A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.00 s for the
1 answer:
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The concept needed to solve this problem is average power dissipated by a wave on a string. This expression ca be defined as
Here,
= Linear mass density of the string
Angular frequency of the wave on the string
A = Amplitude of the wave
v = Speed of the wave
At the same time each of this terms have its own definition, i.e,
Here T is the Period
For the linear mass density we have that
And the angular frequency can be written as
Replacing this terms and the first equation we have that
PART A ) Replacing our values here we have that
PART B) The new amplitude A' that is half ot the wavelength of the wave is
Replacing at the equation of power we have that
Answer:
37.725 A
Explanation:
B = magnitude of the magnetic field produced by the electric wire = 0.503 x 10⁻⁴ T
r = distance from the wire where the magnetic field is noted = 15 cm = 0.15 m
i = magnitude of current flowing through the wire = ?
Magnetic field by a long wire is given as
Inserting the values
i = 37.725 A