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Alborosie
3 years ago
5

The angular speed of the hour hand of a clock, in rad/min, is:___________

Physics
1 answer:
lapo4ka [179]3 years ago
4 0

The angular speed is defined as:

<h2>                                      ω=\frac{2\pi}{T}</h2>

        where

                                     T=12*60=720min

                                     \omega=\frac{2\pi}{720}

                                     \omega=4.4**10^{-3} rad/min

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GalinKa [24]

Answer:N=0

Explanation:

Given

m_1=9.6 kg

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8 0
3 years ago
Mercury is the 80th position in the periodic table how many protons does it have
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Marc attaches a falling 500-kg object with a rope through a pulley to a paddle wheel shaft. He places the system in a well-insul
Klio2033 [76]

Answer:

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c = Specific heat of water at 20°C = 4186 J/kg°C

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The potential energy and heat will balance each other

PE=Q\\\Rightarrowmc m_ogh=m_oc\Delta T\\\Rightarrow \Delta T=\frac{m_ogh}{m_oc}\\\Rightarrow \Delta T=\frac{500\times 9.8\times 100}{25\times 4186}\\\Rightarrow \Delta=4.68227\ ^{\circ}C

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5 0
3 years ago
A disk is uniformly accelerated from rest with angular acceleration α. The magnitude of the linear acceleration of a point on th
solniwko [45]

Answer:

a = R\alpha\sqrt{1 + \alpha^2t^4}

Explanation:

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1) tangential acceleration which is given as

a_t = R\alpha

2) Centripetal acceleration

a_c = \omega^2 R

here we know that

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now we know that net linear acceleration is given as

a = \sqrt{a_c^2 + a_t^2}

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a = \sqrt{R^2\alpha^2 + R^2(\alpha t)^4}

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Answer:

1071823.104 Meters

Explanation:

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