A wave has an amplitude 20.0 cm, a wavelength 3.00 m, and the wave travels 60.0 m in 12.0 s. What is the frequency of the wave?
A)
8.33 Hz
B)
250 Hz
C)
0.500 Hz
D)
1.67 Hz
E)
150 Hz
D
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Bainite is formed by the following procedure with a eutectoid composition carbon steel starting at 800°C (1472°F):
(a) Quench to 500°C (932°F), then hold for 100 seconds, then cool to room temperature. (b) Quench to 600°C (1112°F), then hold for 100 seconds, then cool to room temperature. (c) Quench to 700°C (1292°F), then hold for 100 seconds, then cool to room temperature. (d) Quench to room temperature in 10 seconds.
A 320-g air track cart traveling at 1.25 m/s suddenly collides elastically with a stationary 270-g cart. What is the speed of the 270-g cart just after the collision?
A) 0.678 m/s B) 0.106 m/s C) 1.36 m/s D) 1.14 m/s E) 2.72 m/s
The sensitive dependence upon initial conditions of the evolution of some physical systems is a feature of __________
Fill in the blank(s) with correct word
A 1500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 14 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)
a. 0.18 c. 0.28 b. 0.30 d. 0.38