What do we mean by the straightest possible path along Earth's surface between two points on Earth's surface?
A) a path that actually is a perfect straight line
B) a path that follows a circle of latitude
C) a path that follows a circle of longitude
D) a path that crosses the equator
E) the shortest path between the two points
E) the shortest path between the two points
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In what way could the Huygens probe be considered a first?
What will be an ideal response?
A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but a light of a known wavelength of 632.8 nm is deflected by 43.2° in the second order by this grating
Light of the wavelength to be measured is deflected by 34.9° in the second order. What is the wavelength of this light?
In an elastic collision between two bodies of mass m1 and m2, with m2 initially at rest, mass 1 moves off at angle ? relative to the direction of its initial velocity and mass 2 at angle ?. An exam paper shows the equations below: m1v1i 0 = m1v1f cos? + m2v2f sin? = m1v1f sin? + m2v2f cos? What error(s) has the student made?
a. In the first equation, m2v2f sin? should be m2v2f cos?. b. In the second equation, m2v2f cos? should be m2v2f sin?. c. In the second equation, the plus sign between the terms on the right should be a minus sign. d. All of the errors listed above. e. Only errors (a) and (b) above.
A neutral atom has an electron configuration of 1s22s22p63s23p2. What is its atomic number?
A) 5 B) 11 C) 14 D) 20 E) 26