Answer:
A =150
I think it will help you bro
The pitch of a sound you hear depends on the frequency of the sound wave. A high frequency sound wave has a high pitch, and a low frequency sound wave has a low pitch.
Answer:

Explanation:
If you are asking for how much a cubic meter of iron would weight, you need to find its density.
The density of iron taken from the periodic table is
, therefore a single cubic meter would weight 7870 kg, which written in scientific notation would be 
Explanation:
We have,
Radius of pizza, r = 18 m
Potential difference, V = 575 V
Stored electrical potential energy, E = 3.31 J
The area if an air-filled capacitor with parallel plates is equal to that of the pizza. It means, 
The stored potential energy in a capacitor is given by :

C is capacitance

The formula of the capacitance of a parallel plate capacitor is given by :

d is plate separation of this capacitor
