Vectors: A vector Ä has magnitude of 29 units and points in the positivo y direction.
When vector B is added to Ä, the resultant vector A + B points in the
negative y-direction with a magnitude of 14 units. Find the magnitude and
direction of vector B
I
magnitude = 43 units, and direction = negative y direction
magnitude = 43 units, and direction = positive y direction
magnitude = 43 units, and direction = negative x direction
O magnitude = 43 units, and direction = positive x direction
magnitude = 15 units, and direction = negative y direction
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when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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