2 years ago

Using up resources at a rate in which they can be replaced is called:

Physics

1 answer:

mash [69]2 years ago

7 0

Answer:

D it think

Explanation:

Not 100% sure .. Plzz don't feel offended if wrong

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Two microwave signals of nearly equal wavelengths can generate a beat frequency if both are directed onto the same microwave det

alekssr [168]

Answer:

1.5106 cm

Explanation:

The beat frequency is equal to the absolute value of the difference between the frequencies of the two signals:

$f_B = |f_1 - f_2|$

using the wave equation, we can re-write each frequency as

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

where c is the speed of light and $\lambda$ is the wavelength. Therefore,

$f_B = |\frac{c}{\lambda_1}-\frac{c}{\lambda_2}|$

where:

$f_B = 140 MHz = 140\cdot 10^6 Hz$ is the beat frequency

$\lambda_1 = 1.50 cm = 0.015 m$ is the wavelength of the first generator

$\lambda_2$ is the wavelength of the second generator

We also know that the second generator emits the longer wavelength, so we already know that the term inside the module is positive. Therefore, we can now solve for $\lambda_2$ :

$f_B = c(\frac{1}{\lambda_1}-\frac{1}{\lambda_2})\\\lambda_2=(\frac{1}{\lambda_1}-\frac{f_B}{c})^{-1}=(\frac{1}{0.015}-\frac{140\cdot 10^6}{3\cdot 10^8})^{-1}=0.015106 m = 1.5106 cm$

4 0

2 years ago

94 points if you hurry The phase of matter with the least kinetic energy:

OlgaM077 [116]

Answer:

solid

Explanation:

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2 years ago

A student observes a shadow move across the sun during a solar eclipse. Which list represents the position of Earth, the sun, an

Liono4ka [1.6K]

It goes sun moon earth the moon is blocking us from seeing the sun.

3 0

3 years ago

List the four outer planets from smallest to largest. WILL MARK BRAINLIEST! ASAP

dusya [7]

Answer: Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, and Jupiter.

Explanation:

That's all of the planets if you need them. Hope this helps!

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2 years ago

A boy on rollerskates is travelling along at 8 m/s. He has a mass of 60 kg and is carrying his

Brrunno [24]

Answer:

6m/s

Explanation:

the original momentum = mass x velocity = 8x (60+10) = 560

momentum after = mass x velocity of the school bag + mass x velocity of the boy = 10x20 + 60x A

200+60A = 560

A=6

5 0

2 years ago