The reason weather balloons are only partially inflated is to allow room for the helium in the balloon to expand.
Explanation:
It is given that,
Length of rod, l = 14 cm = 0.14 m
Total charge, 
We need to find the magnitude and direction of the net electric field produced by the charged rod at a point 36.0 cm to the right of its center along the axis of the rod, z = 36 cm = 0.36 m
Electric field at the axis of rod is given by :

Where
is the linear charge density, 
So, 

E = −7849988.22 N/C
or

Negative sign shows the direction of electric field is inward in all direction. Hence, this is the required solution.
<h2>mass = 25kg</h2><h2>---------------------------------</h2>
force = 75N --- (<em>g</em><em>i</em><em>v</em><em>e</em><em>n</em><em>)</em>
acceleration = 3m/s² ---- (<em>g</em><em>i</em><em>v</em><em>e</em><em>n</em><em>)</em>
<h3>FORCE = mass × acceleration</h3>
75N = mass × 3m/s²
mass = 75÷3
<h3>mass = 25kg</h3><h2>-----------------------------</h2><h2>FOLLOW ME</h2>
Answer:nevis design because it has the most surface area
Explanation:
because it has the most surface area
Answer:
c. 43 m/s
Explanation:
Given the following data;
Displacement, S = 90 meters
Time, t = 5.55 seconds
To find the initial velocity;
We would use the second equation of motion given by the formula;

Where;
- S represents the displacement or height measured in meters.
- u represents the initial velocity measured in meters per seconds.
- t represents the time measured in seconds.
- a represents acceleration measured in meters per seconds square.
We know that acceleration due to gravity is -9.8m/s² because the direction is downward.
Substituting into the equation, we have;



Rearranging the equation, we have;



Initial velocity, u = 43.41 ≈ 41 m/s