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3 years ago

The strongest ernergy wave in the EM Spectrum is 'microwave' true false

Physics

1 answer:

Ratling [72]3 years ago

6 0

Pretty sure it’s false....................

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Explain the purpose of oxidation numbers?

morpeh [17]

It’s important to know if an atom loses or gains electrons when combining with other atoms to form compounds

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3 years ago

What are the dark spots and light areas on the moon called

Tems11 [23]

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4 years ago

A physical circuit refers to the transmission characteristics of the connection, such as the speed at which data is being sent t

Morgarella [4.7K]

Answer:

No, a physical circuit is just a path connecting point and switches. It cannot be related to the transmission characteristics. It's the logical circuit which can be refers to the transmission characteristics of connection such as speed of data etc. So the answer is false.

Explanation:

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3 years ago

A street light is at the top of a 19 foot tall pole. A woman 5.25 feet tall walks towards the pole with a speed of 7ft/sec along

bezimeni [28]

Answer:

The tip of her shadow is moving at the speed of 9.66 ft/sec

Explanation:

The height of the street light = 19 feet

The height of the woman = 5.25 feet

Distance between the woman and the base of the pole, x = 35 ft

The speed of the woman towards the pole, dx/dt = 7ft/sec

The distance from the base of the streetlight to the tip of the woman's shadow = y

The distance from the woman to the tip of her shadow = y - x

The diagram illustrating this description is shown below

Using similar triangle:

$\begin{gathered} \frac{19}{5.25}=\text{ }\frac{y}{y-x} \\ 19(y-x)\text{ = 5.25y} \\ 19y-19x\text{ = 5.25y} \\ 19y-5.25y\text{ = 19x} \\ 13.75y\text{ = 19x} \\ y\text{ = }\frac{19}{13.75}x \\ y\text{ = }1.38x \end{gathered}$

Find the derivative of both sides with respect to time, t

$\begin{gathered} \frac{dy}{dt}=\text{ 1.38}\frac{dx}{dt} \\ \frac{dy}{dt}=\text{ 1.38(7)} \\ \frac{dy}{dt}\text{ = }9.66\text{ ft/sec} \end{gathered}$

The tip of her shadow is moving at the speed of 9.66 ft/sec

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1 year ago

A home gets its water from the public supply. Which of the following would be the best way for the homeowner to obtain a water-q

diamong [38]

The correct option is C.
Since the home gets its water from public supply, the best place to get the water quality report is from the local water treatment facility who processed the water. Water quality report is a document which summarizes information about the water sources that are used, detected contaminants, compliance observed, etc.

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4 years ago

Read 2 more answers