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aksik [14]
3 years ago
9

How much force is exerted on a 60 kg person who hits an airbag at 45 m/s if the impact takes 0.65 seconds? Please give me an exp

lanation as to how you got the answer if you can :)
Physics
1 answer:
seropon [69]3 years ago
5 0
     We must rewrite the Newton's <span>Second</span> Law:

F_{av}=ma_{av}~~~~"av"~means~average \\ F_{av}=m (\frac{\Delta v}{\Delta t} )~~Also~known~as~Impulse~Theorem
 
     Applying in the question:

F=60( \frac{45}{0.65} ) \\ \boxed {F \approx 4.15~kN}

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How do you do this problem?
kvasek [131]

Explanation:

First, find the velocity of the projectile needed to reach a height h when fired straight up.

Given:

Δy = h

v = 0

a = -g

Find: v₀

v² = v₀² + 2aΔy

(0)² = v₀² + 2(-g)(h)

v₀ = √(2gh)

Now find the height reached if the projectile is launched at a 45° angle.

Given:

v₀ = √(2gh) sin 45° = √(2gh) / √2 = √(gh)

v = 0

a = -g

Find: Δy

v² = v₀² + 2aΔy

(0)² = √(gh)² + 2(-g)Δy

2gΔy = gh

Δy = h/2

5 0
3 years ago
Describe the benefits and risks associated with nuclear energy.
Ulleksa [173]

Producing nuclear energy is far more environmentally friendly than burning fossil fuels. That is the main benefit.

The main risk is radiation. If the nuclear waste is not properly disposed of, it can leak radiation into the environment. Fortunately, this is not an issue since there are ways to deal with it. There is also the risk of a disaster like the Chernobyl incident, however that was mostly due to faulty reactor construction. However, reactors today are built to avoid such issues.

8 0
4 years ago
Two parallel plates 19 cm on a side are given equal and opposite charges of magnitude 2.0 ✕ 10^−9 C. The plates are 1.8 mm apart
Romashka [77]

Answer:

E   = 5291.00 N/C

Explanation:

Expression for capacitance is

C = \frac{\epsilon  A}{d}

where

A is area of square plate

D = DISTANCE BETWEEN THE PLATE

C = \frac{\epsilon\times(19\times 10^{-2})^2}{1.5\times 10^{-3}}

C = 24.06 \epsilon

C = 24.06\times 8.854\times 10^{-12} F

C =2.1\times 10^{-10} F

We know that capacitrnce and charge is related as

V = \frac{Q}{C}

 = \frac{2\tiimes 10^{-9}}{2.\times 10^{-10}}

v = 9.523 V

Electric field is given as

E = \frac{V}{d}

   = \frac{9.52}{1.8*10^{-3}}

E   = 5291.00 V/m

E   = 5291.00 N/C

5 0
3 years ago
What is the molar mass of C8H10N4O2
lesya [120]

Answer:

194,22g/mol

Explanation:

8*12,01+10*1,01+4*14,01+2*16=194,22g/mol

3 0
3 years ago
Read 2 more answers
Please give me the answer of this​
8_murik_8 [283]

Answer:

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Explanation:

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4 0
3 years ago
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