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nignag [31]
3 years ago
13

Using the periodic table, predict the formulas of stable ionic compounds. Select THREE that are correct.

Physics
2 answers:
AleksandrR [38]3 years ago
6 0
The first one,second one and the forth one are correct
Vlad1618 [11]3 years ago
5 0
I’m pretty sure the first 1 bad the fourth 4
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A child on a skateboard experiences a 75 N force with an acceleration of 1.5 m/s2.
cupoosta [38]

Answer:

The mass of the child + skateboard is 50 kg

Explanation:

In this problem, we can apply Newton's second law:

F = ma

where

F is the net force on a system

m is the mass of the system

a is the acceleration of the system

In this problem, our system is the child + the skateboard. The net force on them is

F = 75 N

and their acceleration is

a=1.5 m/s^2

So we can re-arrange the equation above to find their combined mass:

m=\frac{F}{a}=\frac{75}{1.5}=50 kg

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Answer:

A - Crest,  B - amplitude,  C - wavelength,  D - trough

Explanation:

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mass gram, time sec, temp kelvin, vol liter, dens grams/cm3

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I think these are the answers

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