Process of Science: Gravity only affects very massive objects and we can therefore only test theories about it when looking at the orbits of planets
Indicate whether the statement is true or false
FALSE
4.3 Short Answer Questions
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In the lighthouse model
A) the star literally turns on and off like a lighthouse beacon. B) all pulsars must have their poles pointed directly toward us. C) if the beam sweeps across us, we will detect a pulse of radiation. D) the period of pulsation must speed up as the neutron star continues collapsing. E) the period of pulsation slows down due to the drag of the remnant on its field.
What is the cause of a magnetic field about a permanent magnet and about a current-carrying wire?
What will be an ideal response?
The "Cambrian explosion" refers to the
A) great many meteorite bombardments that occurred during that time. B) great diversity of life that blossomed during that time. C) evolution and great diversity of blastoids during that time period. D) numerous volcanic eruptions that took place during that time.
Compared with the amount of current in the filament of a lamp, the amount of current in the connecting wires is
A) definitely less. B) often less. C) actually more. D) the same. E) incredibly, all of the above