When an earthquake occurs, no direct _______________ pass through the core to register on seismographs on the opposite side of Earth
Fill in the blank(s) with correct word
S waves
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A mass src="https://sciemce.com/media/4/3df1b382cb4bdc8834.png" class="w-image" />?
is connected by a light string that passes over a pulley of mass M to a mass 
sliding on a frictionless horizontal surface as shown in the figure. There is no slippage between the string and the pulley. The pulley has a radius of 25.0 cm and a moment of inertia of 1?2 
If 
is 4.00 kg, 
is 4.00 kg, and M is 4.00 kg, then what is the tension in the string attached to
A. 10.4 N
B. 12.6 N
C. 15.7 N
D. 17.6 N
E. 19.8 N
The radius of a super-Earth generally falls in the range:
A) above 5 Earth radii.
B) between 2 and 5 Earth radii.
C) between 1.25 and 2 Earth radii.
D) between 0.75 and 1.25 Earth radii.
E) below 0.75 Earth radii.
A total solar eclipse occurs for people in the Sun's
A) umbra. B) penumbra. C) none of these
The best way to increase the calculated fatigue-crack propagation cycles to failure of a part is
(a) To select a material with a high KIc (b) To ensure that the part has a very small initial crack length with nondestructive testing equipment. (c) To polish the surface of the part (d) To case-harden the part