Although it has no liquid water, Mercury has a tidal bulge
Indicate whether the statement is true or false
TRUE
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In metals, at temperatures below half of the melting temperature, plastic strain is due to _________motion.
Fill in the blank(s) with the appropriate word(s).
Neither heat nor work are state functions
Indicate whether the statement is true or false
A machine gear consists of 0.40 kg of iron and 0.16 kg of copper. How much total heat is generated in the part if its temperature increases by 35°C? (Specific heats of iron and copper are 450 and 390 J/kg • °C, respectively.)
a. 910 J c. 4000 J b. 8500 J d. 5300 J
According to Kepler's Second Law of planetary motion, a planet moves fastest in its orbit when it is
A) undergoing retrograde motion B) in between perihelion and aphelion C) at perihelion D) at aphelion