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3 years ago

Stephanie is riding her bicycle to the park. The chemical energy used to pedal the bicycle is transformed into __________.

Physics

2 answers:

Jet001 [13]3 years ago

4 0

Answer:I'm gonna say mechanical or kinetic depending on how you look at it.

Explanation:

kenny6666 [7]3 years ago

3 0

Answer:

<h3> MECHANICAL ENERGY</h3>

Explanation:

when you use mechanical energy you are use kinetic energy and potential energy at the same time.

When pedaling the bike is transforming chemical energy, supplied by the breakdown of the food you eat, into mechanical energy to turn the pedals. The chemical energy is potential and the mechanical energy is kinetic

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What is the wavelength of the carrier wave of a campus radio station, broadcasting at a frequency of 97.2 MHz (million cycles pe

andrey2020 [161]

Answer:

Wavelength is 3.08 meters.

Explanation:

It is given that,

Frequency, $f=97.2\ MHz=97.2\times 10^6\ Hz$

We need to find the wavelength of the carrier wave of a campus radio station. It can be calculated by using following relation as :

$c=f\times \lambda$

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

$\lambda=\dfrac{3\times 10^8\ m/s}{97.2\times 10^6\ Hz}$

$\lambda=3.08\ m$

So, the wavelength of the carrier wave is 3.08 meters. Hence, this is the required solution.

8 0

3 years ago

A purse at radius 2.10 m and a wallet at radius 3.15 m travel in uniform circular motion on the floor of a merry-go-round as the

vlada-n [284]

Complete question is:

A purse at radius 2.10 m and a wallet at radius 3.15 m travel in uniform circular motion on the floor of a merry-go-round as the ride turns. They are on the same radial line. At one instant, the acceleration of the purse is $1.7 m/s^2 \hat i+3.20m/s^2 \hat j$ . At that instant and in unit-vector notation, what is the acceleration of the wallet?

Answer:

$a'= 2.55 m/s^2\hat i + 4.8 m/s^2 \hat j$

Explanation:

Given: Purse is at radius, $R=2.10 m$

Wallet is at radius, $R'=3.15 m$

acceleration of the purse, $a =$ $1.7 m/s^2 \hat i+3.20m/s^2 \hat j$

$a=r\omega^2$

Both the purse and wallet would have same angular velocity $\omega$ .

$\sqrt \frac{a}{R}=\sqrt \frac{a'}{R'}$

$a'=\frac{a}{R}\times R \\ \Rightarrow a' = \frac{1.7 m/s^2 \hat i+3.20m/s^2 \hat j}{2.10 m}\times 3.15 m \\ a'= 2.55 m/s^2\hat i + 4.8 m/s^2 \hat j$

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3 years ago

Your friend won the race that you were both running. Instead of being gracious, your friend made fun of you for losing, and now

nika2105 [10]

Negative peer influence

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3 years ago

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Can someone help me PLEASE I will mark Brainly and 10+ points

yanalaym [24]

#10 when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and so it floats

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3 years ago

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A flashlight bulb operating at a voltage of 4.5 V has a resistance of 8.0 W . How many electrons pass through the bulb filament

madam [21]

Answer:

1.11×10¹⁹ electrons

Explanation:

The formula for electric energy is given as,

E = QV ................. Equation 1

Where E = Electric Energy, Q = charge, V = Voltage.

Make Q the subject of the equation

Q = E/V............... Equation 2

Given: E = 8 W, V = 4.5 V.

Substitute into equation 2

Q = 8/4.5

Q = 1.778 C

using,

n = Q/e............ Equation 3

Where n = number of electron, e = Charge of one electron.

Given: e = 1.6×10⁻¹⁹ C

Substitute into equation 3

n = 1.778/1.6×10⁻¹⁹

n = 1.11×10¹⁹ electrons

7 0

3 years ago