Select the correct statement about the evolution of animals.
a) approximately half the p...
Select the correct statement about the evolution of animals.
a) approximately half the phyla of living organisms are found in cambrian sediments.
b) the oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.
c) no animal fossils are found in strata formed before the cambrian explosion.
Answers: 3
Physics, 22.06.2019 07:30
Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud
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Physics, 22.06.2019 18:10
A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.
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Physics, 22.06.2019 19:30
What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical
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Physics, 22.06.2019 23:00
Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.
Answers: 2
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