True, both humans and animals alike do have critical periods of development
Answer:
a. active volcanoes river valleys feeding into surface lakes of liquid water surfaces with very few impact.
Explanation:
I do believe it is the third choice
The wave speed completely depends on the characteristics and properties of the medium . . . physical properties for mechanical waves, electrical properties for electromagnedtic waves.
So if you want to change the speed of a wave, you have to change the medium . . . shoot it through some different kind of stuff. <em>(B) </em>
Answer:
Current, I = 1200 A
Explanation:
It is given that,
Length of the cylinder, l = 40 m
Radius of the metal wire, r = 4 mm = 0.004 m
Voltage source, V = 16 V
Resistivity of metal,
We know that the resistivity of any metal is given by the formula as :
R = 0.01336 ohms
Using ohm's law :
I = 1197.60 A
or
I = 1200 A
So, the current flowing in the cylindrical wire is 1200 A. Hence, this is the required solution.