Answer:
Explanation:
Magnetic field due to a long wire
= 10⁻⁷ x 2i / r where i is current in the wire and r is distance of the point from the wire
In the given case magnetic field
B = 10⁻⁷ x 2i / r
= 10⁻⁷ x 2x 1.3 / .8 x 10⁻²
= 3.25 x 10⁻⁵ T
= 32.5 x 10⁻⁶ T
It will create a deflecting torque on the compass needle
Let after turning by angle θ , equilibrium point is reached
at this point , deflecting torque = restoring torque by earth's magnetic field
MB cosθ = MHsinθ , M is magnetic moment of magnetic needle , H is horizontal component of earth's magnetic field.
Tanθ = B / H
= 32.5 / 29
=1.20
θ = 50 degree approx .
The answer is A. <span>Some work input is used to overcome friction. </span>
Answer:
253 years
Explanation:
a = Distance in Astronomical units from the sun = 40 AU
P = Orbital period in years
From Kepler's law we have
The orbital period of the Kuiper belt object is 253 years.
Answer:
A
Explanation:
When molecules are heated they are more spread out and they move faster.
Extension of the elbow? im not sure