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3 years ago

15

Which of the following objects would absorb the most light?

1 answer:

RSB [31]3 years ago

7 0

A an opanque object is compared to a black T shirt

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Which statement best describes the density of the outer planets?

gavmur [86]

Answer:

Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water.

Explanation:

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4 years ago

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_________statistics are measures that summarize the characteristics of a sample

Tamiku [17]

Answer:

Explanation:

Descriptive statistics statistics are measures that summarize the characteristics of a sample.

Hope it helps

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3 years ago

An 30-turn coil has square loops measuring 0.341 m along a side and a resistance of 3.61 Ω. It is placed in a magnetic field tha

Verdich [7]

Answer:

Thus, the induced current in the coil at $t =1.73s$ is 9.98 A.

Explanation:

Faraday's law says

$\varepsilon = N \frac{d \Phi_B}{dt}$

where $N$ is the number of turns and $\Phi_B$ is the magnetic flux through the square coil:

Now,

$N = 30$

$\theta = 37.5^o$

$A = (0.341m)^2= 0.11623m^2$

$B = 1.45t^3$ ;

therefore,

$\varepsilon = N \frac{d \Phi_B}{dt} = N\frac{d ( BA\:cos(\theta))}{dt} = 30*\frac{d ( (1.45t^2)(0.1163)\:cos(37.5^o))}{dt}$

$=30*(0.1163)\:cos(37.5^o)*1.45*\dfrac{d ( t^3)}{dt} = 12.04t^2$

$\boxed{\varepsilon = 12.04t^2}$

is the emf induced in the coil.

Now, the loop is connected to $R = 3.61\Omega$ resistance; therefore, at $t = 1.73s$

$\varepsilon = RI = 12.04t^2$

$RI = 12.04(1.73)^2$

$RI = 36.03$

$I = \dfrac{36.03}{3.61\Omega }$

$\boxed{I = 9.98A }$

Thus, the current in the coil at $t =1.73s$ is 9.98 A.

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4 years ago

In what form is carbon found in the atmosphere?

svlad2 [7]

Answer:

Carbon is found in the atmosphere mostly as carbon dioxide.

Explanation:

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3 years ago

What is a wavelength and give me a sentence with that word

RoseWind [281]

<span> A wavelenght is the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
</span>The diode laser operates at a wavelength<span> of 410 nm.</span>

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3 years ago