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3 years ago

8

What factors can influence the rate of reaction

2 answers:

mario62 [17]3 years ago

7 0

Temperature, Concentration, and Catalyst

HACTEHA [7]3 years ago

6 0

Temp, concentration, presence of a catalyst and surface area

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Nervous tissue makes up most of the

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, Nervous tissue is composed of two types of cells, neurons and glial cells. Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the computation and communication that the nervous system provides.

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A group of several electric cells connected together is called

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The right answer is B, the battery.

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How many water (in kg) can raise its temperature from 23°C to 100°C by adding 21500 Joules of energy?

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3 years ago

An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is

amm1812

Answer: $1.066\times 10^7 m/s$

Explanation:

Given

Charge per unit area on each plate( $\sigma$ )= $2.2\times 10^{-7}$

Plate separation(y)=0.013 m

and velocity is given by

$v^2-u^2=2ay$

where a=acceleration is given by

$a=\frac{F}{m}=\frac{eE}{m}$

e=charge on electron

E=electric field

m=mass of electron

$E=\frac{\sigma }{\epsilon _0}$

$a=\frac{e\sigma }{m\epsilon _0}$

substituting values

$v=sqrt{\frac{2e\sigma y}{m\epsilon _0}}$

$v=\sqrt{\frac{2\times 1.6\times 10^{-19}\times 2.2\times 10^{-7}\times 0.013}{9.1\times 10^{-31}\times 8.85\times 10^{-12}}}$

$v=1.066\times 10^7 m/s$

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3 years ago