If three identical bulbs are connected in series across a 12V battery, the voltage across each bulb will be

a. 12V
b. 4V
c. different
d. none of the above


B

Physics & Space Science

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A strobe photograph shows equally spaced images of a car moving along a straight road. If the time intervals between images is constant, which of the following cannot be positive?

a. the speed of the car c. the acceleration of the car b. the average velocity of the car d. the direction of motion of the car

Physics & Space Science

A pair of parallel conducting plates have potentials of -17 V and 55 V, respectively. An electron is ejected from the plate at potential -17 V and travels to the plate at 55 V. What is the speed of the electron as it strikes the 55 V plate, assuming it left the -17 V plate from rest? The mass of the electron is 9.11 x kg.

a.
b.
c.
d.

Physics & Space Science

Olbers's paradox is based on the assumption that the Universe began at some time in the past

Indicate whether the statement is true or false

Physics & Space Science

The Zeeman effect, in which energy levels of electrons are shifted and produce a corresponding split in spectral lines observed, is used to measure ________ at the Sun's surface.

A. the velocity and oscillations of gas B. gravitational field strength C. magnetic field strength D. the intensity of gamma rays

Physics & Space Science