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Astronomy | Astrophysics
Which of the following determines the frequency at which a star emits most of its radiation?
A) Its distance from us
B) Its temperature
C) It brightness
A) Its distance from us
B) Its temperature
C) It brightness
Astronomy | Astrophysics
How would the seasons change if the Earth had no axial tilt?
Astronomy | Astrophysics
Find the velocity with which Mercury moves around the sun.
Find the velocity of Saturn. Does it make sense that Mercury is named after a speedy
messenger of the gods, while Saturn is named after the father of Jupiter?
Find the velocity of Saturn. Does it make sense that Mercury is named after a speedy
messenger of the gods, while Saturn is named after the father of Jupiter?
Astronomy | Astrophysics
The speed of a satellite in orbit 265 km above the surface and
The period of the satellite
The period of the satellite
Astronomy | Astrophysics
Why the Earth is round?
Astronomy | Astrophysics
Why does time run slow near a massive body like a black hole?
Astronomy | Astrophysics
What is the kinetic energy of a 300g mass moving at 150,000 km/s?
Astronomy | Astrophysics
What is earth potential?
Astronomy | Astrophysics
Star A is a “red giant” with a temperature of 3000 Kelvin and a radius 100 times that of the sun. Star B is a white dwarf with a temperature of 15000 Kelvin and a radius 1000 times smaller than our sun.
a. What wavelength is the peak of the emission of star A? What wavelength is the peak of the emission of star B? In what part of the electromagnetic spectrum will you find the peak of the spectrum of star A? What about star B?
a. What wavelength is the peak of the emission of star A? What wavelength is the peak of the emission of star B? In what part of the electromagnetic spectrum will you find the peak of the spectrum of star A? What about star B?
Astronomy | Astrophysics
For Toronto, ON Canada, which day would the following stars appear near the Zenith Point? a. Capella b. Denab c. Alkaid?
