3 years ago

Describe an experiment that can be used to determine the resistance of a metallic conductor

Physics

1 answer:

raketka [301]3 years ago

7 0

Answer:

resistance of the metal conductor at different temperature

Explanation:

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How much heat is absorbed by a 47g iron skillet when its temperature rises from 12oC to 20oC?

jolli1 [7]

Answer

169.2 J

Explanation

Given in the question,

mass of iron = 47g

specific heat capacity of iron = 0.450 (J/g 0C)

initial temperature = 12° C

final temperature = 20° C

The energy q needed to increase an object of mass m and specific heat capacity c by a temperature θ is given by:

q = mcΔt

q = 47(0.45)(20-12)

q = 169.2 J

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4 years ago

What is the speed of an electron traveling 32 cm in 2 ns?

abruzzese [7]

Answer:

Speed, $v=1.6\times 10^8\ m/s$

Explanation:

Given that,

Distance covered by the electron, d = 32 cm = 0.32 m

Time, t = 2 ns

We need to find the speed of an electron. Speed is equal to distance covered divided by time. So,

$v=\dfrac{0.32}{2\times 10^{-9}}\\\\v=1.6\times 10^8\ m/s$

So, the speed of the electron is $1.6\times 10^8\ m/s$ .

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3 years ago

Carbon forms four ionic bonds in its compounds. t or f

Stells [14]

False, Carbon usually forms four covalent bonds.

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4 years ago

QUESTION 2

Mariana [72]

Question 2: Protons
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In order to do work on an object, the force you exert must be

Vedmedyk [2.9K]

The force must be made over a distance

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3 years ago