Briefly describe how a nova event occurs
What will be an ideal response?
A white dwarf in a close binary system accretes mass from its companion star. This mass is mostly hydrogen from the companion's outer layers. When enough builds up on the white-dwarf surface, the hydrogen undergoes fusion, generating the nova.
You might also like to view...
A(n) ____ orbit is one where the orbiting object is always above the same location on Earth's surface
a. elliptical b. geosynchronous c. closed d. hyperbolic e. parabolic
Three resistors, 10 ?, 20 ?, and 30 ?, are wired in series and connected to a 120-V battery. How much current flows in the circuit?
Which of the following hypotheses for the origins of the Moon is generally accepted by astronomers?
A. The Moon is the result of a collision between Earth and a Mars-sized object in the early days of the solar system (the collision theory). B. The Moon formed somewhere else and was later captured by Earth (capture theory). C. The Moon formed alongside Earth (the twin theory). D. The Moon was originally a bulge on Earth that was flung off by the rapidly spinning Earth (fission theory).
A red car has a head-on collision with an approaching blue car with the same magnitude of momentum. A green car driving with the same momentum as the other cars collides with an enormously massive wall
Which of the three cars will experience the greatest impulse? A) red car B) blue car C) green car D) all the same