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Firdavs [7]
3 years ago
12

A person throws a tennis ball 6 m/s straight up. How long does it take for it to come back to their hand?

Physics
1 answer:
Alja [10]3 years ago
7 0
(t) = 2t = 1.22 sec. I believe ...
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A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surfac
Sedbober [7]

Answer:

v = 1.2 m/s

Explanation:

The wavelength of the waves is given as the horizontal distance between the crests:

λ = wavelength = 5.5 m

Now, the time period is given as the time taken by boat to move from the highest point again to the highest point. So it will be equal to twice the time taken by the boat to travel from highest to the lowest point:

T = Time Period = 2(2.3 s) = 4.6 s

Now, the speed of the wave is given as:

v = f\lambda

where,

v= speed of wave = ?

f = frequency of wave = \frac{1}{T} = \frac{1}{4.6\ s} = 0.217\ Hz

Therefore,

v = (0.217\ Hz)(5.5\ m)\\

<u>v = 1.2 m/s</u>

5 0
2 years ago
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VikaD [51]

Answer:

stryo:  1

wood: 1

ice: 1

brick: 2

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Explanation:

d= mass/ total volume

(fyi: for aluminum, they did the subtraction wrong to find the total volume. it is actually 5 or 5.00)

6 0
3 years ago
A concave mirror has a radius of curvature of 0.60 meter.
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Nếu tăng khoảng cách giữa hai điểm lên 4 lần thì lực tương tác tĩnh điện giữa chúng sẽ
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Answer:

điện giữa chúng s

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8 0
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In order to create a charged object, you need to ________.
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In order to create a charged object you need to transfer electrons either away or to the object by induction, conduction, or friction

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Conduction is with contact(like the previous answer, wore touching transfers the charge from a source to the object)
Friction(rubbing a balloon on wool)

7 0
2 years ago
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