In Case 1, is the magnitude of the force exerted on block A by the platform greater than, less than, or equal to the magnitude of the force exerted on the platform by block A.
a. mag. of force on A by platform > mag. of force on platform by A
b. mag. of force on A by platform < mag. of force on platform by A
c. mag. of force on A by platform = mag. of force on platform by A

it is true because as we rotate around the way we rotate makes day come and because the moon is rotating around the earth that's what makes it night come. hope this .

it takes about 30 days for it to break down

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.