All categories

3 years ago

1. Which of the following statement is correct?

Physics

2 answers:

ElenaW [278]3 years ago

8 0

<h3>1. Which of the following statement is correct?</h3>

A. You should panic when earthquake hits. ❌

B. You should run while the earthquake is going on. ❌

C. You should not follow what the proper authorities will tell you. ❌

$\sf\purple{D.\:You \:should \:prepare\: an \:emergency \:plan\: to \:cope\: with\: the\: disaster. }$ ✅

........................................................................

<h3>2. What should you do during an earthquake?</h3>

A. You should run out of the house. ❌

$\sf\pink{B.\:You\: should \:duck,\: cover, \:and \:hold.}$ ✅

C. You should panic and stay only inside the house. ❌

D. You should lock your door so that nobody can enter. ❌

........................................................................

$\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘$

Tanzania [10]3 years ago

3 0

Answer:

D. You should prepare an emergency plan to cope with the disaster.

B. You should duck, cover, and hold.

Explanation:

Because Panic and stress are the main reasons that make the situation worse during natural disasters. Disasters are aggravated when people add chaos to the equation. It's important not to panic during an earthquake. You must maintain a rational state of mind so that you don't do something regretful out of fear.

You might be interested in

An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day. What is the angle o

Fofino [41]

Answer:

32.1

Explanation:

NOTE: You did not state the angle of incidence, and thus, I will be using 45° as my angle of incidence, all you need to do is replace it with your own value if it's different.

To solve this question, we are going to be using Snell's Law.

Snell's law describes the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

Snell's law is mathematically given as

sin(A1)/sin(A2) = n2/n1, where

n1 = incidence index

n2 = refracted index

A1 = incidence angle

A2 = refracted angle

The refraction index of oil is 1.15, and that of water is 1.33, so

if we take oil first,

sin A2 = (n1.sinA1)/n2

sin A2 = (1 * sin 45)/1.15

sin A2 = 0.7071/1.15

sin A2 = 0.6149

A2 = sin^-1 0.6149

A2 = 37.9°

Then

sin A3 = (1.15 * sin 37.9) / 1.33

sin A3 = (0.6149 * 1.15) / 1.33

sin A3 = 0.7071 / 1.33

sin A3 = 0.5317

A3 = sin^-1 0.5317

A3 = 32.1

4 0

3 years ago

What is the distance between corresponding points of adjacent waves

expeople1 [14]

Answer:

Wavelength

Explanation:

The distance between corresponding points of adjacent waves is known as the wavelength.

In a wave motion, the point at which displacement is at maximum is known as the crest of the wave while the point where the displacement is at minimum is known as the trough of the the wave.

The distance between these two successive crest and trough of he wave as known as its wavelength.

Wavelength can be expressed as a function of frequency and velocity of a wave.

8 0

3 years ago

Read 2 more answers

What does the author describe in the passage?

Nata [24]

Issac newton made the laws of gravity

5 0

3 years ago

How do you determine the standard error on the slope in a simple harmonic motion graph

elena-14-01-66 [18.8K]

Answer:

by standing on the top of cliff

5 0

3 years ago

The lever PQ is welded to the bent rod QSTU which is supported by a single thrust bearing at S and by the rigid link UV. Link UV

valentinak56 [21]

Answer:

The answer to the questions are as follows

a) The magnitude of the force in UV = 512.41 N

b) The five support reaction components are

1. PQ turning moment force about the z axis

2. PQ turning moment force about the y axis

3. UV turning moment force about the y axis

4. UV turning moment force about the z axis

5. UV turning moment force about the x axis

Please see below

Explanation:

When the system is in 3D equilibrium

Sum of forces in x direction = 0

Sum of forces in y direction = 0

Sum of forces in z direction = 0

Also, Sum of moments in x direction = 0

Sum of moments in y direction = 0

Sum of moments in z direction = 0

From the diagram, we have force in the +ve x direction = 600 N

Also moment about y = 600×0.08 = 48 Nm

Moment about z = 600×0.09 = -54 Nm

Moment about x, = 0 Nm

For the support S, taking moment about x = 0.05 × S

taking moment about y = 0

taking moment about z = 0

At point U, taking moment about y = -0.1U

moment about x = -0.05U

moment about z = -0.1U

Summing the moments we have

In the x, y and z directions

0 + 0.04Vy-1.46Vz -0.05Uz= 0.... (1)

48 + 0.1Vz-0.04Vx - 0.1Uz = 0... (2)

-24 + 0.146Vx-0.1Vy + 0.05Ux + 0.01Uy = 0.... (3)

Ux + Vx = 600 ....(4)

Uy = -Vy .....(5)

Uz = -Vz .......(6)

Solving the above 6 equations we get the following values

Ux = 242.28 N

Uy = -366.74

Uz = -10.40

Vx = 357.72N

Vy = 366.74N

Vz = 10.40N

The magnitude of the force in UV = $\sqrt{357.72^{2} + 366.74^{2} + 10.40^{2} }$ = 512.41 N

b) The five support reaction components are

1. PQ turning moment force about the z axis

2. PQ turning moment force about the y axis

3. UV turning moment force about the y axis

4. UV turning moment force about the z axis

5. UV turning moment force about the x axis

5 0

4 years ago