Homework Clinic
Science Clinic => Physics => Topic started by: jlmhmf on Jul 29, 2018
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The curved section of a horizontal highway is a circular unbanked arc of radius 740 m. If the coefficient of static friction between this roadway and typical tires is 0.40,
what would be the maximum safe driving speed for this horizontal curved section of highway?
A) 54 m/s
B) 52 m/s
C) 50 m/s
D) 48 m/s
E) 46 m/s
Question 2
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.
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Answer to Question 1
A
Answer to Question 2
A