What is the maximum length of steel cable that can hang vertically supported from one end of the cable?
The Young's modulus of this steel is 2.10 × 1011 N/m2, the tensile strength of this steel is 7.4 × 108 N/m2, and the density of this steel is 7.6 × 103 kg/m2.
A)
9.93 km
B)
4.22 km
C)
456 m
D)
1.75 km
E)
24.8 km
A
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Fill in the blank(s) with the appropriate word(s).
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a. ultraviolet light b. X rays c. infrared waves d. gamma rays
The type of radio wave that produces the least static in a radio receiver is
A) AM. B) FM. C) neither of these
The number of molecules in a container is tripled and the Kelvin temperature doubled. The volume remains unchanged. The new pressure will be how many times greater than the original pressure?