3 years ago

Which are strong bases? Check all that apply. HCI NaOH NH3 H2CO3 ΠΗΝΟΣ OKOH

Physics

1 answer:

Whitepunk [10]3 years ago

8 0

NaOH is a strong base. Ammonia is a weak base if im not wrong. I do not understand the last 2 notations

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The net force on the student is A) -294 N

Explanation:

Neglecting air resistance, there is only one force acting on the student: the force of gravity, which is given by

$F=mg$

where

m is the mass of the student

g is the acceleration of gravity

In this problem, we have:

m = 30 kg is the mass of the student

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Substituting, we find the force of gravity on the student:

$F=(30)(-9.8)=-294 N$

And since this is the only force acting on the student, it is also the net force on him.

Learn more about gravitational force:

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Lets se

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Answer: J.J Thomson

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