Answer:5 Neither: both negative and positive charge are present simultaneously in all solid materials on Earth
Explanation:
When we rub a glass rod with silk cloth then some of the electrons from glass rods are stripped away to the silk cloth. These electrons are loosely bound to the silk rod that is why they easily transferred to silk cloth.
There is no net charge because the charge is induced when we rub the cloth and charge are separated therefore we able to notice these charges.
Answer:
0.0016 cm
Explanation:
= Thermal coefficient of expansion of brass = 
= Thermal coefficient of expansion of glass = 
= Change in temperature = 
= Initial radius = 4 cm
Change in radius of material is given by
Difference in radii of the lid and jar
The size of the gap is 0.0016 cm or 0.000016 m
Answer:
3.62 V
Explanation:
L = 80 cm = 0.8 m
f = 15 rps
B = 60 m T = 0.060 T
ω = 2 x π x f = 2 x 3.14 x 15 = 94.2 rad/s
v = r ω
here, r be the radius of circular path. Here r = length of rod = L
v = 0.80 x 94.2 = 75.36 m/s
The motional emf is given by
e = B v L = 0.060 x 75.36 x 0.8 = 3.62 V
When the Skydiver jump out a plane, his Potential Energy is being converted or transform into Kinetic energy due to gravity. Hope this helps
Answer:
112m/s
Explanation:
14x8=112 therefore meaning the zebra would run 112m/s
