The golf ball experiences a force of 1000 N while in contact with the golf club and moves away from the golf club at 30 m·s-1. Calculate the time during which the golf club was in contact with the ball.

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

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

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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