A window for viewing fish in the local aquarium is square and measures 0.8 m × 0.8 m. Its center is 12. m below the surface. What is the total force on the window?
What will be an ideal response?
75300. N
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How does a white dwarf compare to a main-sequence star of the same mass?
A) The white dwarf has higher surface temperature and higher luminosity. B) The white dwarf has higher luminosity but lower surface temperature. C) The white dwarf has lower surface temperature and lower luminosity. D) The white dwarf has lower luminosity but higher surface temperature. E) The white dwarf and main-sequence star have the same mass and therefore have the same surface temperature and luminosity.
The part of the electromagnetic spectrum with the shortest wavelengths is called ________
Fill in the blank(s) with correct word
After a switch is thrown to remove the battery from a DC LR circuit, but the circuit is still left complete, the time constant represents
A. the time rate of change of the current in the circuit. B. the time rate of change of the induced emf in the circuit. C. the magnitude of the ratio of the current to the time rate of change of the current. D. all of the above. E. only (a) and (b) above.
A vertically oriented rocket that is able to sustain a continuous upward velocity of 8 km/s will
A) eventually escape from Earth. B) be unable to escape Earth. C) maintain a fixed orbit around Earth.