Biology

Biology, 30.07.2019 19:30, Korey5672

Which is a homologous structure to the human forearm?

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Physics, 29.06.2019 13:40, mem8163

In the human arm, the forearm and hand pivot about the elbow joint. consider a simplified model in which the biceps muscle is attached to the forearm 3.80 cm from the elbow joint. assume that the person's hand and forearm together weigh 15.0 n and that their center of gravity is 15.0 cm from the elbow (not quite halfway to the hand). the forearm is held horizontally at a right angle to the upper arm, with the biceps muscle exerting its force perpendicular to the forearm. a) the force exerted by the biceps when the hand is empty= 59.2 n b) when the person holds a 80.0-n weight in his hand, with the forearm still horizontal. the center of gravity of this weight is 33.0 cm from the elbow the force of the bicep= 754 n c) under the conditions of part b, find the magnitude of the force that the elbow joint exerts on the forearm. d)while holding the 80.0-n weight, the person raises his forearm until it is at an angle of 53.0 ? above the horizontal. if the biceps muscle continues to exert its force perpendicular to the forearm, what is this force when the forearm is in this

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Biology, 01.07.2019 06:50, needhhelp

The human tailbone is an example of a(n) homologous structure analogous structure vestigial structure embryonic structure

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Chemistry, 31.07.2019 07:40, jourdanpress

Which statements describe homologous structures? check all that apply. an example of a homologous structure is the wing of a bird and an insect. an example of a homologous structure is the forelimb of a whale, a human, and a dog. homologous structures have the same function but a different structure. homologous structures have the same structure, but may have a different function. homologous structures indicate a common ancestor. homologous structures do not indicate a common ancestor.

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Mathematics, 24.09.2019 06:00, missymiss4273

In the human arm, the forearm and hand pivot about the elbow joint. consider a simplified model in which the biceps muscle is attached to the forearm 3.80 cm from the elbow joint. assume that the person's hand and forearm together weigh 15.0 n and that their center of gravity is 15.0 cm from the elbow (not quite halfway to the hand). the forearm is held horizontally at a right angle to the upper arm, with the biceps muscle exerting its force perpendicular to the forearm.

Answers: 1

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