Sea lilies are more scientifically called ______________
Fill in the blank(s) with correct word
crinoids
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__________are long spiral pattern of bright stars, star clusters, gas, and dust
A) Spiral stars B) Spiral tracers C) Spiral clouds D) Spiral arms
The position of a ball rolling in a straight line is given by x=2.0-3.6t +1.1 t2, where x is in meters and t in seconds.
(a) Determine the position of the ball at t=1.0s, 2.0s and 3.0s. (b) What is the average velocity over the interval t=1.0s to t=3.0s? (c) What is its instantaneous velocity at t=2.0s and at t=3.0s?
The focal lengths of the objective and the eyepiece of a microscope are 0.5 cm and 2.0 cm, respectively, and their separation adjusted for minimum eyestrain is 6.0 cm. The near-point distance of the person using the microscope is 25.0 cm
If the microscope is focused on a small object, what is its final magnification? A) -44 B) -66 C) -77 D) -88 E) -100
The transition from single to multicellular life took over two billion years
Indicate whether the statement is true or false