3 years ago

I need to know the answer and explanation if possible !

Physics

1 answer:

Gwar [14]3 years ago

5 0

Answer:

a baseball bat hits a ball

Explanation:

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What is the approximate energy required to raise the temperature of 1.00 L of hydrogen by 90 °C? The pressure is held constant a

Oliga [24]

Answer:

Q = 116.8 J

Explanation:

Here given that the temperature of 1 L hydrogen is increased by 90 degree C at constant pressure condition.

So here we will have

$Q = n C_p \Delta T$

here we know that

n = number of moles

$n = \frac{1}{22.4}$

$n = 0.0446$

for ideal diatomic gas molar specific heat capacity at constant pressure is given as

$C_p = \frac{7}{2}R$

now we have

$Q = (0.0446)(\frac{7}{2}R)(90)$

$Q = 116.8 J$

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3 years ago

Calculate the terminal velocity of

adell [148]

I’m pretty sure it’s a

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3 years ago

Can you think of a device or machine that transfers the motion of a hot gas to motion of an object?

tino4ka555 [31]

Answer:

Turbines in coal factories

Explanation:

Turbines in coal factories use steam power to move the turbine flaps and generate static electricity as energy output.

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3 years ago

A system consists of electrons and protons only. It contains 150 electrons and has a total charge of +22e. What is the mass of t

siniylev [52]

Answer:

Mass of system will be $288.605\times 10^{-28}kg$

Explanation:

We have given a system consist 150 electrons

Mass of one electron $m_{e}=9.1\times 10^{-31}kg$

So mass of 150 electron $=150\times 9.1\times 10^{-31}=1365\times 10^{-31}=1.365\times 10^{-28}kg$

Charge on system is +22e

So number of proton = 150 +22 = 172

Mass of one proton $=1.67\times 10^{-27}kg$

So mass of 172 proton $=172\times 1.67\times 10^{-27}=287.24\times 10^{-27}=287.24\times 10^{-28}kg$

So total mass on the system $=287.24\times 10^{-28}+1.365\times 10^{-28}=288.605\times 10^{-28}kg$

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3 years ago

An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39

julia-pushkina [17]

Answer: Half life is 588.96 days

Anf It will take 659.81 days for a 100 mg sample to decay to 46 mg.

Explanation:

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3 years ago