The circuit below contains three 100-W light bulbs. The emf ? = 110 V. Which light bulb(s) is(are) brightest?





a.

A



b.

B



c.

C



d.

B and C



e.

All three are equally bright.


a

Physics & Space Science

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The highest-temperature aircraft gas-turbine blades are made from

(a) Tungsten (b) Single crystals of nickel-based alloys (c) Polycrystals of nickel-based alloys (d) Alumina

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A large water storage container is filled to a depth of 3.0 m. The volume above the water is filled with air. In order to pump the water from the container, the air pressure in the container is increased by 3.0 105 N/m2. What happens to the pressure in the water at a depth of 1.0 m when the air pressure is increased?

A.

Nothing, it is still at a depth of 1.0 m and the pressure in the water depends only on the depth.

B.
It increases by 1.0 105 N/m2, since it is at 1/3 the depth of the water.

C.
It increases by 2.0 105 N/m2, since it is at 2/3 the depth from the bottom of the container.

D.
It increases by 3.0 105 N/m2.

E.
It increases by 3.0 105 N/m2 + 9.8 103 N/m2 since it is 1.0 m deep in the water.

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The geocentric model of the Greeks consisted of a

A) flat Earth at the center of the universe surrounded by a dome-shaped sky B) flat Earth at the center of the universe surrounded by a celestial sphere C) spherical Earth at the center of the universe surrounded by a dome-shaped sky D) spherical Earth at the center of the universe surrounded by a celestial sphere

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A collection of small, icy bodies are found in the _______________ orbiting in the outer fringes of our Solar System

Fill in the blank(s) with correct word

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