The open universe would be geometrically flat
Indicate whether the statement is true or false
FALSE
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Why does Mars have more extreme seasons than Earth?
A) because it is farther from the Sun B) because it has a larger axis tilt C) because it has a much more eccentric orbit D) because it has more carbon dioxide in its atmosphere E) all of the above
What happens in electron capture?
a. The nucleus emits an electron, a neutron becomes a proton, and the atomic number goes up. b. The nucleus absorbs an electron, a proton becomes a neutron, and the atomic number goes down. c. The nucleus emits a positron, a neutron becomes a proton, and the atomic number goes down. d. The nucleus emits an electron, a neutron becomes a proton, and the atomic number goes down. e. The nucleus absorbs an electron, a proton becomes a neutron, and the atomic number goes up.
Why is it so important to model the possible mechanisms of failure in nuclear reactors? Explain why
What will be an ideal response?
At the point of fission, a nucleus of U-238, with 92 protons is divided into two smaller spheres each with 46 protons and a radius of 5.9 × 10^?15 m. What is the repulsive force pushing the two spheres apart when they are just touching one another? (The mass of the U-238 nucleus is 3.98 × 10^?25 kg.)