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const2013 [10]
4 years ago
5

What metal has 28 electrons?

Physics
2 answers:
Alja [10]4 years ago
8 0
Nickel has a happy amount of 28 electrons.
lesya692 [45]4 years ago
3 0
Nickel has 28 electrons
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A satellite orbits earth at constant speed in circular orbit.Which statement is correct? A The resultant force on the satellite
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Answer:

B The resultant force on the satellite is towards the Earth.

Explanation:

In the case when the satellite orbits earth would be at constant speed in the circular orbit so hee the resultant force that on the satellite would be with regard to the earth

So as per the given situation, the option B is correct

And, the rest of the options would be wrong

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3 years ago
What are the magnitudes of (a) the angular velocity, (b) the radial acceleration, and (c) the tangential acceleration of a space
KonstantinChe [14]

Answer:

(a)w=2.485*10^{-3}m/s\\(b)a=26.92m/s^2\\(c)\alpha =0rad/s^2

Explanation:

Given data

Linear speed of spaceship V=39000 km/h =10833.3 m/s

The radius of circular motion r=4360 km=4360000 m

For Part (a) angular velocity

The angular velocity is given by:

w=\frac{v_{speed}}{r_{radius}}

Substitute the given values

So

w=\frac{10833.3m/s}{4360000m} \\w=2.485*10^{-3}m/s

For Part(b) The radial acceleration of spaceship

The radial acceleration is given by:

a_{r}=w^2 r

Substitute given values and value of ω

So

a_{r}=(2.485*10^{-3}m/s)^2(4360000m)\\a_{r}=26.92m/s^2

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The spaceship is rotating with constant angular velocity,then the  tangential acceleration of spaceship is zero

So

\alpha =0rad/s^2

4 0
3 years ago
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