Need 60 !
the students want to test a newly designed disk that is made of the same material and has the same mass but that has a radius of 22 cm. based on the data collected by the students, what would be a reasonable prediction of the kinetic energy of this disk at 120 rpm?

0.22 j
0.90 j
0.17 j
0.80 j

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

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 does the fossil record provide evidence that the modern whale evolved from the anthracotheres? a) the modern whale looks like their ancestor the anthracotheres. b) the modern whale has all of the same structures as their ancestor. c) there is not enough evidence to suggest the the modern whale evolved from the anthracotheres. d) the anthracotheres has a structure that is still present in the modern whale, but is no longer of use to the modern whale.