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2 years ago

Convert the temperature 288 K to degrees Celsius

2 answers:

6 0

Answer: 14.85°C

Justification:

1) To convert Kelvin temperature tu Celsius temperature you subtract 273.15

2) This is the formula.

°C = K - 273.15

3) The conversion of 288 K to degrees Celsius is:

°C = 288 - 273.15 = 14.85 K

Kelvin temperature is called absolute temperature. The lower bound of the absolute temperature is 0 K., that means absolute zero and it is physically impossible to reach.

At 0 K or absolute temperature the atoms would stop vibrating meining that the entropy of the substance reaches it's minimum value, i.e. 0

Zero K is equivalent to - 273.15°C

Bumek [7]2 years ago

6 0

i dont know how to convert it but you can use goolge to transfer it

288 kelvin = 14.85 celsius

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Answer:

v = 2.029 m/s

Explanation:

Given

L = 84.0 cm ⇒ R = 0.5*L = 0.5*84 cm = 42 cm = 0.42 m

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m₂ = 0.200 kg

g = 9.8 m/s²

u₁ = u₂ = 0 m/s

v₁ = ?

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Due to gravity, the bar oscillates and becomes vertical. The mass that occupies the lower position is the one with the highest torque. The one that reduces the potential energy (the system tends to the position of minimum energy). This is achieved if the mass that goes down is 0.6kg (that goes down 42cm) and the one that goes up is 0.2kg (goes up 42cm).

In this system mechanical energy is conserved, so we can match its value in the horizontal position with the one in the vertical.

then

Ei = Ki + Ui = 0.5*(m₁+m₂)*(0)² + (m₁+m₂)*9.8*(0) = 0 J

Ef = Kf + Uf

⇒ Kf = 0.5*(m₁+m₂)*v² = 0.5*(0.6+0.2)*v² = 0.4*v²

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v is the same value due to the wooden rod is pivoted about a horizontal axis through its center and the masses are on opposite ends.

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2 years ago

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Part A:
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where a is acceleration,
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Vi is initial velocity, and
t is time

Substituting,
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ANSWER: 3 m/s²

Part B:
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