Mass divided by volume
Piensa así M
--- = D
V
Como un corazón
Masa división por volumen igual a densidad
Answer
The image formed by a concave mirror will be virtual, erect and magnified when the object is placed only between the pole and the principal focus of the mirror.
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Answer:
The total number of charge pair without double counting is 6.
Explanation:
Given that,
Number of proton = 2
Number of electron = 2
We need to calculate the total number of charges in Hydrogen atom
Using formula for number of charges



Number of charge in pair is

We need to calculate the total number of possible combination of pairs without double counting
Using formula of combination

Where, n = number of charges
r = number of charges per pair
Put the value into the formula




Hence, The total number of charge pair without double counting is 6.
Given:
f1 = 20 Hz
f2 = 20000 Hz
speed of sound at 20 degrees celcius = 343 m/s
Solution:
for f1 = 20 Hz,
Using the equation:
lambda = speed of sound / f1 = 343 / 20 = 17.15 m
For f2:
lambda = speed of sound / f2 = 343 / 20000 = 0.01775 m
Therefore the wavelength range of audible sound in air would be 17.15 m to 0.01775 m.
1.velocity and acceleration
2.
3.inertia
4.
5.speed