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ICE Princess25 [194]
3 years ago
14

A person paddles down river at an average speed of 4km

Physics
2 answers:
adoni [48]3 years ago
7 0

Nice paddling.  Thanks for sharing.
Do you have some question to ask ?

almond37 [142]3 years ago
7 0
Is that a question or are you just telling us
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Monochromatic light falling on two very narrow slits 0.048mm apart. Successive fringes on a screen 5.00m away are 6.5cm apart ne
tino4ka555 [31]

Answer:

λ = 5.85 x 10⁻⁷ m = 585 nm

f = 5.13 x 10¹⁴ Hz

Explanation:

We will use Young's Double Slit Experiment's Formula here:

Y = \frac{\lambda L}{d}\\\\\lambda = \frac{Yd}{L}

where,

λ = wavelength = ?

Y = Fringe Spacing = 6.5 cm = 0.065 m

d = slit separation = 0.048 mm = 4.8 x 10⁻⁵ m

L = screen distance = 5 m

Therefore,

\lambda = \frac{(0.065\ m)(4.8\ x\ 10^{-5}\ m)}{5\ m}

<u>λ = 5.85 x 10⁻⁷ m = 585 nm</u>

Now, the frequency can be given as:

f = \frac{c}{\lambda}

where,

f = frequency = ?

c = speed of light = 3 x 10⁸ m/s

Therefore,

f = \frac{3\ x\ 10^8\ m/s}{5.85\ x\ 10^{-7}\ m}\\\\

<u>f = 5.13 x 10¹⁴ Hz</u>

5 0
3 years ago
A student collects data on spring and neap tides, in feet, on four different days of the same year in Anchorage, Alaska. The gra
BabaBlast [244]

Answer:

September 9 and 24 represent spring tides due to the added gravitational pull of the Sun.

Explanation:

Just trust me

6 0
4 years ago
Students create a standing wave
kenny6666 [7]

wavelength =wavevelocity

--——————

Frequency

Frequency = 1/T => 1 / 6.73 = 0.1486

Wave velocity = L/T => 3.75 / 6.73 = 0.5572

Therefore, wave length = 0.5572/0.1486 = 3.75m

3 0
3 years ago
4. Which of the following would be a good reference point to describe the motion of a dog?
saul85 [17]

ANOTHER RUNNING DOG

Explanation:

In the given question it is to find a suitable reference point to describe  the motion of dog. Here I could suggest that it is better to compare the dog with  another running dog to create the relative speed difference to get a reliable motion variation.

Because the motion of dog is in the linear with respect to the another dog and to the acceleration produced by the dog in the required interval is easy to calculate with respect to  another dog which is already in motion.

Hence, I suggest that Motion of dog can be analysed better by analyse the motion variation of dog with  another dog running.

4 0
3 years ago
What are the standard units of displacement?
Grace [21]
The answer is meters....I think??
7 0
3 years ago
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