A car enters a level, unbanked semi-circular hairpin turn of 100 m radius at a speed of 28 m/s. The coefficient of friction between the tires and the road is ? = 0.800 . If the car maintains a constant speed of 28 m/s, it will
a. attempt to dig into the road surface.
b. tend to veer toward the center of the semicircle.
c. arrive safely at the end of the semicircle.
d. tend to veer toward the outside of the circle.
e. veer toward the center for the first quarter-circle, then veer toward the outside for the second quarter-circle.
c
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Fill in the blank(s) with the appropriate word(s).
Like charges _________, unlike charges __________
Fill in the blank(s) with correct word
Suppose a car has a 100 000-mile 10-year warranty on its wheels and axles. How may turns will the wheels of 0.70-m diameter make if both the mileage and time warranties run out simultaneously and what will be the average angular velocities of the wheel? Assume that a mile = 1.6 × 10^3 m and that a year is 3.16 × 10^7 s
a. 7.3E+7, 14 rad/s b. 2.3E+8, 1.4 rad/s c. 3.5E+8, 1.4 rad/s d. 7.3E+7, 1.4 rad/s e. 2.3E+8, 14 rad/s
Monochromatic light is incident on a diffraction grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°. What is the wavelength of the incident light?
A) 202 nm B) 403 nm C) 605 nm D) 806 nm