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DIA [1.3K]
3 years ago
9

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?The rate w

ould increase.The rate would decrease.The rate would remain the same.The rate would go up and down.
Physics
1 answer:
VikaD [51]3 years ago
8 0

Answer:the rate of the reaction will decrease

Explanation:the lower the activation energy the lower the rate at which products would be forked because there won't be effective collision to give product

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If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is
expeople1 [14]

Answer:

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v2^2 = 2 g H + v1^2

Since 88 ft/sec = 60mph   we have 30 mph = 44 ft/sec

The object will return with the same speed that it had initially so the object

starts out with a downward speed of 44 ft/sec

Then v2^2 = 2 * 32 ft/sec^2 * 160 ft + 44 (ft/sec)^2

v2^2 = (2 * 32 * 160 + 44^2) ft^2 / sec^2 = 12180 ft^2/sec^2

v2 = 110 ft/sec

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4 0
3 years ago
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How can velocity change even if speed stays the same?​
VARVARA [1.3K]

Answer:

the change of direction it's going

5 0
3 years ago
A girl and a boy are riding on a merry go round that is turning at a constant rate. The girl is near the outer edge, and the boy
galina1969 [7]

Answer:

The girl has greater tangential acceleration

Explanation:

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\alpha = \frac{d\omega}{dt}

Since all the points of the merry go round complete 1 circle in the same time, the angular velocity of each point of the merry go round is the same, and so all the points also have the same angular acceleration.

The tangential acceleration instead is given by

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r is the distance from the centre of the merry go round

Since the girl is near the outer edge and the boy is closer to the centre, the value of r for the girl is larger than for the boy, so the girl has greater tangential acceleration.

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Just find the density of every metal and select the one with a density of 2.71 g/cm³ . This is:

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ρ = m/V

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ρ = 7.367 g / cm³

Metal 2

ρ = m/V

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<h2>R / Metal 4 was selected.</h2>
4 0
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