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olga nikolaevna [1]
4 years ago
7

Which matches mandeleevs prediction for the properties of eka-aluminum?

Physics
1 answer:
WITCHER [35]4 years ago
5 0
Which matches Mendeleev’s prediction for the properties of eka-aluminum?<span>A. It would be a gas at room temperature. 
B. It would be strong metal with a high density. 
C.It would be a soft metal with a low melting point.</span> Mendeleev's eka - aluminium is what we know today as gallium . <span>The definition C in the question is closest to gallium or eka - aluminium.</span>


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The answer to this is A. this is because, refraction with a light or sound wave changing its direction involve propagation,(in which propagation is the change in direction of a light or sound wave)


4 0
4 years ago
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A person using an oxygen mask is breathing air that is 33% oxygen. what is the partial pressure of the o2, when the air pressure
yawa3891 [41]
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5 0
3 years ago
A 1100 kg sports car accelerates from 0m/s to 32m/s in 10 seconds. What is the average power of the engine?
timurjin [86]

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The average power of the engine of the sports car is 56.32 kW

Explanation:

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initial velocity of the sports car, u = 0 m/s

final velocity of the sports car, v = 32 m/s

time of motion, t = 10 s

The kinetic energy of the car is given by;

K.E = ¹/₂m(v² - u²)

K.E = ¹/₂mv²

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The average power of the engine of the sports car is given by;

Pavg = Energy / time

Pavg = 563200 / 10

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