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shtirl [24]
3 years ago
8

An unstable nucleus results from too many or too few A) electrons. B) neutrons. C) protons. D) radons.

Physics
1 answer:
BartSMP [9]3 years ago
6 0

B is most likely to fall apart.  Please Mark Brainliest!

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A mass hanging from a spring undergoes vertical simple harmonic motion.1) Where in the motion is the velocity equal to zero?At t
tamaranim1 [39]

Answer:

At the highest point and at the lowest point the velocity of the mass hung on a spring = 0

Explanation:

Simple Harmonic Motion ( S.H.M) : Simple harmonic motion can be defined as a type of motion were a body vibrates or moves to and fro along a straight line under the influence of a force, so that the acceleration of the body towards a fixed point (equilibrium position) is proportional to its distance or displacement from that point. Examples of  bodies undergoing simple harmonic motion are

<em>⇒ The motion of a mass hung on a spring.</em>

<em>⇒ The motion of a simple pendulum</em>

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Motion of a mass hung on a spring:When a mass is hung to one end spring and other end is firmly clamped to a rigid support.(i)When the mass is in motion, (ii)it pulled down to its lowest point, passes through it equilibrium position (iii) goes to its highest point.

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<em>(2) At the equilibrium point or unstretched position the velocity is maximum</em>

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3 years ago
Graphs help you see..
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A wheel that was initially spinning is accelerated at a constant angular acceleration of 5.0 rad/s^2. After 8.0 s, the wheel is
notka56 [123]

Answer:

a)  Initial angular speed = 30 rad/s

b) Final angular speed = 70 rad/s        

Explanation:

a) We have equation of motion s = ut + 0.5at²

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             400 = u x 8 + 0.5 x 5 x 8²

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   Initial angular speed = 30 rad/s

b) We have equation of motion v = u + at

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              a = 5 rad/s²  

    Substituting

             v = 30 + 5 x 8 = 70 rad/s    

   Final angular speed = 70 rad/s        

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