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k0ka [10]
4 years ago
13

An element's atomic number is 45. How many protons would an atom of this element have?

Physics
2 answers:
STALIN [3.7K]4 years ago
5 0
Name:<span> Rhodium </span>
Symbol:<span> Rh </span>
Atomic Number:<span> 45 </span>
Atomic Mass:<span> 102.9055 amu </span>
Melting Point:<span> 1966.0 °C (2239.15 K, 3570.8 °F) </span>
Boiling Point:<span> 3727.0 °C (4000.15 K, 6740.6 °F) </span>
Number of Protons/Electrons:<span> 45 </span>
Number of Neutrons:<span> 58 </span>
Classification: Transition Metal 
Crystal Structure:<span> Cubic </span>
Density @ 293 K:<span> 12.41 g/cm</span>3 
Color:<span> silverish</span>
kaheart [24]4 years ago
3 0
It would have 45 protons, as the atomic number is equivalent to the amount of protons
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Explanation

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As a freely falling object picks up downward speed, what happens to the power supplied by the gravitational force?
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Two train whistles, and , each have a frequency of 392 Hz. is stationary and is moving toward the right (away from ) at a speed
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Answer:

Part a)

f = 371.1 Hz

Part b)

f = 417.7 Hz

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Explanation:

Part a)

Due to doppler's Effect the frequency of the sound heard by the train which is moving away from the observer is given as

f_1 = f_0\frac{v + v_o}{v + v_s}

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Part b)

Now from the second train which is approaching the person we can say

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Part c)

As we know that beat frequency is the difference in the frequency from two sources

f_b = f_2 - f_1

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8 0
3 years ago
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