What is the weight percent carbon in 1020 steel?
(a) 2
(b) 0.2
(c) 0.1
(d) 1
(b) 0.2
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The electric field between oppositely-charged parallel plates is
A) uniform. B) stronger at the ends. C) composed of field lines curved in opposite directions. D) none of the above
The sound level at 1.0 m from a certain talking person talking is 60 dB. You are surrounded by five such people, all 1.0 m from you and all talking equally loud at the same time
The threshold of hearing is 1.0 × 10-12 W/m2. What sound level are you being exposed to? You can neglect any absorption, reflection, or interference of the sound. The threshold of hearing is 1.0 × 10-12 W/m2. A) 300 dB B) 60 dB C) 74 dB D) 67 dB E) 81 dB
Tensile train is
A) the ratio of the change in length to the original length. B) the stress per unit area. C) the same as force. D) the applied force per cross-sectional area. E) the ratio of stress to elastic modulus.
At the instant a 2.0-kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0-kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the two-particle system?
a. 3.8 m/s b. 3.4 m/s c. 5.0 m/s d. 4.4 m/s e. 4.6 m/s