The ultimate fate of our Sun is to
A) become a white dwarf that will slowly cool with time.
B) explode in a supernova.
C) become a rapidly spinning neutron star.
D) become a black hole.
A) become a white dwarf that will slowly cool with time.
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An isolated black hole in empty intergalactic space would be difficult to detect because
a. there would be no stars behind it whose light it could bend or lens gravitationally b. it could not emit light from inside its event horizon c. no companion stars would be affected by its gravitational field d. no matter would be falling into it to create an x-ray emitting accretion disk e. All of the above
What would you have to change about the Earth to stop our planet from having significantly different seasons?
What will be an ideal response?
A car travels around a 35m radius unbanked curve. The static friction coefficient between the tires and the road is 0.45. What is the maximum speed at which the car can travel without slipping around this corner?
A. 2.8 m/s B. 27.6 m/s C. 12.4 m/s D. 7.5 m/s
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. When you increase the plate separation, what happens to the value of C?
1.It increases. 2.It decreases. 3.It stays the same.