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3 years ago

Which one of the following indicates a drop in temperature?

1 answer:

6 0

Answer: <span>D. A bimetallic strip bends so that the steel is on the outside curve
</span>
When something has an increased temperature, its volume will expand. Then, if the temperature drops, its volume should be smaller. From there option A and B are out since the liquid in thermometer is expand or move up.

When you put two kinds of different metal with a different coefficient of thermal expansion, the outer curve metal will be the one with lesser coefficient when temperature drop. Since the question about drop in temperature then the metal should be bend
Brass will expand 1.5 times more than the steel so the outer curve would be the steel.

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2 years ago

Read 2 more answers

Fellow student of mathematical bent tells you that the wave function of a traveling wave on a thin rope is y(x,t)= 2.20 mm cos[(

bezimeni [28]

Answer

given,

y(x,t)= 2.20 mm cos[( 7.02 rad/m )x+( 743 rad/s )t]

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comparing the given equation from the general wave equation

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now on comparing

a) Amplitude = 2.20 mm

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f = 118.25 Hz

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$\lambda= \dfrac{2\pi}{k}$

$\lambda= \dfrac{2\pi}{7.02}$

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d) speed

$v = \dfrac{\omega}{k}$

$v = \dfrac{743}{7.02}$

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e) direction of the motion will be in negative x-direction

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3 years ago

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3 years ago

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Answer:

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