Suppose a 0.74-kg mass on a spring that has been compressed 0.100 m has elastic potential energy of 1.20 J. What is the spring constant?
a. 178 N/m
b. 320 N/m
c. 240 N/m
d. 24.0 N/m
e. 74.0 N/m
c
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In a design using the aluminum alloy 7075-T6, would it be safe to assume that a part could withstand an infinite number of stress applications that are only 50 % of the yield stress? _________
Fill in the blank(s) with the appropriate word(s).
The size of a neutron star is
a. about the same as that of our Solar System. b. about the same as that of the Sun. c. about the same as Earth. d. smaller than any of these.
Spherical Mirrors: An object is 5.7 cm from a spherical concave mirror. If the image is 4.7 cm tall and 10 cm from the mirror, how tall is the object?
A. 12 cm B. 11 cm C. 8.2 cm D. 2.7 cm
Rainbows are caused by sunlight being
A) dispersed. B) dispersed, refracted, & reflected. C) refracted. D) reflected. E) refracted & reflected but not dispersed.