Adams and Leverrier predicted the position of Neptune, based on its perturbations of:
A) Jupiter.
B) the Sun.
C) Saturn's rings.
D) Uranus.
E) Triton.
D
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A room is heated with electric resistance wires embedded in the 2.2 m high ceiling. Estimate the heat transfer per unit of floor area when the ceiling is at 80ºC and the floor is 10ºC. Neglect any radiation and heat transfer between the walls of the room.
What will be an ideal response?
A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas?
A) 124 K B) 811 K C) 610 K D) 775 K E) 820 K
A displacement vector is 34.0 m in length and is directed 60.0° east of north. Selecting from the choices in the table below, what are the components of this vector?
Northward Eastward choice component component 1 29.4 m 17.0 m 2 18.2 m 28.1 m 3 22.4 m 11.5 m 4 17.0 m 29.4 m 5 25.2 m 18.2 m A) choice 1 B) choice 2 C) choice 3 D) choice 4 E) choice 5
As a body falls through air starting from rest, its acceleration
a. is zero b. stays constant c. continuously decreases d. continuously increases e. gets smaller and smaller, eventually approaching zero