A light bulb is connected to a battery as shown in Figure A below. When a second bulb is connected as shown in Figure B, what happens to the brightness of the original bulb?

2,4,5

Physics & Space Science

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Which of the following quantities are units of momentum? (There could be more than one correct choice.)

A) N ? m B) kg ? s/m C) kg ? m/s D) N ? s E) kg ? m2/s2

Physics & Space Science

Multiple-Object Accelerating Systems: Three blocks, light connecting ropes, and a light frictionless pulley comprise a system, as shown in the figure. An external force of magnitude P is applied downward on block A, causing block A to accelerate downward at a constant 2.5 m/s2. The tension in the rope connecting block B and block C is equal to 60 N.(a) What is the magnitude of the force P?(b) What is the mass of block C?

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

What would be the consequence(s) of more frequent collisions between planets and asteroids?

A) Earth and other planets would have more large craters. B) We would observe more meteor showers. C) We would find more Martian meteorites on Earth. D) A and B E) A and C

Physics & Space Science

Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, respectively. What is the electric potential energy of this system of charges?

A) +1.4 J B) -1.4 J C) -32 J D) 4.0 J E) -4.0 J

Physics & Space Science