Answer:
There are eight planets in our Solar System.
Explanation:
The force of friction is given by:
f = μR, where μ is the friction coefficient and R is the reaction force, which will be equal to the weight.
100 = μ x 130
μ = 0.77
The shape is connected in parallel so;
5.1) Ans;

5.2) Ans;

I hope I helped you^_^
Your hypothesis can be that the group with calculators would finish faster than the group without calculators.
<span>The waves with the lowest energy and lowest frequencies of the electromagnetic spectrum are the "Radio waves"
So, option B is your answer
Hope this helps!
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