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3 years ago

f a net force of 4 N caused a football to accelerate 8 m/s2 across a football field, what was the mass of the football?

Chemistry

1 answer:

bonufazy [111]3 years ago

7 0

Answer:

f=ma

m=f/a

m=4/8

m=0.5g

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A voltaic cell using Cu/Cu²⁺ and Sn/Sn²⁺ half-cells is set up at standard conditions, and each compartment has a volume of 345 m

Nadusha1986 [10]

The mass of copper deposited is 9.589 g .

Given ,

A volatile cell using Cu/Cu2+ and Sn/Sn2+ half cells is set up at standard conditions ,and each compartment has a volume of 345 ml .

current = 0.17 A

time = 48 hrs =48 (60) (60) =172800 sec

we know , I = Q/t

thus , Q ,charge= It = 0.17 (17280) =29376 C

Then ,atomic mass of copper is 63 g

And valency of Cu is 2.

Thus , the equivalent mass of copper is 63/2 = 31.5

We know , 96500 coulombs of electricity produce copper = 31.5 g

29376 C of electricity produce copper =9.589 g

Hence , 9.589 g of Copper is deposited .

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Answer:

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Given data:

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now we will put the values in formula.

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λ = 3×10⁸ m/s /2.7 s⁻¹

λ = 1.1×10⁸ m

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