A force of 15.0 N is applied to a wire with a diameter of 2.00 mm. If the wire changed length by 1.20 mm, then the stress in the wire is
a. 
b. 
c. 
d. 
e. 
a.
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In the field, you find an unidentified mineral that is clear, exhibits conchoidal fracture, and can scratch glass. This mineral is most likely:
-gypsum. -calcite. -quartz. -hornblende. -muscovite.
A block is on a frictionless table, on earth. The block accelerates at 3.0 m/ when a horizontal force is exerted on it
The block and table are set up on the Moon, where the acceleration of objects due to the gravitational attraction is 1.62 m/ . The weight of the block on the Moon is closest to A) 11 N. B) 9.5 N. C) 8.1 N. D) 6.8 N. E) 5.5 N.
Ozone depletion in the upper atmosphere is likely to cause
A) heating of the atmosphere. B) melting of the polar ice caps. C) Both of the above. D) skin cancer. E) acid rain.
A crane lifts a steel submarine of density 7800 kg/m3 and mass 20,000 kg
What is the tension force that the lifting cable exerts on the submarine (a) when the submarine is submerged in water of density 1000 kg/m3, and (b) when it is entirely out of the water? A) (a) 2.0 × 105 N (b) 1.7 × 105 N B) (a) 1.7 × 105 N (b) 2.0 × 105 N C) (a) 2.6 × 103 N (b) 2.0 × 105 N D) (a) 2.0 × 105 N (b) 2.6 × 103 N