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pshichka [43]
3 years ago
6

6. Thorium-234 decays by giving off one particle, and the decay can be represented by the following nuclear equation:

Physics
1 answer:
Nady [450]3 years ago
8 0

<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.

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A tangential force of 1500 N exerted upon the upper surface of a cube of 20 cm edge. Calulate the shear modulus of the cube mata
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<em>modulus of rigidity η = \frac{(shearing \ stress)}{(shearing \  strain)}</em>

<em>= \frac{37500}{0.005}=7.5 \times 10^6  N/m^2</em>

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