The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force
The wave with the largest wavelength is wave
a.
I.
b.
II.
c.
III.
d.
IV.
e.
all of the above
c
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__________is microscopic solid grains in the interstellar medium
A) Main-sequence dust B) Interstellar dust C) Interstellar mud D) Main-sequence mud
A cylindrical tank is assembled by welding steel sections in a heli-cal pattern with angle ? 5 50°. Tank diameter is 1.6 m, thickness is 20 mm, and internal pressure is 2.75 MPa. Modulus E 5 210 GPa and Poisson’s ratio ? 5 0.28. The normal stress acting perpendicular to the weld is approximately:
(A) 39 MPa
(B) 48 MPa
(C) 78 MPa
(D) 84 MPa
Which of the following places is not generally considered a potential home for life in our solar system?
A) Mars B) Jupiter's atmosphere C) Europa D) Titan
A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child at the highest point on this trajectory?
a. 49 N b. 0.29 kN c. 0.34 kN d. 0.25 kN e. 0.76 kN