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Kitty [74]
3 years ago
6

How many elements are in the lanthanide series?

Physics
2 answers:
Nina [5.8K]3 years ago
8 0
There are 14 elements in the lanthanide series with the atomic numbers of 58 thru 71.
Oksi-84 [34.3K]3 years ago
4 0
The lanthanide series consists of the 14 elements<span>, with atomic numbers 58 through 71, that follow lanthanum on the periodic table of elements.</span>
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What is the mirror formula for curved mirrors
Reika [66]
The mirror formula for curved mirrors is:
\frac{1}{f}= \frac{1}{d_o}+ \frac{1}{d_i}
where
f is the focal length of the mirror
d_o is the distance of the object from the mirror
d_i is the distance of the image from the mirror

The sign convention that should be used in order to find the correct values is the following:
- f: positive if the mirror is concave, negative if the mirror is convex
- d_i: positive if the image is real (located on the same side of the object), negative if it is virtual (located on the opposite side of the mirror)

3 0
3 years ago
Read 2 more answers
The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. Which comparison is best supported by this
Vesnalui [34]
The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. the <span>comparison is best supported by this information is that beryllium has a lower atomic radius than Barium</span>
8 0
3 years ago
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Filament bulbs give off lots of __________ that transfers wasted energy to the surroundings. What word completes the sentence?​
Anika [276]

Answer:

filament bulbs give off lots of metal filament that transfers wasted energy to the surrounding.

6 0
3 years ago
If two objects have the same mass, what determines the strength of the gravitational force between them? (4 points) Select one:
Evgen [1.6K]

According to this equation

F = G × m₁*m₂ ÷ r²

other than the mass, the distance also affects the gravitational force between two objects (same mass or not).

Therefore the correct answer is B. The distance between the objects

Future note* use formulas to help you figure these sort of questions out. (if they have a formula to begin with).

3 0
3 years ago
You walk six blocks east along 12th Street, then three blocks west, then one block east, then six blocks east, then seven blocks
Oksana_A [137]
Displacement depends upon the path taken as it is a vector.

From your problem above we would have a total displacement of;
Defining +x direction as east and -x direction as west

6east-3west+1east+6east-7west

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So even though they walked a total of 17 blocks it ends up only being 3 blocks total in +xdirection that was travelled by displacement.

Any questions please ask.
5 0
3 years ago
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