All of the following may be represented by vectors except:

a. velocity
b. speed
c. acceleration
d. displacement.


Ans: b. speed

Physics & Space Science

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Kirchhoff was the first to describe qualitatively the types of spectra we observe from luminous objects. Describe the three types and their sources

What will be an ideal response?

Physics & Space Science

In the gas laws, the ______________ temperature scale must be used

Fill in the blank(s) with correct word

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The meter is currently defined as

A) the distance between two etched lines in a platinum-iridium bar kept in S vres, France. B) the distance between two etched lines in a platinum-iridium bar kept in Washington, D.C. C) one ten-millionth of the distance between the North pole and the equator. D) the distance traveled by light in 1/299,792,458 of a second. E) 1,553,164.1 wavelengths of red cadmium light in dry air at 25°C.

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Each of two long straight parallel wires separated by a distance of 16 cm carries a current of 20 A in the same direction. What is the magnitude of the resulting magnetic field at a point that is 10 cm from each wire?

A. 57 ?T B. 80 ?T C. 64 ?T D. 48 ?T E. 40 ?T

Physics & Space Science