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Arada [10]
4 years ago
6

Match the letters to the numbers for 30 points!

Physics
2 answers:
liq [111]4 years ago
7 0

-- 'Ca' (Calcium) is an element.
-- The proton has a positive charge.
-- Nuclear fusion results in the synthesis of atoms of new elements.
-- H₂O (water) is a chemical compound.
-- Nuclear fission is a decay of the nucleus.
-- The atomic number of an element is the number of protons
      in each atom of it.
-- I suppose you're using the Greek letter  <span>η  ('eta', not 'nu')
      to represent the neutron.
-- I suppose you're using ' e ' to represent the electron.
</span>
labwork [276]4 years ago
4 0
1-a
2-d
3-e
4-c
5-g
6-b
7-h
8-f
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Please answer this.
lilavasa [31]

Answer:

the answer is c

Explanation:

it's c because the moon has to be a full moon to be a solar eclipse when the sun moon and earth line up

6 0
3 years ago
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Write the formula used to calculate the weight of an object
Leno4ka [110]

One possible formula is

<em>Weight = (mass of the object) x (acceleration of gravity where the object is).</em>


5 0
3 years ago
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Two balloons are charged with an identical quantity and type of charge: -6.25 nanoCoulombs (10-9). They are held apart at a sepa
xenn [34]

Answer:

force between both the balloons is 9.23\times 10^{-7}N  

Explanation:

It is given charge on both balloons are same and equal to q=-6.25\times 10^{-9}C

Separation between both the balloons r=61.7cm=0.617m

According to Coulomb's law force between two charges is given by

F=\frac{1}{4\pi \epsilon _0}\frac{q^2}{r^2}=\frac{Kq^2}{r^2}

Therefore force is equal to

F=\frac{9\times 10^9\times (-6.25\times 10^{-9})^2}{0.617^2}

F=9.23\times 10^{-7}N

So force between both the balloons is 9.23\times 10^{-7}N

3 0
3 years ago
A cube with sides of length 2cm has a mass of 7.36g . calculate the density of the cube
kondor19780726 [428]
Density = 7.36 grams ÷ (2 cm × 2 cm × 2cm) = 0.92 g/cm^3

7 0
3 years ago
Orbiting satellites use geothermal energy panels. <br><br> True <br> False
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False, geothermal means from underground. They use normal solar panels. Hope this helps.
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