What class of metals provides candidates with the lowest price per unit volume and a yield strength of over 1000 MPa?
(a) Aluminum alloys
(b) Steels
(c) Titanium alloys
(d) Cast iron
(b) Steels
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Displacement: Suppose that an object travels from one point in space to another. Make a comparison between the magnitude of the displacement and the distance traveled by this object.
A. The displacement is either greater than or equal to the distance traveled. B. The displacement is always equal to the distance traveled. C. The displacement is either less than or equal to the distance traveled. D. The displacement can be either greater than, smaller than, or equal to the distance traveled.
The galactic center lies in the direction of which constellation?
A) Orion B) the Big Dipper C) Leo D) Sagittarius E) Taurus
In GUTs, the electromagnetic force and weak nuclear force were the first to separate; then came gravity
Indicate whether the statement is true or false
As the pH increases, the hydroxide ion concentration
A) goes down. B) gets larger. C) starts to affect the H+ concentration. D) starts to decrease because it is reacting with the excess hydronium ions. E) stays constant.