Answer:
B
Explanation:
The capacitor is a component which has the ability to store energy in the form of an electrical charge making a potential difference on those two metal plates
A capacitor consists of two or more parallel conductive (metal) plates. They are electrically seperated by an insulating material (ex: air, mica,ceramic etc.) which is called as Dielectric Layer
Due to this insulating layer, DC current can not flow through the capacitor.But it allows a voltage to be present across the plates in the form of an electrical charge.
<span>You are given an applied force of 110 n with an angle of 30</span>°<span> with the ground. Since the force is not perpendicular or parallel to the sled then you will have two components. These components are in sine and cosine form.
for parallel component
x = rcos</span>β
<span>x = 110cos30</span>°
<span>x = 95.26
for the perpendicular component
y = rsin</span>β
<span>y = 110sin30</span>°
<span>y = 55</span>
Answer:
The intensity I₂ of the light beam emerging from the second polarizer is zero.
Explanation:
Given:
Intensity of first polarizer = Io/2
For the second polarizer, the intensity is equal:
Given:
rod of circular cross section is subjected to uniaxial tension.
Length, L=1500 mm
radius, r = 10 mm
E=2*10^5 N/mm^2
Force, F=20 kN = 20,000 N
[note: newton (unit) in abbreviation is written in upper case, as in N ]
From given above, area of cross section = π r^2 = 100 π =314 mm^2
(i) Stress,
σ
=force/area
= 20000 N / 314 mm^2
= 6366.2 N/mm^2
= 6370 N/mm^2 (to 3 significant figures)
(ii) Strain
ε
= ratio of extension / original length
= σ / E
= 6366.2 /(2*10^5)
= 0.03183
= 0.0318 (to three significant figures)
(iii) elongation
= ε * L
= 0.03183*1500 mm
= 47.746 mm
= 47.7 mm (to three significant figures)
<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
