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Amiraneli [1.4K]
3 years ago
14

1. The 10-min unithydrograph for a 2.25 km2 urban catchment is given by:(a) estimate the run off hydrograph for a 10-min rainfal

l excess of 5.5 cm, (b) estimate the run off hydrograph for a 30-min rainfall. What is the rainfall excess
Physics
1 answer:
vivado [14]3 years ago
5 0

Answer:

A ) Find the direct runoff depth; d =V A 22,698 _ 2.25x106 =0.01m =1cm The above result shows that the given hydrograph qualifies as a unit hydrograph. .

Explanation:

Brainlyist

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Yuri [45]
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6 0
3 years ago
A skydiver of mass 80.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 50.0 m/s. (a) What is her accelerat
kirill [66]

Answer:

6.22²

Explanation:

Given that

Mass of the skydiver, m = 80 kg

Terminal speed of the skydiver, v(f) = 50 m/s

Speed of the skydiver, v(i) = 30 m/s

Acceleration of the skydiver, a = ?

To solve this, we use the formula

W - k v² = ma, where

W = weight of the skydiver

k = constant

v = speed of the skydiver

m = mass of the skydiver

So, if we substitute the values into it we have

W = mg = 80 * 9.8 = 784 N

784 - k 50² = 80 *0

784 - 2500k = 0

784 = 2500k

k = 0.3136

Now, we use this value of k to find the needed acceleration using the same formula at a speed of 30 m/s

784 - 0.3136 * 30² = 80 * a

784 - 0.3136 * 900 = 80a

784 - 282.24 = 80a

497.76 = 80a

a = 497.76 / 80

a = 6.22 m/s²

Thus, we can conclude that the acceleration when the speed of the skydiver is 30 m/s, is 6.22 m/s²

4 0
3 years ago
Please help!?!?!?!?!?!?!
adoni [48]

Answer:

D

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5 0
3 years ago
Hydrogen cyanide (HCN) is a product of combustion that:
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b. is equally as toxic as carbon monoxide (CO).

Explanation:

Hydrogen Cyanide is a product of combustion that is equally as toxic as carbon monoxide CO.

The gas is a product of combustion in blast furnances, coke ovens, e.t.c

  • Just like carbon monoxide, they are blood agents that are toxic in the body
  • Prolonged exposure to hydrogen cyanide can lead to death eventually.
  • The gas is a able to produce cyanide ion that seriously impacts the process of cellular respiration and bringing it to a halt.
  • It is listed as one of the dangerous chemical weapons.

Learn more:

Safety data sheets brainly.com/question/2188622

#learnwithBrainly

5 0
3 years ago
Physical properties of a base include...
neonofarm [45]

The correct answer is A

8 0
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