Solids, liquids, and gases are called ______________ of matter
Fill in the blank(s) with correct word
phases
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Henrietta Leavitt first showed the relationship between the mass and luminosity of Cepheids and their period of pulsation; the brighter, the longer this period
Indicate whether the statement is true or false
Which of these is stated properly?
a. "The temperature of liquid nitrogen is 77 Kelvin.". b. "The temperature of liquid nitrogen is 77 Kelvins.". c. "The temperature of liquid nitrogen is 77 degrees Kelvin.". d. "The temperature of liquid nitrogen is 77 Kelvin degrees.".
A nonprismatic cantilever beam of one material is subjected to load P at its free end. Moment of inertia I2 5 2I1. The ratio r of the deflection ?B to the deflection ?1 at the free end of a prismatic cantilever with moment of inertia I1 carrying the same load is approximately:
(A) 0.25
(B) 0.40
(C) 0.56
(D) 0.78
Groombridge 34 is an M2 main sequence star. Based on this information, which statement is true? a. Groombridge 34 has a surface temperature that is more than the Sun
b. Groombridge 34 has mass that is greater than the Sun. c. Groombridge 34 is less luminous than the Sun. d. Groombridge 34 is more luminous than the Sun. e. Groombridge 34 is located near the upper left hand corner on the HR diagram.