5. Harrison claims that waves travel faster when the particles within the medium are farther apart. Is Harrison correct?
1 answer:
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Answer with Explanation:
Mass of pendulum bob, m=0.453 kg
Speed, 2.58 m/s
a.r=75.1 cm==0.751 m
Tension in the pendulum cable is given by
Tension=Centripetal force+force due to gravity
Where
Substitute the values
b.When the pendulum reaches its highest point,then
Final velocity,
According to law of conservation of energy
Substitute the values
The angle mad by cable with the vertical=
c.When the pendulum reaches at highest point then
Acceleration, a=0
Therefore, the tension in the pendulum cable
Substitute the values
Answer:
Explanation:
Given that,
B(t) = B0 cos(ωt) • k
Radius r = a
Inner radius r' = a/2 and resistance R.
Current in the loop as a function of time I(t) =?
Magnetic flux is given as
Φ = BA
And the Area is given as
A = πr², where r = a/2
A = πa²/4
Then,
Φ = ¼ Bπa²
Φ(t) = ¼πa²Bo•Cos(ωt)
Then, the EMF is given as
ε(t) = -dΦ/dt
ε(t) = -¼πa²Bo • -ωSin(ωt)
ε(t) = ¼ωπa²Bo•Sin(ωt)
From ohms law,
ε = iR
Then, i = ε/R
I(t) = ¼ωπa²Bo•Sin(ωt) /R
This is the current induced in the loop.
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