The speed of a 16cm wave with a period of 8 seconds is 2cm/s
<h3>How to determine the speed</h3>
Using the formula;
Speed = distance ÷ time
Distance = 16cm
time = 8 seconds
Substitute into the formula
Speed = 16 ÷ 8
Speed = 2 cm/s
Therefore, the speed of a 16cm wave with a period of 8 seconds is 2cm/s
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Answer:

Explanation:
It is given that,
Angular speed of the football spiral, 
Radius of a pro football, r = 8.5 cm = 0.085 m
The velocity is given by :


v = 3.68 m/s
The centripetal acceleration is given by :



So, the centripetal acceleration of the laces on the football is
. Hence, this is the required solution.
Answer:

Explanation:
From the question we are told that:
Mass of cart A 
Mass of cart B 
Speed of cart AA
Generally the equation for velocity of A after collision
is mathematically given by




Answer:
The electrical force of attraction between the balloons is
.
Explanation:
Given that,
Charge 1, 
Charge 2, 
Distance between the charges, d = 0.65 m
We need to find the electrical force of attraction between two balloons. It is given by the formula as :

So, the electrical force of attraction between the balloons is
. Hence, this is the required solution.