for-loop to traverse through the numbers started from 0 till input number (Line 3). In the loop, add the each number to<em> sum</em> variable (Line 4).
At last, return the <em>sum</em> as output (Line 6).