Of all the Galilean satellites, the surface of Europa is the youngest in age
Indicate whether the statement is true or false
FALSE
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0.45 kg of a metal at 90.°C is added to 0.40 kg of water at 20.0°C
(a) If the final temperature of the mixture is 26.°C, what is the specific heat of the metal? (b) If the water container has a significant heat capacity, will this increase or decrease the metal specific heat determined in part "a"given the same data?
A planet's sidereal orbital period can be measured from repeated observations of its location in the sky (so long as Earth's own motion around the Sun is properly taken into account)
Indicate whether the statement is true or false
A flat horizontal plate of area 400 cm2 is dragged over a 0.20 cm thick layer of oil at a speed of 30.0 cm/s. The oil is resting on a fixed horizontal surface. It takes a force 1.20 N applied to the plate to sustain this speed
What is the viscosity of the oil? A) 6.00 kg/m • s B) 20.0 kg/m • s C) 60.0 kg/m • s D) 0.200 kg/m • s E) 200 kg/m • s
Three engines operate between reservoirs separated in temperature by 300 K. The reservoir temperatures are as follows:
Engine A: Th 5 1 000 K, Tc 5 700 K Engine B: Th 5 800 K, Tc 5 500 K Engine C: Th 5 600 K, Tc 5 300 K Rank the engines in order of their theoretically possible efficiency, from highest to lowest.
1.A, B, C 2.B, C, A 3.C, B, A 4.C, A, B