Copernicus's model of the solar system gave much better predictions than the model of Ptolemy
Indicate whether the statement is true or false
FALSE
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Like dark matter, dark energy will also retard the expansion of the universe
Indicate whether the statement is true or false
When you ride your scooter you have momentum. When you ride twice as fast you have
A) almost twice the momentum. B) twice the momentum. C) four times the momentum. D) none of the above
Object A in the shape of a disk of radius r is placed a distance R away from an intense light source. Object B, made from the same material as object A, is in the shape of a disk of radius 2r and placed a distance 2R away from the same light source
We observe which of the following? A) Both objects experience the same amount of radiation pressure but receive different amounts of linear momentum. B) The objects experience different amounts of radiation pressure and receive different amounts of linear momentum. C) Both objects experience the same amount of radiation pressure and the same amount of linear momentum. D) The objects experience different amounts of radiation pressure but receive the same amount of linear momentum.
The sum of the kinetic and potential energy is equal to the _____________energy.
Fill in the blank(s) with the appropriate word(s).