The coefficient of static friction between the tires of a car and the street is µs = 0.58 . Of the following, what is the steepest inclination angle of a street on which a car can be parked (with wheels locked) without slipping?
a. 22.5°
c. 38°
b. 30°
d. 45°
B
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In a double-slit experiment, the distance between the slits is 0.2 mm and the distance to the screen is 150 cm. What is the phase difference (in degrees) between the waves from the two slits arriving at a point P when the angular distance of P is 10° relative to the central peak, and the wavelength is 500 nm? (Convert your result so the angle is between 0 and 360°.)
A. 145° B. 155° C. 165° D. 135° E. 95°
The density of air at room temperature is about 1.2 g/cm3. This is the same as
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