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2 years ago

. Một bình kín không dãn nở, chứa 14g nitơ ở 1atm và 27°C, được đung nóng làm áp suất tăng lên đến 5atm. Hãy xác định:

Physics

1 answer:

Aleonysh [2.5K]2 years ago

8 0

Answer:

t5 is a great place to work for and I am very excited about this opportunity and I look forward to working with you and I look

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I like your handwriting boy

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3 years ago

Using a screwdriver to pry off the lid to a paint can is an example of a second class lever.

Serggg [28]

Is this a question? Please provide more information.

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3 years ago

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It's a duty of the AHJ to

sammy [17]

The duty of the AHJ is to: (C). review installation designs and determine if they fall under Code jurisdiction

<h3>Meaning of AHJ</h3>

AHJ can be defined as that means Authority Having Jurisdiction

AHJ can be defined as an organization, office, or individual that are responsible for the issuance of permits, enforcing the requirements of a code or standard and approving materials or a procedure.

In conclusion, The role of the AHJ are outlined in the paragraph above.

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1 year ago

What is the coefficient of friction between the skates and the ice?

natta225 [31]

The coefficient of friction is 0.051

Explanation:

The motion of the skater is a uniformly accelerated motion, therefore we can use the following suvat equation:

$v^2 - u^2 = 2as$

where:

v = 0 is the final velocity of the skater (he comes to a stop)

u = 10.0 m/s is his initial velocity

a is the acceleration

$s=1.0\cdot 10^2 m = 100 m$ is the distance he travels before stopping

Solving for a, we find the acceleration of the skater:

$a=\frac{v^2-u^2}{2s}=\frac{0-10.0^2}{2(100)}=-0.5 m/s^2$

We also know that the net force acting on the skater is the force of friction, therefore we can write (Newton's second law of motion):

$F= ma = -\mu mg$

where

$-\mu mg$ is the force of friction

m is the mass of the skater

$\mu$ is the coefficient of friction

$a=-0.5 m/s^2$ is the acceleration

$g=9.8 m/s^2$ is the acceleration of gravity

Solving for $\mu$ , we find the coefficient of friction:

$\mu = -\frac{a}{g}=-\frac{-0.5}{9.8}=0.051$

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3 years ago

Determine the amount of work done when a crane lifts a 100-N block form 2m above the ground to 6m above the ground

Dima020 [189]

Data given:

F=100N

Δx=6m-2m=4m

A=?

Formula needed:

A=F×s

Solution:

A=100N×4m

A=400J

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3 years ago