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professor190 [17]
3 years ago
5

Compare and contrast the average kinetic energy of 0.5 L of coffee at 34ÁC,

Physics
1 answer:
Andre45 [30]3 years ago
6 0
Compared to coffee at room temperature, the molecules of the coffee at 34°C will be moving faster and colliding with one another more frequently.
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If the area of an iron rod is 10 cm by 0.5 cm and length is 35 cm. Find the value of resistance, if 11x10^-8 ohm.m be the resist
malfutka [58]

Answer:

Resistance of the iron rod, R = 0.000077 ohms    

Explanation:

It is given that,

Area of iron rod, A=10\ cm\times 0.5\ cm=5\ cm^2 = 0.0005\ m^2

Length of the rod, L = 35 cm = 0.35 m

Resistivity of Iron, \rho=11\times 10^{-8}\ \Omega-m

We need to find the resistance of the iron rod. It is given by :

R=\rho\dfrac{L}{A}

R=11\times 10^{-8}\times \dfrac{0.35\ m}{0.0005\ m^2}

R=0.000077 \Omega

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As this happens over twelve seconds, you would take the total difference in velocities and divide it by twelve to find the change per second

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What is called gravitational potential energy?
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Answer:

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Explanation:

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Answer:

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