Interference is the superposition of two or more waves
Indicate whether the statement is true or false
TRUE
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All elliptical galaxies are more massive than the largest spiral galaxies
a. True b. False Indicate whether the statement is true or false
All pulsars are neutron stars, but not all neutron stars are pulsars
Indicate whether the statement is true or false
What type of geological activity is seen on Neptune's moon Triton?
a. Plate tectonics and earthquakes are a common occurrence on Triton. b. Volcanoes of molten lava, similar to Earth, have been seen there. c. Geysers of liquid nitrogen are seen erupting from its surface. d. Geysers of liquid water are seen erupting from its surface.
When is friction a potential problem for applying conservation of momentum to a system?
A. When friction is an external interaction B. When friction is an internal interaction C. In both cases D. In neither case