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2 years ago

Free coins be quick to get them

Physics

2 answers:

olga nikolaevna [1]2 years ago

7 0

Answer:

yeetshhdbdbdhdhdxsudhhdbdjdjd

elena-14-01-66 [18.8K]2 years ago

7 0

Answer:

Thanks Bruv

Explanation:

There's a baked potato on a chair

My mother was just sitting there

I thought I heard her in this room

Theres only one thing to assume

My mom has turned into a baked potato

I'm pretty sure potato transformations are fatal

The potato expert will be here soon

But he's just some scrawny Irish dude

My mom has turned into a baked potato

This saucer is wearing a wizard hat

Oh my God she's been cursed by a saucer-er

Hold on a minute is that my dad

My dad has been turned into a mashed potato and I think this one is medically worse

He was my favorite patriarch but now he's just a patri-staaaaaaarch

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A gas bottle contains 0.250 mol of gas at 730 mm hg pressure. if the final pressure is 1.15 atm, how many moles of gas were adde

Ludmilka [50]

Answer: 0.049 mol

Explanation:

1) Data:

n₁ = 0.250 mol

p₁ = 730 mmHg

p₂ = 1.15 atm

n₂ - n₁ = ?

2) Assumptions:

i) ideal gas equation: pV = nRT

ii) V and T constants.

3) Solution:

i) Since the temperature and the volume must be assumed constant, you can simplify the ideal gas equation into:

pV = nRT ⇒ p/n = RT/V ⇒ p/n = constant.

ii) Then p₁ / n₁ = p₂ / n₂

⇒ n₂ = p₂ n₁ / p₁

iii) n₂ = 1.15atm × 760 mmHg/atm × 0.250 mol / 730mmHg = 0.299 mol

iv) n₂ - n₁ = 0.299 mol - 0.250 mol = 0.049 mol

7 0

2 years ago

The diagram below shows waves A and B in the same medium

cluponka [151]

Answer:

2) twice the amplitude and half the wavelength

Explanation:

3 0

2 years ago

EXTREME HELP!!!!

mrs_skeptik [129]

the anwser is c is always the best anwser

8 0

2 years ago

Pls help me I don’t get it :(

Ksju [112]

Answer:

2nd and 4th

Explanation:

4 0

2 years ago

A light-rail commuter train accelerates at a rate of 1.35 m/s. D A 33% Part (a) How long does it take to reach its top speed of

Dennis_Churaev [7]

Answer:

a) 17.49 seconds

b) 13.12 seconds

c) 2.99 m/s²

Explanation:

a) Acceleration = a = 1.35 m/s²

Final velocity = v = 85 km/h = $85\frac{1000}{3600}=23.61\ m/s$

Initial velocity = u = 0

Equation of motion

$v=u+at\\\Rightarrow 23.61=0+1.35t\\\Rightarrow t=\frac{23.61}{1.35}=17.49\ s$

Time taken to accelerate to top speed is 17.49 seconds.

b) Acceleration = a = -1.8 m/s²

Initial velocity = u = 23.61\ m/s

Final velocity = v = 0

$v=u+at\\\Rightarrow 0=23.61-1.8t\\\Rightarrow t=\frac{23.61}{1.8}=13.12\ s$

Time taken to stop the train from top speed is 13.12 seconds

c) Initial velocity = u = 23.61 m/s

Time taken = t = 7.9 s

Final velocity = v = 0

$v=u+at\\\Rightarrow 0=23.61+a7.9\\\Rightarrow a=\frac{-23.61}{7.9}=-2.99\ m/s^2$

Emergency acceleration is 2.99 m/s² (magnitude)

6 0

2 years ago