on closing the jaws of a vernier callipers zero of the vernier scale is on the right side to its main scale such that the 4th divisions of its vernier scale concides with one of the mian scale find its error and zero correction​

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

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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find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2