Most comets spend the majority of their time beyond the orbit of ________, yet many of them have perihelions very close to the Sun
Fill in the blank(s) with correct word
Pluto
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If we detected an Earth-like planet in the habitable zone around another star, describe how we might learn whether it contained life
What will be an ideal response?
The size of the electric current in a electrical conductor is a function of which of the following?
a. conductor cross sectional area c. density of charge carriers b. velocity of charge carriers d. All of these choices are valid.
In a condenser of a refrigeration unit, saturated vapor R-134a flows at 0.5 m/s into a 0.5 cm diameter horizontal tube. The tube inside surface temperature is 30ºC and the R- 134a is at 80ºC. Estimate the convective heat transfer coefficient and the expected tube length required for complete condensation of the R-134a. Use hnfg of 106.3 kJ/kg, ?f of 927.6 kg/m3, ?g of 153.8 kg/m3, and cp, ?, and ? at 400C.
What will be an ideal response?
Opposing shearing forces of 3000 N are applied to the 3.00-cm × 4.00-cm faces of a metal block measuring 3.00 cm × 4.00 cm × 5.00 cm. By what distance does the block become slanted? The shear modulus for this metal is 8.10 × 1010 N/m2
A) 1.54 × 10-6 m B) 5.56 × 10-7 m C) 3.08 × 10-6 m D) 9.88 × 10-7 m E) 6.98 × 10-6 m