With volume and molar quantity held constant, by what factor does the absolute temperature change for an ideal gas when the pressure is five times bigger?
a. 1/5
b. 1
c. 5
d. 25
c
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Which of the following was NOT a contribution of Galileo to astronomy?
A) Sunspots showed the Sun was rotating on its axis, like the Earth does. B) The four moons of Jupiter are a model for the solar system motions in general. C) The phases of Venus prove it orbits completely around the Sun. D) The changing appearance of Saturn's rings corresponds to our seasons. E) The craters and mountains of the Moon prove it a world in its own right.
The lengthening of the wavelength of a photon as it escapes from a gravitational field is known as__________
A) gravitational blueshift B) gravitational redshift C) photonic adaptation D) photon occultation
Briefly explain the different types of supernovae
What will be an ideal response?
Betelgeuse is a red supergiant star in the constellation Orion. It radiates heat at the rate of 2.70 × 1030 W and has a surface temperature of 3000 K. Assuming that it is a perfect emitter, what is the radius of Betelgeuse?
The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 · K4. A) 7.80 × 1010 m B) 8.70 × 1010 m C) 1.40 × 1011 m D) 1.90 × 1011 m E) 2.16 × 1011 m