The possible resulting chemical formulas for an ionic compound with calcium given the respective charges of the ions are: CaO, CaMg, or CaF₂ and CaO, CaF₂, or CaCl₂. This is because when dealing with these compounds, you simply need to interchange the oxidation state of the two elements and place as the subscript of the element. For instance, when we have Ca²⁺ and F⁻, the result is CaF₂. However, when the oxidation states of the two compounds are equal, the subscript is 1. That is, for Ca²⁺ and Mg²⁻, the result is CaMg. And for Ca²⁺ and Cl⁻, the result is CaCl₂.
Answer:
Explanation:The rotational inertia of any object depends directly on the distance the mass is from the axis of a rotating object
Having more mass at the sides will increase the rotational inertia of the object that is why a Hollow sphere having same M and R as the solid one has more rotational inertia as it has more mass at the sides.
The sphere have some mass at the center but most of its mass is closer to its radius and thus have more inertia than flat Disk.
The same relation exist between a flat disk and hollow sphere. The hollow sphere have some mass at the center but most of its mass is closer to its radius and thus have more inertia.
The rotational of the objects can be calculated by these equations
Without magnetic domains a magnet would have its magnetism. Magnetic domains are clusters of iron atoms that line up in the same direction when magnetized. When not magnetized the iron atoms scatter.
Answer: There should be one brush on each slip ring.
Explanation:
A device that converts mechanical energy into electrical energy is known as an electric generator. The magnets are kept surrounding armature and axle. The armature rotates in between the magnets. This generates electric current which is detected by the ammeter.
It is based on Faraday's law - when a conductor moves in a magnetic field, an emf is induced in the conductor. Thus, a battery is not required. There should be one brush on each slip ring because the brushes must make contact with the rotating rings to supply current to the coil.
Answer:
Let's imagine this is the diagram for the question,
•
3*440= / |
/ |
1320mi ↑ |
↑ ↓
/ ↓
/ |
• ) 89⁰ |
\ | "x" miles
\ ↑
\ ↑
↓ |
↓ |
3*420= \ |
1260 mi \ |
•
From the Cosine Rule: x² = y² + z² - 2 y z cos X⁰
x² = 1320² + 1260² - 2 * 1320 * 1260 * cos 89⁰ =
1742400 + 1587600 - 3326400 * cos 89⁰ = 3271946315
x ≈ 1809 mi
Hence, the planes are 1809 miles from each other 3 hours after takeoff?
