"The human body. It is an organism. It is made up of cells, tissues, organs, and organ systems," said Ms. Garcia to her students." can see tissues, my skin!" said Allie. "But how do I know I am made of cells too?' The students carried out an experiment to prove
to Allie that they were indeed made of cells. Here is a photo of their lab activity. What did they do?

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Determine the maximum r-value of the polar equation r =3+3 cos 0