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3 years ago

The rate of change in position at a given point in time

Physics

1 answer:

mamaluj [8]3 years ago

3 0

Answer:

Velocity

Explanation:

The rate of change in position at a given point in time is called velocity.

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Troyanec [42]

Answer:

It is likely to be option B: 50 degrees and 50 degrees

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3 years ago

A certain reaction with an activation energy of 185 kJ/mol was run at 525 K and again at 545 K . What is the ratio of f at the h

Kazeer [188]

Answer: The ratio of f at the higher temperature to f at the lower temperature is 4.736

Explanation:

According to the Arrhenius equation,

$f=A\times e^{\frac{-Ea}{RT}}$

or,

$\log (\frac{f_2}{f_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$f_1$ = rate constant at 525K

$K_2$ = rate constant at 545K

$Ea$ = activation energy for the reaction = 185kJ/mol= 185000J/mol (1kJ=1000J)

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = 525 K

$T_2$ = final temperature = 545 K

Now put all the given values in this formula, we get

$\log (\frac{f_2}{f_1})=\frac{185000J/mol}{2.303\times 8.314J/mole.K}[\frac{1}{525K}-\frac{1}{545K}]$

$\log (\frac{f_2}{f_1})=0.6754$

$(\frac{f_2}{f_1})=4.736$

Therefore, the ratio of f at the higher temperature to f at the lower temperature is 4.736

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3 years ago

An internet radio broadcast isA. not excludable and not rival in consumption.B. excludable and not rival in consumption.C. exclu

rodikova [14]

Answer:

A. not excludable and not rival in consumption.

Explanation:

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3 years ago

The motor of an electric drill has a power input of 1200 W. How much work 3 points

elixir [45]

Answer:

Explanation:

1 Watt = 1 J/s

1200 J/s(2 min)(60 s/min) = 144 KJ

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2 years ago

Which planet has an enormous storm called the Great Red Spot swirling in its atmosphere?

matrenka [14]

Jupiter has an enormous storm called the Great red Spot swirling in its atmosphere.

answer: a. Jupiter

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4 years ago

Read 2 more answers