4 years ago

Which of the follwoing best summarizes the wave mechanical model of atoms?

1 answer:

4 0

<span>Electrons display some properties of waves and while they reside outside of the nucleus, their positions cannot be known with certainty. </span>

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What is electromagnetic<br>waves

Elis [28]

Answer:

waves that are created as a result of vibrations between an electric field and a magnetic field

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3 years ago

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An eagle flies from its perch in a tree to the ground to capture and eat its prey. describe its energy transfromation

ddd [48]

10% energy is transferred from the prey to eagle and 90% energy is lost in the enviorment .

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3 years ago

500 J of work are done in 4 seconds to lift a 40 kg box to the top of a high shelf. How much power was required to complete the

Artemon [7]

Answer:

125 W

Explanation:

Power = work / time

P = 500 J / 4 s

P = 125 W

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3 years ago

If a box has a length of 10.0 cm, a width of 20.0 cm, and a height of 5.00 cm, then what is its volume in m^3?

lesya692 [45]

Explanation:

Solution,

Given:-

Length=10 cm
Width= 20 cm
Height= 5 cm
Volume =?

Now,

By using the formula of volume of a cuboid, we have

volume=length×width×height
volume=10 cm×20 cm×5 cm
volume=1000 cm³
volume= 1×10×10×10×10 cm³
volume=(1×10⁴) cm³

Hence, last option is the correct answer.

6 0

3 years ago

Brain surgery. Surgeons can remove brain tumors by using a cavitron ultrasonic surgical aspirator, which produces sound waves of

dmitriy555 [2]

Answer: $\lambda =1.304\times 10^4\ m$

Explanation:

Given

frequency of wave $\nu =23\ kHz$

We know velocity is given by

$v=\nu \times \lambda$

where $\lambda$ =wavelength

$\lambda =\frac{velocity}{\nu }$

$\lambda =\frac{3\times 10^8}{23\times 10^3}$

$\lambda =1.304\times 10^4\ m$

7 0

4 years ago