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1 year ago

deidre walked her dog a distance of 95 meters to the north. the walk took 45 seconds. what was their velocity

Physics

1 answer:

dezoksy [38]1 year ago

6 0

Velocity of Deidre and her dog is 2.11m/s.

<h3>What is velocity?</h3>

Velocity is the rate of change of position of an object in a particular frame of reference
Mathematically, velocity of an object = Displacement of the object/time taken

<h3>What is velocity of Deidre and her dog ?</h3>

The distance covered by Deidre and her dog is 95 meter towards north.
The time taken to cover the distance is 45 second.
So velocity of Deidre and her dog =95/45

=2.11m/s

Thus , we can conclude that the velocity of Deidre and her dog is 2.11 m/s towards north .

Learn more about velocity here :

brainly.com/question/80295?source=archive

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A golf club hits a stationary 0.05kg golf ball with and average force of 5.0 x 10^3 newtons accelerating the ball at 44 meters p

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Answer: The magnitude of impulse imparted to the ball by the golf club is 2.2 N seconds

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3 years ago

The work done by an external force to move a -8.50 μC charge from point a to point b is 6.10×10−4 J . If the charge was started

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Answer:

-54.12 V

Explanation:

The work done by this force is equal to the difference between the final value and the initial value of the energy. Since the charge starts from the rest its initial kinetic energy is zero.

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The change in electrostatic potential energy $\Delta U$ , of one point charge q is defined as the product of the charge and the potential difference.

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4 years ago

The energy of a photon of light is __________ proportional to its frequency and __________ proportional to its wavelength.

icang [17]

Answer:

D) directly, inversely

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The energy of a photon of light is directly proportional to its frequency and inversely proportional to its wavelength.

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Mathematically, frequency is related to wavelength and velocity using;

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From the equation, we see an inverse relationship between E and wavelength and a direct one with frequency.

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3 years ago