The explosion of a Type II supernova leaves behind
a. just a black hole.
b. a neutron star or a black hole.
c. just a neutron star.
d. none of the above.
b
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Faraday's Law: A flat coil having 40 turns, each one of cross-sectional area 12.0 cm2, is oriented with its plane perpendicular to a uniform magnetic field. The field varies steadily from 0.00 T to 1.20 T in 20.0 ms. What emf is induced in the coil during this time?
Fill in the blank(s) with the appropriate word(s).
Explain how the Doppler Effect has been used to detect invisible planets orbiting other Sun-like stars
What will be an ideal response?
In the atom, which particles give the element its identity (atomic number)?
A) positrons B) electrons C) protons D) neutrons E) neutrinos
Astronauts in a space shuttle that orbits the Earth are in a state of "free fall" that makes them appear to be weightless. If an astronaut brings a helium balloon to a pressurized room of a space shuttle while it is in orbit, what would the helium balloon do?
1.It would float to the top of the cabin. 2.It would sink slowly to the bottom of the cabin. 3.It would remain wherever it is placed. 4.It would remain at whatever height it is placed, but it would move horizontally to one side of the cabin.