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Bingel [31]
3 years ago
8

From left to right across a period in the periodic table, elements become less ___________ and more ______________ in their prop

erties.
Physics
2 answers:
leonid [27]3 years ago
7 0
***elements become less electropositive and more electronegative in their properties...
Paul [167]3 years ago
6 0

Explanation:

When we move across a period in the periodic table then there occurs an increase in the electronegativity of the elements because of decrease in their atomic size.

Electronegativity is the ability of an atom to attract electrons towards itself.

This also means that on moving from left to right in a periodic table elements become less electropositive in nature.

Therefore, we can conclude that from left to right across a period in the periodic table, elements become less electropositive and more electronegative in their properties.

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3 years ago
1)the car's engine power is 44000W. Explain this number in a physical sense
Ratling [72]

Answer:

1) It expresses the rate (top speed) at which it can move with time.

2) P = 20 W

3) h = 18 km

Explanation:

1) Power is the rate of transfer of energy.

⇒ Power = \frac{Energy(or workdone)}{Time}

i.e P = \frac{E}{t}

Thus a car's engine power is 44000W implies that the engine of the car can propel the car at this rate. This expresses the rate (top speed) at which it can move with time.

2) m = 400g = 0.4 kg

    t = 20 s

h = 100m

g = 10 m/s^{2}

P = \frac{mgh}{t}

  = \frac{0.4*10*100}{20}

  = \frac{400}{20}

P = 20 W

3) u = 600 m/s

   g = 10 m/s^{2}

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V^{2} = U^{2} - 2gh

V is the final velocity, U is the initial velocity, h is the height.

0 = (600)^{2} - 2 x 10 x h

0 = 360000 - 20h

20h = 360000

h = \frac{360000}{20}

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The maximum height of the bullet would be 18 km.

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Answer:

nitrogen

Explanation:

because I also had this in exam and I was correct

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