Which of the following aluminum alloys is not recommended for welding?
(a) 3003
(b) 5052
(c) 6061
(d) 7075
(d) 7075
You might also like to view...
Which of the following is not true about potential energy?
a. Potential energy is stored energy. b. Potential energy is related to position. c. Potential energy is a scalar quantity. d. Potential energy has direction.
A high fountain of water is in the center of a circular pool of water. You walk the circumference of the pool and measure it to be 190 meters. You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain. It is 55°. How high is the fountain?
a. 25 m b. 53 m c. 86 m d. 43 m e. 48 m
Stellar paralax proves that Earth is
a. rotating. b. revolving. c. precessing. d. an oblate spheroid.
A solid state pulsed laser has an energy of 400 mJ per pulse. If its wavelength is 1.06 × 10^?6 m, how many photons are in each pulse?
a. 2 × 10^25 b. 2 × 10^21 c. 3 × 10^18 d. 6 × 10^38 e. 2 × 10^18