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3 years ago

Which of the following is an example of a physical change? burning paper digesting food o ripping paper

1 answer:

4 0

Ripping paper, because you are changing the physical appearance. The other answer choices are an example of chemical change.

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You hear three beats per second when two sounds tones are generated. The frequency of one tone is known to be 610 Hz. The freque

tiny-mole [99]

The frequency of the other wave is 613 Hz or 607 Hz.

The difference between the frequencies of two waves is called the beat frequency.

Here, one wave has a frequency 610 Hz and the beat frequency is 3 beats per second.

Which has a higher frequency is not mentioned. Therefore, there are two possibilities.

Δf = | 610 - 613 | = 3

Δf = | 610 - 607 | = 3

Therefore, the frequency of the other wave is 613 Hz or 607 Hz.

Learn more about beat frequency here:

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2 years ago

Assume that the mass has been moving along its circular path for some time. You start timing its motion with a stopwatch when it

lesya692 [45]

Answer:

$v = R\omega(-sin\omega t \hat i + cos\omega t \hat j)$

Explanation:

As we know that the mass is revolving with constant angular speed in the circle of radius R

So we will have

$\theta = \omega t$

now the position vector at a given time is

$r = Rcos\theta \hat i + R sin\theta \hat j$

now the linear velocity is given as

$v = \frac{dr}{dt}$

$v = (-R sin\theta \hat i + R cos\theta \hat j)\frac{d\theta}{dt}$

$v = R\omega(-sin\omega t \hat i + cos\omega t \hat j)$

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3 years ago

Why do mass numbers have a trailing decimal? use the following words describe for credit isotopes protons neutrons electrons in

Dmitry_Shevchenko [17]

Answer:a number without a decimal are generally not significant. Isotopes are atoms of same element which have the same atomic number but different number of neutrons. Isotopes of elements are represented in the following way: In an atom, the number of protons is equal to its atomic number.. An atom of an element is neutral in nature so atom contains the same number of protons and electrons.

Explanation:

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4 years ago

What is the general pattern of the planetary distances from the sun

eimsori [14]

Answer:

The Titius–Bode law (sometimes termed just Bode's law) is a hypothesis that the bodies in some orbital systems, including the Sun's, orbit at semi-major axes in a function of planetary sequence. The formula suggests that, extending outward, each planet would be approximately twice as far from the Sun as the one before.

Explanation:

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4 years ago

You are conducting an experiment inside an elevator that can move in a vertical shaft. A load is hung vertically from the ceilin

mote1985 [20]

Hi there is the one you used in my house in a while away and it looks great on my phone but I hash

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3 years ago

Which of the following is an example of a physical change? burning paper digesting food o ripping paper​

Which of the following is an example of a physical change? burning paper digesting food o ripping paper