Which of the following types of mirrors has an optical axis?
1 answer:
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Explanation:
It is given that,
Length of the copper wire, l = 4.4 m
Diameter of copper wire, d = 1.3 mm = 0.0013 m
Radius of copper wire, r = 0.00065 m
The resistivity of the copper wire,
We need to find the resistance of the copper wire. It is given by :
R =0.055 ohms
So, the resistance of the copper wire is 0.055 ohms. Hence, this is the required solution.
<u>Answer:</u>
Mass of base ball
<u>Explanation:</u>
Circumference of baseball = 2πr = 23 cm
So radius of baseball = 3.66 cm = m
Mass per unit volume of baseball = Mass per unit volume of neutron or proton.
Mass of proton = kg
Diameter of proton = m
Radius of proton = m
Volume of ball =
Now substituting all values in Mass per unit volume of baseball = Mass per unit volume of neutron or proton.
So mass of base ball