Answer:
We have that θ is the angle that makes the normal of the loop and the direction of the magnetic field.
This means that if θ = 0°, the plane in which the loop of wire lies is totally perpendicular to the magnetic field. (or the face of the loop points in the same direction than the field)
Now, the magnetic flux can be calculated as:
Where dA is the differential of area, and we have a dot product, then we have:
B.dA = B*Acos(θ)ds
ds is a differential of surface.
Now, the flux will be maximum when cos(θ) is also a maximum.
And the maximum of the cosine is:
Cos(0°) = 1.
decreasing until cos(90°) = 0
Now, the options given are:
30°, 45°, 60° and 90°.
Then in this range, the maximum flux will occur at the angle closer to 0°, then the correct option is θ = 30°
Inclined Plane.Because an inclined plane is a flat,sloped surface. And a ramp is a perfect example of an inclined plane.
The correct answer is B. Measurable
Explanation:
The use of science to investigate a phenomenon implies using measurements and observations to better understand a phenomenon or test a hypothesis. Moreover, science focuses on natural phenomena that can be objectively studied through measurement instruments such as a thermometer, balance, hydrometer, etc.
In this context, for a phenomenon to be studied by science this needs to be measurable because the use of precise instruments as wells as numbers allow scientist to analyze and understand a phenomenon. Moreover, phenomena that depend on personal perspectives and cannot be measure is considered as non-scientific.
I believe it is Acoustics, the real name for it would be like Reverberation. But go with Acoustics. :)
Answer:
Vectors have a size and direction. Each of the existing vector quantity has a magnitude and a direction. Having direction along with the magnitude is the difference of a vector quantity from a scalar quantity. Vectors are indicates with arrows.
