The scientific principle which explains the observation that the amount of heat transfer accompanying a change in one direction
1 answer:
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Answer:
The value is
The direction is into the surface
Explanation:
From the question we are told that
The mass density is
The coefficient of kinetic friction is
The current the wire carries is
Generally the magnetic force acting on the wire is mathematically represented as
Here is the frictional force which is mathematically represented as
While is the magnetic force which is mathematically represented as
Here is the angle between the direction of the force and that of the current
So
So
=>
=>
=>
Apply the right hand curling rule , the thumb pointing towards that direction of the current we see that the direction of the magnetic field is into the surface as shown on the first uploaded image
Answer: 24.24 m
Explanation:
A player throws football 50.0 m at 61° North of west. we will write this in terms of horizontal and vertical components.
Horizontal component: 50 cos 61° = 24.24 m which is westwards
Vertical component: 50 sin 61° = 43.73 m which towards North.
Refer to diagram below.
Thus, the westward component of displacement of the football is the horizontal component of the displacement = 24.24 m.
