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lorasvet [3.4K]
3 years ago
7

Can I have help? I REALLY need it! PLEASE!

Physics
1 answer:
valentina_108 [34]3 years ago
7 0
Parallel .............
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A woman on a bicycle traveling at 10 m/s on a horizontal road stops pedaling as she starts up a hill inclined at 4.0º to the hor
IrinaK [193]
The kinetic energy K = 0.5 * m * v² must be equal to the potential energy U = m * g * h.

m mass
v velocity
h height
g = 9.81m/s²

The mass m cancels out:
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Solve for height h and transform to distance traveled.
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How can hypotheses best be tested
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3 years ago
The sound level near a noisy air conditioner is 70 dB. If two such units operate side by side, the sound level near them would b
Schach [20]

Answer:

73 db

Explanation:

A single air conditioner is equivalent to 70 dB frequency. An extra air conditioning unit would therefore double the sound frequency. It does not, however, double the decibels to 140 dB. Instead, it adds only 3 dB to the 70 dB, making the total decibels of two air conditioning units equal to 73 db

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7 0
3 years ago
Describe one situation in which forces are created>
garri49 [273]
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3 years ago
Because of the curvature of the earth, the maximum distance D that you can see from the top of a tall building of height h is es
mojhsa [17]

Answer:

 D = 9.9 10⁶ mi

Explanation:

In the exercise they give the expression for maximum viewing distance

       D = 2 r h + h²

Ask for this distance for a height of 1100 feet

Let's calculate

        D = 2 3960 1100 + 1100²

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        D = 9.92 10⁶ mi

         D = 9.9 10⁶ mi

8 0
3 years ago
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