Speed is a(n) ______________ quantity
Fill in the blank(s) with correct word
scalar
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If the mixing of 10 atomic %copper into a silver crystal occurs at T=1000 K (727°C), determine the change in the Gibbs free energy on a per-mole basis if the enthalpy of solution for copper into silver is 0.25 eV/atom. (b) Based upon your result, should it be possible to mix 10 atomic %copper into silver? Explain your answer, and discuss this result in comparison to Example Problem 4.8.
What will be an ideal response?
If a particular 8 inch thick material has a thermal conductivity of 10 Btu/ hr?ft?ºF, what is its R-value?
What will be an ideal response?
In 1974, a radio message was sent out from the Arecibo observatory in Puerto Rico. How far has it gotten, approximately?
A) just beyond our Solar System B) not even to the nearest stars C) just a miniscule fraction of the distance across the Milky Way D) almost to the center of the Milky Way E) beyond the Milky Way, to the Andromeda galaxy
In Jules Verne's From the Earth to the Moon, scientists are launched from the surface of Earth by a cannon
With what speed would their capsule have to leave the cannon if the speed of the capsule is required to be zero m/s at the point between Earth and the Moon where their gravitational pulls on the capsule are equal? The mass of Earth is 5.97 × 1024 kg, the mass of the Moon is 7.35 × 1022 kg, the distance between Earth and the Moon is 3.84 × 108 m, the radius of Earth is 6.37 × 106 m, and G = 6.67 x 10-11 N•m2/kg2. A) 11,100 m/s B) 11,200 m/s C) 10,400 m/s D) 15,700 m/s E) 15,800 m/s