Marshall wants to remove a tree stump from the ground. To do this he puts one end of a long beam under the stump and puts all his weight on the other end. His weight is just enough to lift the stump. The stump weighs 400 N. Marshall weighs 250. What is the mechanical advantage of the long beam Marshall is using?

Kara has a plant that produces either purple or white flowers. she crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. which result would be true of all of the offspring? a) all of the offspring would have two recessive alleles and white flowers. b) all of the offspring would have two dominant alleles and purple flowers. c) all of the offspring would have one recessive allele, one dominant allele, and white flowers. d) all of the offspring would have one recessive allele, one dominant allele, and purple flowers