There are 120 seconds in two minutes, so to find the answer, you multiply 20 x 120 to get 2400 meters.
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Answer:

Explanation:
Using the angular formulas can determine the radius using both values neutron star and the the knowing star so



I=Inertia of the star
w=angular velocity


Notice the angular velocity determinate by the time and the Inertia have the radius value so






<span><span>23892</span>U→<span>l<span>23490</span></span>Th<span>+<span>42</span></span>He</span>
Explanation:
Uranium-238 produces thorium-234 by alpha decay.
An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.
During α-decay, an atomic nucleus emits an alpha particle. It transforms (or decays) into an atom with an atomic number 2 less and a mass number 4 less.
Thus, uranium-238 decays through α-particle emission to form thorium-234 according to the equation:
<span><span>23892</span>U→<span>l<span>23490</span></span>Th<span>+<span>42</span></span>He</span>
Note that the sum of the subscripts (atomic numbers or charges) is the same on each side of the equation.
Also, the sum of the superscripts (masses) is the same on each side of the equation.
<span>sound waves is an example of mechanical waves</span>