If the object is negatively charged it means it has gained electron so negatively charged object has more number of electron than proton
If the object is positively charged it means it has lost electron so positively charged object has more number of proton than electron
Nonmetals! is your answer make me the brainiest please
Converting
releases
absorbs
cooling
transfer
liberating
Answer:
Explanation:
radius of circle r = 0.9 m.
(a ) In a motion on circular path , work done is zero because force ( centripetal force ) acts perpendicular to displacement .
( b )
Tension in string T = m ω²r
Putting the values
60 = .072 x ω² x 0.9
ω² = 926
ω = 30.4 rad /s
angle made in 20 revolutions θ = 20 x 2π = 126.6 rad
time taken = θ / ω
= 126.6 / 30.4
= 4.16 s .
