A(n) ________ is a very energetic collapse forming a black hole and jets of gamma rays
Fill in the blank(s) with correct word
hypernova
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Photocopiers make use of the photoelectric effect
Indicate whether the statement is true or false
Which one of the following is TRUE?
A) Most elliptical galaxies contain only young stars. B) Most galaxies appear to be approaching the Milky Way Galaxy. C) Irregular galaxies rarely have star formation taking place in them. D) Smaller galaxies called dwarf galaxies tend to be found around larger galaxies like the Milky Way. E) Galaxy collisions destroy most of the stars in the galaxies involved.
Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds.What is the impulse provided by the force?
a. 150 N-s b. 50 N-s c. 75 N-s d. undetermined—not enough information given e. none of the above
Addition by Components: Vector 
has magnitude 2 units and is directed to the north. Vector 
has magnitude 5 units and is directed to the south. Calculate the magnitude and direction of 
- 
.
A. 7 units, north B. 7 units, south C. 3 units, north D. 3 units, south