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expeople1 [14]
3 years ago
9

An object is placed 1.0 cm from a convex mirror with a focal length of 4.0 cm.

Physics
1 answer:
Drupady [299]3 years ago
6 0

Answer:

image distanc=-0.8cm

Explanation:

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The answer is C.......
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How long does the president serve a term in office
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United States Electoral College to a four-year term, with a term limit of two terms (totaling eight years) or a maximum of ten years if the president acted as president for two years or less in a term

Explanation:

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What is the momentum of an object with a mass of 60 kg and velocity of 10 m/s?<br><br> heeelp
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Linear momentum= Mass*Velocity

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A lunar eclipse occurs only when the Moon is new. A lunar eclipse occurs only when the Moon is new. True False
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7 0
4 years ago
The tub of a washer goes into its spin-dry cy-cle, starting from rest and reaching an angularspeed of 3.1 rev/s in 10.7 s.At thi
neonofarm [45]

Answer:

35 revolutions

Explanation:

t = Time taken

\omega_f = Final angular velocity

\omega_i = Initial angular velocity

\alpha = Angular acceleration

\theta = Number of rotation

Equation of rotational motion

\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\frac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\frac{3-0}{10.7}\\\Rightarrow \alpha=0.28037\ rev/s^2

\omega_f^2-\omega_i^2=2\alpha \theta\\\Rightarrow \theta=\frac{\omega_f^2-\omega_i^2}{2\alpha}\\\Rightarrow \theta=\frac{3.1^2-0^2}{2\times 0.28037}\\\Rightarrow \theta=17.13806\ rev

Number of revolutions in the 10.7 seconds is 17.13806

\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\frac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\frac{0-3.1}{11.2}\\\Rightarrow a=-0.27678\ rev/s^2

\omega_f^2-\omega_i^2=2\alpha \theta\\\Rightarrow \theta=\frac{\omega_f^2-\omega_i^2}{2\alpha}\\\Rightarrow \theta=\frac{0^2-3.1^2}{2\times -0.27678}\\\Rightarrow \theta=17.36035\ rev

Number of revolutions in the 11.2 seconds is 17.36035

Total total number of revolutions in the 21.9 second interval is 17.13806+17.36035 = 34.49841 = 35 revolutions

3 0
4 years ago
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