When you look at a single slit diffraction pattern produced on a screen by light of a single wavelength, you see a bright central maximum and a number of maxima on either side, their intensity decreasing with distance from the central maximum. If the wavelength of the light is increased,
a. the pattern shrinks in size. (central maximum less wide; other maxima in closer to it)
b. the pattern increases in size. (central maximum wider; other maxima farther from it)
c. it does not affect the size of the pattern.
d. the width of the central maximum increases, but the other maxima do not change in position or width.
e. the width of the central maximum decreases, but the other maxima do not change in position or width.
B
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1.No; from your perspective you’re at rest with respect to the cabin, so you will measure yourself as having your normal length, and will require a normal-sized cabin. 2.Yes, if your bed is oriented along the direction of motion, because length contraction only takes place along this direction.
A wheel (radius = 12 cm) is mounted on a frictionless, horizontal axle that is perpendicular to the wheel and passes through the center of mass of the wheel. A light cord wrapped around the wheel supports a 0.40-kg object. If released from rest with the string taut, the object is observed to fall with a downward acceleration of 3.0 m/s2 . What is the moment of inertia (of the wheel) about the
given axle? a. 0.023 kg×m2 b. 0.013 kg×m2 c. 0.020 kg×m2 d. 0.016 kg×m2 e. 0.035 kg×m2
How does terrestrial radiation warm Earth's surface?
What will be an ideal response?
When a body moves in a straight line with increasing speed, the net force on it must be increasing
Indicate whether the statement is true or false