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Dimas [21]
3 years ago
15

Which are strong bases? Check all that apply. HCI NaOH NH3 H2CO3 ΠΗΝΟΣ OKOH

Physics
1 answer:
Whitepunk [10]3 years ago
8 0
NaOH is a strong base. Ammonia is a weak base if im not wrong. I do not understand the last 2 notations
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Who are the people for you then I can help you format the essay

Explanation:

7 0
2 years ago
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I'm walking 1.6m/s to 7-11 and it started to rain so I sped up to 2.7m/s in 1.2
olga nikolaevna [1]

Answer:

Explanation:

a = \frac{v_f-v_0}{t} which is the final velocity minus the initial velocity in the numerator, and the change in time in the denominator.  For us:

a=\frac{2.7-1.6}{1.2} so

a = .92 m/s/s (NOT negative because you're speeding up)

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How much force does it take to bring a 1,375 N car from rest to a velocity of 26 m/s in 6 seconds?
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Explanation:

<u>Mass of car</u> = 137.5 kg

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3 years ago
Two football players are pushing a 60 kg blocking sled across the field at a constant speed of 2.0 m/s. The coefficient of kinet
MArishka [77]

Answer:

The sled slides d=0.155 meters before rest.

Explanation:

m= 60 kg

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μ= 0.3

g= 9.8 m/s²

W= m * g

W= 588 N

Fr= μ* W

Fr= 176.4 N

∑F = m * a

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Air pressure may be represented as a function of height above the surface of the Earth as shown below.. P(h) = P_0 e^-.00012h. .
Rufina [12.5K]

Answer. Second Option: .85p_o=p_o e^-.00012h


Solution:

P(h)=Po e^(-0.00012h)

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Height above the surface of the Earth (in meters): h

Air pressure at the sea level: Po

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P(h)=(85/100) Po

P(h)=0.85 Po

Replacing P(h) by 0.85 Po in the formula above:

P(h)=Po e^(-0.00012h)

0.85 Po = Po e^(-0.00012h)

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3 years ago
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