1. A rock of granite has a mass of 50 kg. if it’s weight in water
1 answer:
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Answer:
The value is
Explanation:
From the question we are told that
The length of the solenoid is
The magnetic field is
The current is
The desired temperature is
Generally the magnetic field is mathematically represented as
=>
Here is the permeability of free space with value
So
=>
The radius of the sphere in meters is ,r =
Think about the angle the ground and the shadow make. Since the sun's beams are parallel, the angle created by the stick's shadow is also equal. Since the stick is 1 m high and its shadow is 2 m long, we know that the stick's angle is arctan 1/2. Therefore, by thinking of a right-angled triangle,
r/10 = tan [arctan(1/2)] = tan (1/2)
Since, tan (θ/2) = 1-cos(θ) / sin(θ)
we find that,
r/10 =
Hence, r =
So, the radius of the sphere in meters is ,r =
Learn more about radius (r) of the sphere here;
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