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3 years ago

How does a resistor affect the speed of the current that passes through it?

Physics

2 answers:

Maksim231197 [3]3 years ago

8 0

A resistor DECREASES the speed of current as a resistors job is to resist the flow of electrons

bija089 [108]3 years ago

5 0

The resistance is nothing but the obstruction posed to the current flowing through it. as the resistance increases, the amount of obstruction increases and makes the current to flow more slowly through the resistor. hence increase in the value of resistance results in decrease in the speed of the current.

The speed of the current decreases.

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About 0.1 eV is required to break a "hydrogen bond" in a protein molecule. Calculate the minimum frequency and maximum wavelengt

Verdich [7]

Answer:

$2.41\cdot 10^{13}Hz, 1.24\cdot 10^{-5}m$

Explanation:

The energy of the photon must be equal to 0.1 eV, so let's convert this value into Joules first:

$E=0.1 eV \cdot 1.6\cdot 10^{-19} J=1.6\cdot 10^{-20}J$

The energy of the photon is related to its frequency by

$E=hf$

where h is the Planck constant and f is the frequency. Substituting,

$f=\frac{E}{h}=\frac{1.6\cdot 10^{-20}J}{6.63\cdot 10^{-34}Js}=2.41\cdot 10^{13}Hz$

And now we can find the wavelength of the photon, which is given by

$\lambda=\frac{c}{f}$

where c is the speed of light. Substituting,

$\lambda=\frac{3\cdot 10^8 m/s}{2.41\cdot 10^{13} Hz}=1.24\cdot 10^{-5}m$

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3 years ago

Daria was swimming in a friend’s pool yesterday, when she saw that a fly had landed in the water about 5 feet away from her. She

jasenka [17]

Answer:

Daria probably suffers from Entomophobia.

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3 years ago

An endangered species is a species that has died out and no individuals are left. True or false

valentinak56 [21]

Answer:

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3 years ago

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Minchanka [31]

Answer:

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3 years ago

a stone is thrown vertically upwards with a velocity of 20 m per second what will be its velocity when it reaches a height of 10

TEA [102]

Answer:

Explanation:

Here's the info we have:

initial velocity is 20 m/s;

final velocity is our unknown;

displacement is -10.2 m; and

acceleration due to gravity is -9.8 m/s/s. Using the one-dimensional equation

v² = v₀² + 2aΔx and filling in accordingly to solve for v:

$v=\sqrt{(20)^2+2(-9.8)(-10.2)}$ Rounding to the correct number of sig fig's to simplify:

$v=\sqrt{400+2.0*10^2}$ to get

v = $\sqrt{600}=20\frac{m}{s}$ If you don't round like that, the velocity could be 24, or it could also be 24.5 depending on how your class is paying attention to sig figs or if you are at all.

So either 20 m/s or 24 m/s

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3 years ago