The oldest algal fossils are found on the continent of ______________
Fill in the blank(s) with correct word
Australia
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A neutron star must have a mass greater than 2.4 solar masses
a. True b. False Indicate whether the statement is true or false
A sphere is constructed of two concentric pieces. The inner part is a solid sphere of radius 10.0 cm made of a material with density 4000 kg/m3. The outer part is a spherical shell with inner radius 10.0 cm and outer radius 20.0 cm
The outer shell has a density 9000 kg/m3. (a) What is the mass of this sphere? (b) What is the average density of this sphere?
Because the probe came so close, Voyager 1 sent back high resolution photos of detail on the surface of Titan in 1980
Indicate whether the statement is true or false
The quantity h in the Bohr theory is called ______________
Fill in the blank(s) with correct word