Answer:
22/0.50=44
Explanation:
average speed= distance / time
Answer:

Explanation:
Given

r=2cm
Now angular velocity is given by 

Now linear velocity(v) is given =

Now tangential component of acceleration is given by

at t=0

radial component of acceleration is given by



at t=0

Answer:
false
Explanation:
only chemical changes can produce new substances
This question involves the concept of Colomb's Law and electrostatic force.
The electrostatic force will be "0.2 N".
<h3>COLOMB'S LAW:</h3>
According to Colomb's Law, every charge exerts an electrostatic force on the other charge, which is directly proportional to the product of the magnitudes of both the charges and inversely proportional to the square of the distance between them.

where,
- F = electrostatic force
- k = Colomb's constant = 9 x 10⁹ N.m²/C²
- q₁ = magnitude of first charge
- q₂ = magnitude of second charge
- r = distance between charges
In case of +2 C charges:
- q₁ = q₂ = 2 C
- r = ?
- F = 0.1 N
Therefore,

Now, for the second case:
- F = ?
- q₁ = 2 C
- q₂ = 4 C
- r² = 3.6 x 10¹¹ m²
Therefore,

<u>F = 0.2 N</u>
Learn more about Colomb's Law here:
brainly.com/question/9774180
Answer:
Below in bold.
Explanation:
1. Speed = distance / time
= 100 / 9.84
= 10.16 m/s.
Speed = 200/19.32 = 10.35 m/s.
Speed = 400/43.49 = 9.20 m/s.