Consider formula a to be v = startfraction 2 pi r over t endfraction and formula b to be v2 = gstartfraction 2 pi r over t endfraction. write the letter of the appropriate formula to use in each scenario.

determine the tangential speed of the moon given the mass of earth and the distance from earth to the moon.

determine the tangential speed of a satellite that takes 90 minutes to complete an orbit 150 km above earth’s surface.

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

i think that it is c, d, and e, hope this

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.