Answer:A the two wire will attract each other
Explanation:
When current is flowing in a wire it is surrounded by magnetic field whose direction can be given by right hand thumb rule.
If current is in direction of your thumb then wrapping of fingers will give the direction of magnetic field.
If two wires with current in same direction flows then the combined magnetic field will be constructive in nature and thus they attract each other.
force on second wire due to first wire is
which will be towards the first wire
Answer:
Explanation:
We shall represent all the forces in vector form .
Force of 95 pounds
F₁ = 95cos100 i + 95sin100j
= -16.5 i +93.55 j
force of 75 pounds
F₂ = 75cos200 + 75sin200j
= -70.47 i - 25.65 j
force of 146 pounds
F₃ = 146cos300 i + 146sin300j
= 73i -126.44 j
Resultant force
R = F₁+ F₂ + F₃
= -16.5 i +93.55 j -70.47 i - 25.65 j +73i -126.44 j
= -13.97 i - 58.54 j
Magnitude of R = √ ( 13.97² + 58.54² )
= 60.18
If Ф be angle of resultant with axis
tanФ = - 58.54 / -13.97
Ф = 76.57 + 180 = 256.57 , because both x and y components are negative. So the resultant will be in third quadrant.
It is called the specific latent heat of fusion. C.
This is the heat change required in changing 1kg of a solid to its liquid and it occurs at the melting point. It is not associated with temperature change.
If it is to convert 1kg of liquid to vapor at its boiling point it is called the latent heat of vaporization.<span />
Explanation:
According to the law of conservation of energy,
......... (1)
As we know that, P.E = mgh
and, K.E = 
Therefore, putting these values of P.E and K.E into equation (1) as follows.
Now, initial case is that its starts with 50.3 m/s at bottom.
P.E = m and PE = 0
And, as it reaches the height h,
P.E = mgh
So, K.E will be m
Hence, speed = 6 m/s
Answer:
heat and sound.
Explanation:
Though some would argue that the heat is not useful. I guess it depends on if your hands are cold.
