The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
Answer:
<em>a= In scientific notation</em>
6.96×10⁵ Km
<em>b =In expanded notation</em>
0.00019 mm
Explanation:
Given data:
Radius of sun = 696000 Km
size of bacterial cell = 1.9 ×10⁻⁴ mm
Radius of sun in scientific notation = ?
Size of bacterial cell in expanded notation = ?
Solution:
Radius of sun:
696000 Km
<em>In scientific notation</em>
6.96×10⁵ Km
Size of bacterial cell:
1.9 ×10⁻⁴ mm
<em>In expanded notation</em>
1.9/ 10000 = 0.00019 mm
Answer:
4.993 ×10⁻¹¹ J
Explanation:
The <em>nuclear binding energy</em> is the energy equivalent to the mass defect.
The <em>mass defect</em> is the difference between the mass of a nucleus and the sum of the masses of its nucleons.
<em>Calculate the mass defect
</em>
16 p = 16 × 1.007 28 u = 16.116 48 u
16 n = 16 × 1.008 67 u = 16.138 72 u
Total mass of nucleons = 32.255 20 u
- Mass of S-32 = <u>31.972 070 u
</u>
Mass defect = 0.283 13 u
Convert the <em>unified atomic mass units to kilograms</em>.
Mass defect
Use Einstein’s equation to <em>convert the mass defect into energy</em>
Answer:
The cost of electricity for 100 W power bulb = $ 32.85
Cost of electricity for 0.025 W fluorescent bulb = $ 8.2125
Explanation:
Cost of electricity = $ 0.18 per KW-H
Time = 5 hour per day
Bulb power = 100 W = 0.1 KW
Fluorescent bulb power = 25 W = 0.025 KW
(a) Cost of electricity for 100 W power bulb
0.1 × 5 × 365 × 0.18 = $ 32.85
(b) Cost of electricity for 0.025 W fluorescent bulb
0.025 × 5 × 365 × 0.18 = $ 8.2125
Therefore the cost of electricity for 100 W power bulb = $ 32.85
Cost of electricity for 0.025 W fluorescent bulb = $ 8.2125
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