A very delicate sample is placed 0.150 cm from the objective lens of a microscope. The focal length of the objective is 0.140 cm, and that of the eyepiece is 1.0 cm. The near-point distance of the person using the microscope is 25.0 cm
The magnitude of the final magnification of the microscope is closes to A) 375.
B) 300.
C) 250.
D) 125.
E) 100.
A
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Newton's Second Law in 1 Dimension: A catcher stops a 0.15-kg ball traveling at 40 m/s in a distance of 20 cm. What is the magnitude of the average force that the ball exerts against his glove?
Fill in the blank(s) with the appropriate word(s).
Compound Microscope: The focal lengths of the objective lens and the eyepiece of a microscope are 0.50 cm and 2.0 cm, respectively, and their separation is 6.0 cm when adjusted for minimum eyestrain for a person with a near point of 25.0 cm. If the microscope is focused on a small object, the magnitude of its final overall magnification is closest to
A. 50. B. 100. C. 150. D. 200. E. 250.
Venus has a high reflectivity because of its
A) light-colored rocks. B) snow. C) clouds. D) dust storms. E) volcanic ash.
Newton's law of gravitation applies to all ______________
Fill in the blank(s) with the appropriate word(s)