55. blood is accelerated from rest to 30.0 cm/s in a distance of 1.80 cm by the left ventricle of the heart. (a) make a sketch of the situation. (b) list the knowns in this problem. (c) how long does the acceleration take? to solve this part, first identify the unknown, then discuss how you chose the appropriate equation to solve for it. after choosing the equation, show your steps in solving for the unknown, checking your units. (d) is the answer reasonable when compared with the time for a heartbeat?

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

How many types of rock can form from the rock cycle

Explain how scientists use geologic time to determine the age of landforms.