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timama [110]
3 years ago
10

Light refracts when traveling from air into glass because light

Physics
1 answer:
kirill [66]3 years ago
4 0

Answer:

the last one

Explanation:

ii took the quiz and it was right... i think

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A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745
Elena L [17]

w = instantaneous angular speed = 1.25 rad/s

r = radius = 4.65 m

α = angular acceleration = 0.745 rad/s²

centripetal acceleration is given as

a_{c} = rw²

a_{c} = (4.65 ) (1.25)² = 7.27 m/s²

tangential acceleration is given as

a_{t} = rα

a_{t} =4.65 x 0.745 = 3.46 m/s²

angle is given as

\theta = tan^{-1}(\frac{a_{c}}{a_{t}})

\theta = tan^{-1}(\frac{7.27}{3.46})

\theta = 64.5 deg

5 0
4 years ago
The y-axis of a position-time graph represents__________.
Sladkaya [172]

Answer:position relative to the starting point

Explanation:

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3 years ago
The simple act of walking requires single leg
OlgaM077 [116]

you are so wise how do you do it?

4 0
3 years ago
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Jlenok [28]
The Answer is:

O 3s

Hope you got it right.
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3 years ago
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Which of the following items can enter and exit an isolated system?
Mkey [24]

Neither energy nor matter can enter and exit an isolated system.

Explanation:

There are three types of systems which refers to universe. They are

1. Open System : In an open system, both energy and matter have external interactions. Example:- boiling water in an open pan.

2. Closed system : In a closed system, only energy has interaction with surroundings.  Example:- boiling water with a lid on the pan.

3. Isolated system : In an isolated system, neither energy-nor matter has external interactions with surroundings. Example : a thermos flask does not exchange energy and matter.

Hence, the correct option is (a) " neither energy nor matter ".

7 0
4 years ago
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