a. the larger the current, the larger the magnetic field
Explanation:
The magnetic field produced by a current-carrying wire is given by the equation:
where
is the vacuum permeability
I is the current in the wire
r is the distance from the wire at which the field strength is calculated
From the equation, we notice the following points:
- The strength of the magnetic field is directly proportional to the current in the wire
- The strength of the magnetic field is inversely proportional to the distance from the wire
Therefore, the only correct option in the list is
a. the larger the current, the larger the magnetic field
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They provided the intensity in decibels for the problem, but they are unsure by what factor to increase it (I) to make the sound loud enough for the elderly person to hear.
Neglect f entirely.
The following equation must be used to convert decibels (dB) to I:
I=(10^(dB/10))*10^-12
Divide the elder person's dB by the younger person's dB after doing this for each dB.
After putting values and solving
we get,
1.8372093023.
So, the final answer is 1.8372093023.
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Answer:
Waves transfer energy, not matter
Explanation:
Answer:
2 m
Explanation:
The displacement of any body is the shortest distance in an object's path between its initial and final point.
The ball would travel 3 m from the point of throwing then fall down 5 m to the ground. The total distance traveled is 7 m.
The displacement of the ball will be the distance from the point of throwing to the ground i.e., 2 m as it is the shortest distance between the initial and final point of the ball's journey.
Answer: The voids between stars in our galaxy can be filled with tenuous clouds of gas and other molecules. ... That material gets "ripped away" from the galaxies by the force of gravity, and often enough it collides with other material.
HOPE IT HELPED:) HAVE A NICE DAY
