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2 years ago

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A piece of a metal alloy with a mass of 114 g was placed into a graduated cylinder that contained 25.0 mL of water, raising the

water level to 42.5 mL. What is the density of the metal?

1 answer:

Minchanka [31]2 years ago

8 0

Answer:

6.51 g/c.c

Explanation:

mass, m = 114 g

initial volume, V1 = 25 mL

final volume, V2 = 42.5 mL

Volume of the metal piece, V = V2 - V1 = 42.5 - 25 = 17.5 mL

1 mL = 1 c.c

So, Volume of metal, V = 17.5 c.c.

Let the density of the metal is d.

density = mass / volume

d = 114 / 17.5 = 6.51 g/c.c

Thus, the density of metal is 6.51 g/c.c.

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Answer:

$5.45\times 10^{-4}$ W

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2 years ago

A water wave traveling in a straight line on a lake is described by the equation:y(x,t)=(2.75cm)cos(0.410rad/cm x+6.20rad/s t)Wh

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Answer:

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The time it takes for one complete wave pattern to go past a fisherman is period.

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The velocity of the wave crest is the derivative of the position with respect to time.

$v(x,t) = \frac{dy(x,t)}{dt} = -(6.2\times 0.0275)\sin(0.0041x + 6.2t)$

The maximum velocity can be found by setting the derivative of the velocity to zero.

$\frac{dv_y(x,t)}{dt} = -(6.2)^2(0.0275)\cos(0.0041*1.53\times 10^3 + 6.2t) = 0$

In order this to be zero, cosine term must be equal to zero.

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$KE= \frac{1}{2} mv^2$

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faust18 [17]

Below are the choices that can be found in the other sources:

A. diffraction
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<span>D. transmission
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2 years ago

To measure moderately low pressures, oil with a density of 9.0 x 102 kg/m3 is used in place of mercury in a barometer. A change

Yuki888 [10]

Answer:

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