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notka56 [123]
2 years ago
7

Alchemists searched for ways to change lead into gold. Which type of change

Physics
2 answers:
ipn [44]2 years ago
6 0

Answer:

It's had to be a Nuclear change since by nuclear fusion we can convert lead to Gold.

Therefore <u>Option B. Nuclear Change</u> is Answer.

By : Modern Einstein

marta [7]2 years ago
6 0
Nuclear, chemical relates to compounds and other things, physical is phase changes or mixing, nuclear is right because for lead to become cold the nucleus of the atom would have to change the amount of protons present
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How are electrons distributed in the molecular orbitals, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen m
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2 Electrons

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Which force is involved in kicking a ball?<br><br> 1. Frictional force<br><br> 2. Pushing force
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Read 2 more answers
1. Explique con sus palabras por qué el ser humano al nacer es un organismo inacabado, y que influencia ejercen en él las caract
Vlad [161]

Answer:

Todo ser humano, al nacer, es un organismo inacabado en términos tanto físicos como psicoemocionales. Es decir, el humano, al nacer, lo hace sin la posibilidad de autosustentarse en el futuro inmediato: no puede caminar, expresarse, tener pensamiento analítico ni la capacidad de resolver las problemáticas que les afectan.

Ello hace que el humano requiera para su desarrollo de un acompañamiento absoluto por parte de su madre en el período inicial de su vida, tanto para alimentarlo como para transmitirle las nociones básicas de supervivencia; y posteriormente requiera de un entorno social idóneo que le permita desarrollarse emocionalmente para poder vivir normalmente en sociedad.

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7 0
3 years ago
Car A is driving east toward an intersection. Car B has already gone through the same intersection and is heading north. At what
Kryger [21]

Answer:

76 mi/h

Explanation:

\frac{da}{dt} = Velocity of car A = 50 mi/h

a = Distance car A travels = 40 mi

\frac{db}{dt} = Velocity of car B = 60 mi/h

b = Distance car B = 30 mi

c = Distance between A and B after 3 hours = √(a²+b²) = √(40²+90²) = 50 mi

From Pythagoras theorem

a²+b² = c²

Now, differentiating with respect to time

2a\frac{da}{dt}+2b\frac{db}{dt}=2c\frac{dc}{dt}\\\Rightarrow a\frac{da}{dt}+b\frac{db}{dt}=c\frac{dc}{dt}\\\Rightarrow \frac{dc}{dt}=\frac{a\frac{da}{dt}+b\frac{db}{dt}}{c}\\\Rightarrow \frac{dc}{dt}=\frac{40\times 50+30\times 60}{50}\\\Rightarrow \frac{dc}{dt}=76\ mi/h

∴ Rate at which distance between the cars is increasing is 76 mi/h

The cars are getting farther apart at this time

8 0
4 years ago
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