Two very long, straight, parallel wires carry currents that are directed perpendicular to the page as shown in Figure 7. Wire 1 carries a current I1 into the page (in the –z direction) and passes through the x axis at x = +a. Wire 2 passes through
the x axis at x = –2a and carries an unknown current I2. The total magnetic field at the origin due to the current-carrying wires
has the magnitude 2μ0I1/(2πa). The current I2 can have either of two possible values. (a) Find the value of I2 with the smaller
magnitude, stating it in terms of I1 and giving its direction. (b) Find the other possible value of I2.​

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  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s