The coefficient of static friction between the tires of a car and the street is ?s = 0.70 . 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. 30°
b. 40°
c. 35°
d. 45°
e. 32°


c

Physics & Space Science

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What power lens is needed to correct for farsightedness where the uncorrected near point is 75 cm?

A) -2.67 D B) +2.67 D C) +5.33 D D) -5.33 D E) +1.00 D

Physics & Space Science

A loop of wire (resistance = 2.0 m?) is positioned as shown with respect to a long wire which carries a current. If d = 1.0 cm, D = 6.0 cm, and L = 1.5 m, what current is induced in the loop at an instant when the current in the wire is increasing at a rate of 100 A/s?



a.
34 mA

b.
30 mA

c.
27 mA

d.
38 mA

e.
0.50 mA

Physics & Space Science

The figure shows the graph of versus time for an object moving along the x-axis. Solve graphically for the distance traveled from t = 9.0 s to t = 13.0 s.



A. 60 m
B. 84 m
C. 76 m
D. 80 m

Physics & Space Science

An ideal incompressible fluid flows at 0.252 m/s through a 44-mm diameter cylindrical pipe. The pipe widens to a square cross sectional area that is 5.5 cm on a side. Assume steady flow throughout the system

(a) What is the speed of the fluid through the square section of pipe? (b) What is the flow rate in liters per minute?

Physics & Space Science