It means every thing is made out of Atoms and some things are element componds so elements are the "backbone" of the compounds.
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go here this is a really good video to help with balacing chemical equations
Complete Question
The complete question is shown on the first uploaded image
Answer:
a) 58 Hz b) 7.73 mV
Explanation:
From the complete question we are given that
Radius of the semi circle , a = 3.0 cm = (3.0)(1 × m/1 cm)
=3.0 × m
Angular speed ,w = 58 rev/s
= (58 rev/s)(2π rad /1 rev)
= 364.4 rad/s
Magnetic field, B = 15 mT
= (15 mT)(1 × T/ 1 mT)
= 15 × T
a) f = 58 rev/s
= 58 Hz
b) The Induced emf, ∈ = ω<em>Bπ</em> /2
= T)(π)(3.0 × m)^2)÷2[/tex]
= 0.007728 V
= 7.73 mV
Answer:
A. 4.5 x 10^-5 kg.m2
B. 108 x 10^-3 kg.m2
C. 54 x 10^-5
Explanation:
A. I = m(r^2)
point mass m = 0.005 g = 5 x 10^-6 kg
I = (5 x 10^-6 kg) x (3 m)^2 = (5 x 10^-6 kg) x 9 m^2 = 4.5 x 10^-5 kg.m2
B. I = m(r^2)
point mass m = 0.3 kg = 3 x 10^-1 kg
I = (3 x 10^-1 kg) x (0.6 m)^2 = (3 x 10^-1 kg) x 0.36 m^2 = 108 x 10^-3 kg.m2
C. KE = 1/2I(w^2)
KE = 1/2(3 x 10^-2 kg.m^2)(0.6 rad/s)^2 = 54 x 10^-5
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