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Oduvanchick [21]
3 years ago
9

A figure skater begins spinning counterclockwise at an angular speed of 3.2 π rad/s. During a 4.2 s interval, she slowly pulls h

er arms
inward and finally spins at 8.8 π rad/s.
What is her average angular acceleration
during this time interval?
Answer in units of rad/s^2
Physics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

4.2 rad/s²

Explanation:

Given:

ω₀ = 3.2π rad/s

ω = 8.8π rad/s

t = 4.2 s

Find: α

ω = αt + ω₀

8.8π rad/s = α (4.2 s) + 3.2π rad/s

α = 4.2 rad/s²

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An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 26.3 m
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We will use the formula / equation to determined the acceleration. 

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We will use the formula / equation to determined the acceleration.

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2 large parallel plates are 2.0 cm apart. the strength of the electric plates between them is 100.0 n/c . what is the difference
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Hello!

We can use the following equation for the potential difference between two parallel plates given an electric field and separation distance:
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Plug in the values and solve.

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2.12pa of pressure is generated on the ground as a result of the weight.

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In ideal circumstances, every 1000 feet of elevation gain results in a 1 inHg (inch of mercury) decrease in air pressure (barometer). The pressure will therefore drop to 28.92 inHg at 1000 ft MSL from 29.92 inHg at sea level (0 ft MSL) (1000 feet higher).

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