Answer:
a) 9.0
Explanation:
The force between two point charges, obeys Coulomb's Law, which can be written as follows:

As it can be seen, if the separation between the charges remains the same, the new value of the force will be directly proportional to the product of the charges.
If both charges are tripled, the mutual force between them will be changed in a factor equal to 3.0*3.0 = 9.0
Answer:
here's the pdf for it
IB QuestionbankExplanation:
Answer:
128.8m/s
Explanation:
74 × 60 = 4440 convert minutes to seconds
572000/4440 = 128.82882... speed=distance/time
Answer:
Horizontal component of velocity = 241.61 m/s
Explanation:
Given that,
Velocity of a jetliner is 245 m/s
The vertical component of the plane's velocity is 40.6 m/s, 
We need to find the magnitude of the horizontal component of the plane velocity.
The resultant velocity is given by :

Where,
is the horizontal component of the plane velocity

So, the magnitude of the horizontal component of the plane velocity is 241.61 m/s.