Linus builds an electrical circuit with a battery and with wires that carry the current. As the battery weakens, the current also weakens. How does this affect the magnetic field around the wires? A. The field gets stronger.
B. The field gets weaker.
C. The field changes direction.
D. The field disappears completely.
Answers
Answer: The correct answer is option (B).
Explanation:
The current carrying wire produces the magnetic field around it. More the current in the wire, stronger will be the magnetic strength around the wire. The magnetic field is stronger near this wire.
The direction of the magnetic field depends on the direction of the current.
In the given problem, Linus builds an electrical circuit with a battery and with wires that carry the current.The strength of the magnetic field depends on the amount of current flowing in the wire. As the battery weakens, the current also weakens.
Therefore, the magnetic field around the wires is weaker.
The magnetic field getting weaker is the correct answer when Linus builds an electrical circuit with a battery and with wires that carry the current. The correct answer is (B).
The strength of the magnetic field around the wires is directly proportional to the current flowing through the wires. As the battery weakens and the current decreases, the magnetic field strength around the wires also decreases.
Conversely, if the current increases, the magnetic field strength increases. This relationship is described by Ampere's law and the right-hand rule, which state that the magnetic field is directly proportional to the current.
Therefore, The correct answer is (B). The magnetic field getting weaker is the correct answer.
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3. By what property did Moseley suggest that the periodic table be arranged?
4. “The properties of the elements repeat periodically” defines the _____.
5. What is a period and how many are there in the periodic table?
6. What is a group (also called a family)? How many are there in the periodic table?
7. State the number of valence electrons in the following:
Element Valence Electrons
Magnesium
Phosphorous
Fluorine
Neon
8. Give the names and chemical symbols for the following:
Atomic Number Element Name Chemical Symbol
13
92
5
25
9. List, by number, both the period and group of each of these elements.
Element Symbol Period Group
Beryllium Be
Iron Fe
Lead Pb
10. Which of the following pairs of elements belong to the same period? Highlight
a. Na and Cl b. Na and Li c. Na and Cu d. Na and Ne
11. Which of the following pairs of elements belong to the same group? Highlight
a. H and He b. Li and Be c. C and Pb d. Ga and Ge
12. What group numbers are the transitions elements?
13. What are the group 1/IA elements called?
14. What are the group 2/IIA elements called?
15. What are the group 17/VIIA elements called?
16. What are the group 18/VIIIA elements called?
17. Which alkali metal belongs to the sixth period?
18. Which halogen belongs to the fourth period?
19. What element is in the fifth period and the eleventh group?
20. What is the heaviest noble gas?
21. What is the heaviest alkaline earth metal?
22. Would you expect strontium to be, chemically, more similar to calcium or rubidium and WHY?
23. List the three lightest noble gases.
24. List all of the alkali metals
Answers
Final answer:
The first published classification of the periodic table is by Dmitri Mendeleev who arranged it by atomic mass, but it was later rearranged by Henry Moseley by atomic number. This forms the basis of the modern periodic table. Various chemistry concepts related to the periodic table such as groups, periods, valence electrons, and names of certain elements are also discussed.
Explanation:
The first published classification of elements which forms the basis of our periodic table today was by Dmitri Mendeleev. Mendeleev initially arranged the elements by their atomic mass, and he noticed that the properties of elements repeated periodically when arranged in this order. However, later on, Henry Moseley suggested that the periodic table be arranged by atomic number (the number of protons in an atom's nucleus), which is how the modern periodic table is ordered.
"The properties of the elements repeat periodically" defines the Periodic Law. A 'period' in the periodic table is a horizontal row and there are 7 periods. A 'group' or 'family' in the periodic table is a vertical column and there are 18 groups.
Magnesium has 2 valence electrons, Phosphorous has 5, Fluorine has 7, and Neon has 8. The elements with atomic numbers 13, 92, 5, and 25 are Aluminum (Al), Uranium (U), Boron (B), and Manganese (Mn) respectively.
Beryllium (Be) belongs to period 2 and group 2, Iron (Fe) is in period 4 and group 8, and Lead (Pb) is in period 6 and group 14. The two pairs of elements that belong to the same period are Na and Cl, and Na and Ne. The pairs that belong to the same group are H and He, and Ga and Ge.
The transition elements are in groups 3-12. The group 1/IA elements are called Alkali metals, the group 2/IIA elements are called Alkaline earth metals, the group 17/VIIA elements are called Halogens, and the group 18/VIIIA elements are called Noble gases. The alkali metal that belongs to the sixth period is Cesium, the halogen that belongs to the fourth period is Bromine, the element in the fifth period and the eleventh group is Silver. The heaviest noble gas is Radon and the heaviest alkaline earth metal is Radium. Strontium is chemically more similar to Calcium, as they are in the same group and have the same number of valence electrons. The three lightest noble gases are Helium, Neon, and Argon, and the alkali metals are Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium.
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Answers
Answer:
65 meters to the right.
Explanation:
the shark moves to the right 30 meters and then to the left 15 making his new placement 15. he then moved to the right 50 meters making his new placement 65 meters to the right.
Answers
C.) They could not measure a change in stars' positions on the sky.
D.) They could not measure how big the Earth was.
Answers
Answers
Answer:
80 cm
Explanation:
the given condition is closed-end air column. The wavelength is four times the length of the air column for the standing wave pattern for the first harmonic.
The required wavelength of the standing wave pattern is
=
Answers
23h 56m 4.0906s is closer, but stillnot exact. You'll never see an 'exact'
number written anywhere. Firstbecause it doesn't work out to an exact
decimal of anything, and secondbecause it changes ! The Good Friday
earthquake in Alaska changed it,the Fukushima earthquake changed it,
the Nepal earthquake changed it,and the daily drag of the tides changes
it by something like 0.001second every century.
One thing's for sure: It is definitely not 24 hours.