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sineoko [7]
3 years ago
8

What’s the best way to survive an elevator crash

Physics
1 answer:
Nady [450]3 years ago
3 0

stand with your knees bent to absorb the impact, like a skydiver. Theoretically, your legs would flex as you and the elevator touched down, spreading your body's deceleration over a longer period (impact force is proportional to speed and mass, and inversely proportional to time and stopping distance the longer the time spent stopping, the less the force). The effectiveness of this approach at high speeds, however, remains unclear, and research shows that you would likely be subjecting your knees and legs to greater injury risk at low speeds. This approach also keeps your body parallel to the lines of force, which increases the chance of bone breakage as you crumple to the floor under high load.

Hope this helps have a good day.....

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A car has negative acceleration. What information can you infer from this?
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The car is not moving,or either it is going backwords
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3 years ago
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How much gravity does an apple with 50n have?
hram777 [196]

Answer:

hope you like it

Explanation:

Another way to perceive this is 1 G = 9.81 Newtons per Kilogram so 50 G =490.5 Newtons per Kilogram. The 100 gram apple at 1 G has 0.981 Newtons of force and at 50 G has an apparent weight of 5 KG or 49.05N.

7 0
3 years ago
Consider a pipe of length L that is open at both ends. What are the wavelengths of the three lowest-pitch tones produced by this
lina2011 [118]

Answer:

2 L, L, 2 L/3

Explanation:

For a pipe of length l open at both ends, the length of the pipe is given by :

l=\dfrac{n\lambda}{2}

or

\lambda=\dfrac{2l}{n}

For first pitch tone, n = 1

\lambda_1=2l

For first pitch tone, n = 2

\lambda_2=\dfrac{2l}{2}

\lambda_2=l

For first pitch tone, n = 3

\lambda_3=\dfrac{2l}{3}

\lambda_3=\dfrac{2l}{3}

So, the wavelengths of the three lowest-pitch tones produced by this pipe are 2 L, L, 2 L/3 respectively. Hence, the correct option is (d)

8 0
3 years ago
If a spring is stretched 4m from its starting length when 20n of force is applied, then how much work (in joules) is done by the
lys-0071 [83]

ANSWER:

250 J

STEP-BY-STEP EXPLANATION:

F = 20N is required to stretch the spring by 4 meters

We know that the force is equal to:

F=k\cdot x

We solve for k (spring constant):

k=\frac{F}{x}=\frac{20}{4}=5\text{ N/m}

The work done in stretching the spring is given by the following equation (in this case the stretch is 10 meters:

\begin{gathered} W=\frac{1}{2}k\cdot x^2 \\ \text{ Replacing} \\ W=\frac{1}{2}\cdot5\cdot10^2 \\ W=250\text{ J} \end{gathered}

The work required is 250 joules.

5 0
2 years ago
What is the specific heat capacity of silver metal if 55.00 g of the metal
AVprozaik [17]

Answer:

0.240 J/g/°C

Explanation:

q = mCΔT

47.3 cal = (55.00 g) C (15.0°C)

C = 0.0573 cal/g/°C

Usually, specific heat is measured in J/g/°C, so we can convert:

C = 0.0573 cal/g/°C × 4.184 J/cal

C = 0.240 J/g/°C

3 0
4 years ago
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