What form of ser should I put!?

Why are windows so white like white people

The mayan calendar is complex and incorporates three different cycles based on the coordinated movements of the sun, moon and 1.venus 2.mars 3.stars 4.pluto

Newton's second lawinstruction activecalculating mass using a free-body diagram with multipleforcestwo horses, thunder and misty, are accelerating awagon 1.3 m/s2. the force of friction is 75 n. thunderis pulling with a force of 1,000 n, while misty is pullingwith a force of 800 n. the force of gravity is 14,700 nand the normal force is 14.700 n. what is the mass ofthe wagon? round the answer to the nearest wholenumberf = 14,700 nf = 800 nf = 1,000 nf = 75 ndone