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adelina 88 [10]
3 years ago
7

A squirrel (mass 0.9 kg) is running across the road at a speed 4.0 m/s. What is the

Physics
2 answers:
Ilya [14]3 years ago
5 0
Use the formula: Ek = 1/2mv^2

1/2(0.9) * 4^2

0.45 * 16

7.2
masya89 [10]3 years ago
3 0

Answer:

A). Option A

B). Option B

C). Option B

Explanation:

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What is the period of a wave with a frequency of 100 Hz and a wavelength of 2.0 m
spin [16.1K]

The answer for the following answer is answered below.

  • <u><em>Therefore the time period of the wave is 0.01 seconds.</em></u>
  • <u><em>Therefore the option for the answer is "B".</em></u>

Explanation:

Frequency (f):

The number of  waves that pass a fixed place in a given amount of time.

The SI unit of frequency is Hertz (Hz)

Time period (T):

The time taken for one complete cycle of vibration to pass a given point.

The SI unit of time period is seconds (s)

Given:

frequency (f) = 100 Hz

wavelength (λ) = 2.0 m

To calculate:

Time period (T)

We know;

According to the formula;

<u>f =</u>\frac{1}{T}<u></u>

Where,

f represents the frequency

T represents the time period

from the formula;

  T = \frac{1}{f}

 T = \frac{1}{100}

  T = 0.01 seconds

<u><em>Therefore the time period of the wave is 0.01 seconds.</em></u>

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2 years ago
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How many structures do prokaryotic cells have in common with the eukaryotic cells?
Feliz [49]
Two. The both have a plasma membrane and cytoplasm. 
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What two factors affect the speed of a sound wave as it travels through a medium ?​
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The material that makes up the medium such as air or water and the temperature.
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A uniform magnetic field B=5.210 T is perpendicular to the plane of the paper (into the page). The current-carrying wire of valu
ehidna [41]

Answer:5.21 N

Explanation:

Given

B=5.210 T

I=2 A

L=0.5 m

Given Wire is perpendicular to Magnetic field

\theta =90^{\circ}

F=IL\times B

F=BIL sin\theta

F=5.210\cdot 2\cdot 0.5 sin(90)

F=5.210 N

as  1 Tesla =1 N/A/m

4 0
3 years ago
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