Although neutrino emission is used to detect supernovae, they do not play a role in the supernova explosion itself

a. True
b. False
Indicate whether the statement is true or false


False

Physics & Space Science

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Two astronauts, with masses 60. and 80. kg, are initially at rest in outer space. They push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12. m?

A) 12. m B) 9.0 m C) 16. m D) 21. m E) 7.0 m

Physics & Space Science

A vertically polarized beam of light of intensity 100 W/m2 passes through a polarizer with its transmission axis at 40.0° to the vertical. What is the transmitted intensity of this beam of light?

A) 100 W/m2 B) 0 W/m2 C) 25.0 W/m2 D) 44.4 W/m2 E) 58.7 W/m2

Physics & Space Science

You want to have an electron in an energy level where its speed is no more than 66 m/s

What is the length of the smallest box (an infinite well) in which you can do this? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg) A) 5.5 µm B) 11 µm C) 2.8 µm D) 1.4 µm

Physics & Space Science

A force on an object is given by F(x) = ( -4.00 N/m)x + ( 2.00 N/m3)x3. What is the change in potential energy in moving from x = 1.00 m to x = 2.00 m?

A) 10.0 J B) -1.50 J C) -10.0 J D) +1.50 J E) 12.0 J

Physics & Space Science