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3 years ago

What can engineers do to prevent structures from collapsing during earthquakes

Physics

1 answer:

vredina [299]3 years ago

3 0

Explanation:

1. The structures should be made with good quality steel and concrete so that they can bear load and deformation.

2. Buildings should be made laterally strong so that they can overcome dominant lateral forces.

3. In High seismic activity areas devices such as energy absorbers should be used. Base isolation must necessarily be done.

4. Use of hybrid Fiber Reinforced Concrete to increase the toughness of a structure in a Moment Resisting Frame. Moment resisting frames are frames that resist moment of any devices.

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The drag force that resists the motion of a car traveling at 80 km h^- 1 is 300 N.

kobusy [5.1K]

The power require to keep the car traveling is 6,666 W.

The power of the engine at the given efficiency is 3,999.6 W.

<h3>What is Instantaneous power?</h3>

This the product of force and velocity of the given object.

The power require to keep the car traveling is calculated as follows;

P = Fv

$P = 300\ N \ \times \ \frac{80 \ kmh^{-1}}{3.6 \ km h^{-1}/m/s} \\\\
P = 300 \ N \times 22.22 \ m/s\\\\
P = 6,666 \ W$

The power of the engine at the given efficiency is calculated as follows;

$E = \frac{P_{out}}{P _{in}} \times 100\%\\\\
60\% = \frac{P_{out}}{6,666} \times 100\%\\\\
0.6 = \frac{P_{out}}{6,666} \\\\
P_{out} = 3,999.6 \ W$

Learn more about efficiency here: brainly.com/question/15418098

8 0

2 years ago

The potential of electrons in a circuit can be increased by _____.

tresset_1 [31]

<span>The potential of electrons in a circuit can be increased by the action of a battery.

</span><span>♡♡Hope I helped!!! :)♡♡
</span>

6 0

2 years ago

Read 2 more answers

Make a Book Quilt Project about the book Bud, Not Buddy

Leya [2.2K]

Answer:

Explanation:

okkkkkkkkk

8 0

2 years ago

Read 2 more answers

An astronaut is doing repairs on the international Space Station. She throws a hammer into space with a velocity of 3m/s. How mu

Rainbow [258]

Answer:

The force is 15N

Explanation:

The formula is Force= mass × velocity.

From the question mass is 5kg, velocity is 3m/s.

F= 5×3

F= 15Newton.

Therefore the force is 15N.

3 0

3 years ago

Read 2 more answers

g Florence, who weighs 580 N, stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is a

Luda [366]

Answer:

$AW= m (g-a)$ (1)

$m= \frac{W}{g}$ (2)

$AW = \frac{W}{g} (g-a) = W - W \frac{a}{g}$ (3)

And we know from the info given that:

$W = 580 N, a = 2.3 m/s^2, g = 9.8 m/s^2$

And replacing into equation (3) we got:

$AW = 580 N - 580 N \frac{2.3 m/s^2}{9.8 m/s^2}= 443.878 N$

So then we can conclude that the scale will read 443.878 N for Florence

Explanation:

For this case we have an accelerator moving downward with an acceleration a.

On this case the person fell like the weight is less than the normal since the required force on the elevator floor is lower than the normal force, for this reason the body accelerate downward.

We can use the formula of apparent weight given by:

$AW= m (g-a)$ (1)

Where AW represent the apparent weigth of the person in the elevator

We also know that the weigth is defined as:

$W= mg$

If we solve for m we got:

$m= \frac{W}{g}$ (2)

If we replace equation (2) into equation (1) we got:

$AW = \frac{W}{g} (g-a) = W - W \frac{a}{g}$ (3)

And we know from the info given that:

$W = 580 N, a = 2.3 m/s^2, g = 9.8 m/s^2$

And replacing into equation (3) we got:

$AW = 580 N - 580 N \frac{2.3 m/s^2}{9.8 m/s^2}= 443.878 N$

So then we can conclude that the scale will read 443.878 N for Florence

8 0

3 years ago