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zloy xaker [14]
3 years ago
13

Sasha sits on a horse on a carousel 3.5 m from the center of the circle. She makes a revolution once every 8.2 seconds. What is

Sasha’s tangential speed?
-0.9 m/s
-1.3 m/s
-2.7 m/s
Physics
1 answer:
Leokris [45]3 years ago
6 0

Answer: 2.7 m/s

Explanation:

Given the following :

Period (T) = 8.2 seconds

Radius = 3.5 m

The tangential speed is given as:

V = Radius × ω

ω = angular speed = (2 × pi) / T

ω = (2 × 22/7) / 8.2

ω = 6.2857142 / 8.2

ω = 0.7665505

Therefore, tangential speed (V) equals;

r × ω

3.5 × 0.7665505 = 2.6829268 m/s

2.7 m/s

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Answer:

the energy  food has is transformed into mechanical energy during exercise,

Explanation:

When a person is exercising, the energy accumulated in food is transformed into mechanical energy, in general if he is running in kinetic energy and if he is rising and falling in potential energy.

In this case the energy  food has is transformed into mechanical energy during exercise,

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3 years ago
What causes an electric current in a wire?
Rina8888 [55]
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A hiker, caught in a rainstorm might absorb 1 liter of water in her clothing. if it is windy so that this amount of water is eva
NeTakaya

Water evaporates at 100⁰C

So change in temperature = 100-20 = 80⁰C

Amount of water to be evaporated = 1 liter = 1L*1kg/liter = 1 kg

Specific heat of water is 1 calorie/gram ⁰C = 4.186 joule/gram =4186 J/kg

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4 0
3 years ago
A(n) 93 kg clock initially at rest on a horizontal floor requires a(n) 610 N horizontal force to set it in motion. After the clo
denpristay [2]

Answer:0.669

Explanation:

Given

mass of clock 93 kg

Initial force required to move it 610 N

After clock sets in motion it requires a force of 514 N to keep moving it with a constant velocity

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thus 613 force is required to overcome static friction

\mu _smg=610

\mu _s\times 93\times 9.8=610

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5 0
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Density of water is 1000kg/m3. Find out the amount of mass of 5m3 water​
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Answer:

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4 0
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