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Mariana [72]
3 years ago
10

A dog sitting at the edge of the pool notices that 5 waves pass in fromt of his paws over a span of 1.72 seconds. He watches one

wave in particular and notices that it goes from one end to other other 13 m in 13.54 seconds. What is the length of each wave?
Physics
2 answers:
gayaneshka [121]3 years ago
8 0
I think it si 20.3 second hope it helps
Fantom [35]3 years ago
6 0
20.3 sec so ye good luck I hope I helped you
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Anna Litical analyzes the force between a planet and its moon, varying the mass of
Travka [436]

Answer:

Trial 1 is the largest, trial 3 is the smallest

Explanation:

Given:

<em>Trial 1</em>

M₁ = 6·10²² kg

d₁ = 3 500 km = 3.5·10⁶ м

<em>Trial  2</em>

M₂ = 6·10²² kg

d₂ = 7 000 km = 7·10⁶ м

<em>Trial  3</em>

M₃ = 3·10²² kg

d₃ = 7 000 km = 7·10⁶ м

___________

F - ?

Gravitational force:

F₁ = G·m·M₁ / d₁² = m·6.67·10⁻¹¹·6·10²² / (3.5·10⁶)² = 0.37·m  (N)

F₂ = G·m·M₂ / d₂² = m·6.67·10⁻¹¹·6·10²² / (7·10⁶)² = 0.08·m  (N)

F₃ = G·m·M₃ / d₃² = m·6.67·10⁻¹¹·3·10²² / (7·10⁶)² = 0.04·m  (N)

Trial 1 is the largest, trial 3 is the smallest

5 0
1 year ago
4. ________ have a positive charge
xz_007 [3.2K]

A proton has positive charge of 1, that is, equal but opposite to the charge of an electron. A neutron, like the name implies, is neutral with no net charge. The charge is believed to be from the charge of the quarks that make up the nucleons (protons and neutrons).

8 0
3 years ago
Some headpieces also employ noise reduction technology to eliminate sounds not coming from the earpieces of the stethoscope. How
sweet [91]

Answer:

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

Explanation:

First, let us understand what interference is. Interference is the phenomenon that occurs when two waves superpose to form a wave which has a different wavelength, frequency, amplitude than the original two waves. When the crest of one wave superposes with the other waves crest then this results in the amplitude increasing. This is known as constructive interference. When the crest of one wave superposes with the other waves trough then this results in the amplitude decreasing. This known as destructive interference.

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

8 0
3 years ago
What is the purpose of a rear view mirror in a car?
Nat2105 [25]
The purpose of a rear view mirror in a car is to see behind the car, if there is any car coning or not.
3 0
3 years ago
6. When can you say that an object is accelerating?
tia_tia [17]

Answer:

When the speed is changing is the correct answer

Explanation:

Because acceleration is rate of change of velocity

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8 0
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