The basic building blocks of matter are protons, neutrons, and electrons
Indicate whether the statement is true or false
TRUE
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When a high-mass star's core collapses, the star could ________.
A. explode as a supernova B. become a black hole C. become a pulsar D. become a neutron star E. All of these choices are correct.
Which of the following particles interact via the strong interaction?
A. gravitons B. quarks C. leptons D. neutrinos
A one pound (lbm) square of butter, 2.5 in by 2.5 in by 5 in at 50ºF is placed in a freezer at 28ºF as shown in the figure. If h is 10 Btu/hr?ft^2? ºF, the thermal conductivity is 0.114 Btu/hr?ft?ºF, specific heat is 0.52 Btu/lbm?ºF, and density is 56 lbm/ft^3, determine the time for the center to reach 35ºF.
The galactic _______________ contains very little gas and dust, old stars, and globular clusters
Fill in the blank(s) with correct word