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4 years ago

A 100-year flood is the flooding elevation that has a one percent chance of happening each year. Why is the name misleading

1 answer:

5 0

One percent annual chance of flooding does not mean it will happen with absolute certainty once every 100 years. Just that the expected value of a flood in 100 years is one.

As an example, heads has a 50% chance of happening every coin flip. With 2 coin flips, the expected value is one. However, it would be a misnomer to call "heads" a 2-flip outcome.

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The velocity selector in in a mass spectrometer consists of a uniform magnetic field oriented at 90 degrees to a uniform electri

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Answer:

50k/h is the answer to iy

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3 years ago

The force shown in the force vs. time diagram in Figure P6.15 acts on a 1.5-kg object. Find (a) the impulse of the force, (b) th

Eduardwww [97]

(a) The impulse of the force is 8 N.s

(b) The final velocity of the object if it is initially at 5.33 m/s

(c) The final velocity of the object if it is initially moving along the x - axis with velocity of 22.0 m/s is 3.33 m/s

<h3>What is impulse?</h3>

The change in momentum is equal to the product of impact force applied while colliding and time for that impact.

Impulse = F. Δt = m (Vf -Vi)

where, Vf is the final velocity and Vi is the initial velocity.

Given, the force shown in the force vs. time diagram acts on a 1.5-kg object.

(a) Impulse is given by

Impulse = F. Δt

Put the values, we get

Impulse = 2x3 + 1/2 x2x2

Impulse = 6+2 = 8N.s

Thus, the impulse from the graph is 8 N.s

(b)

Impulse= F. Δt = m (Vf -Vi)

Substitute the values into the expression, we get

8 = 1.5 x (Vf - 0)

Vf = 5.33 m/s

Thus, the final velocity of the object if it is initially at 5.33 m/s

(c)

Impulse= F. Δt = m (Vf -Vi)

Substitute the values into the expression, we get

8 = 1.5 x (Vf +2)

Vf = 3.33 m/s

Thus the final velocity of the object if it is initially moving along the x - axis with velocity of 22.0 m/s is 3.33 m/s.

Learn more about impulse.

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4 0

2 years ago

9. The acceleration due to gravity on the

laiz [17]

W=mg
W=75(1.6)
W=120N
a. 120N

6 0

3 years ago

The rebirth of science and learning during the fifteenth century is termed the

Pepsi [2]

The Renaissance, was the rebirth to science as well as many other advancements

5 0

4 years ago

A small aircraft, on a heading of 225°, is cruising at 150 km/h. It is encountering a wind blowing from a bearing of 315° at 35

ki77a [65]

As we can see in the figure attached here

The velocity of aircraft is given as

$v_p = 150 km/h$ at 225 degree

velocity of wind is given as

$v_a = 35 km/h$ at 315 degree

so here the net velocity of aircraft will be the vector sum of aircraft speed and wind speed

since in the figure we can see that the two speeds are perpendicular to each other

so we can say that the resultant of two speed can be given by using Pythagoras theorem

so we will have

$v_{net} = \sqrt{v_a^2 + v_p^2}$

$v_{net} = \sqrt{150^2 + 35^2}$

$v_{net} = 154 km/h$

so net speed of aircraft will be 154 km/h

6 0

3 years ago