What is not predictable in the double-slit experiment with electrons?
A) The individual impact point of each electron on the screen.
B) The overall pattern of hits on the screen, as formed by a large number of electrons.
C) Both of the above.
D) None of the above.
A
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Total Internal Reflection: A tank holds a layer of oil, of thickness To = 1.65 m, that floats on a layer of syrup of thickness Ts = 0.830 m, as shown in the figure. Both liquids are clear and do not mix together. A light ray, originating at the bottom of the tank at point P, crosses the oil-syrup interface at a point 0.900 m from the axis. The ray continues and arrives at the oil-air interface, 2.00 m to the right of P and at the critical angle. What is the index of refraction of the syrup?
A. 1.36 B. 1.25 C. 1.94 D. 1.75 E. 1.54
What are coronal holes?
A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots B) areas of the corona where magnetic field lines project into space, allowing charged particles to escape the Sun, becoming part of the solar wind C) holes in the corona of the Sun that allow us to see the photosphere D) tunnels in the outer layers of the Sun through which photons can escape more quickly than through the radiation zone
A block is on a frictionless horizontal table, on earth. This block accelerates at 3.6 m/ when a horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/
A horizontal force of 45 N is applied to the block when it is on the moon. What acceleration does this force impart to the block? A) 1.8 m/ B) 1.6 m/ C) 2.0 m/ D) 2.2 m/ E) 2.3 m/
The unit for rate of energy transformation, the watt, in an electric circuit is equivalent to which of the following?
a. A×W c. V/W b. V/s d. V×A