Rank the following kinds of waves according to their frequencies from highest to lowest:
(a) gamma rays
(b) microwaves
(c) radio waves
(d) visible light
(e) x-rays
1.c > b > d > e > a
2.b > c > e > b > a
3.a > e > d > b > c
4.e = a = c = d = b
3
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The base of a metal block, which is fixed in place, measures 90 cm by 90 cm, and the height of the block is 60 cm
A force, applied to the upper face and parallel to it, produces a shear strain of 0.0060. The shear modulus of this metal is 3.0 × 1010 Pa. The displacement of the upper face, in the direction of the applied force is closest to A) 5.4 mm. B) 4.8 mm. C) 3.6 mm. D) 3.0 mm. E) 4.2 mm.
A rod is 2.40 m long and has a diameter of 2.50 mm. A force of 2000 N is applied to the end to stretch the rod by 1.40 mm. What is the tensile modulus for this rod?
a. 
b. 
c. 
d. 
e. 
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/ . The child is standing 4.65 m from the center of the merry-go-round
What is the magnitude of the acceleration of the child? A) 8.05 m/s2 B) 7.27 m/s2 C) 2.58 m/s2 D) 3.46 m/s2 E) 4.10 m/s2
When a source of sound approaches, measurements will show an increase in the sound's
1) speed, 2) frequency, 3) wavelength, 4) all of these, 5) none of these, and when a source of sound recedes, measurements will show an increase in the sound's 6) speed. 7) frequency. 8) wavelength. 9) all of these. 10) none of these.