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3 years ago

Which of the following paths correctly displays the transfer of energy for sound?

Physics

2 answers:

galben [10]3 years ago

8 0

Energy source to detection to medium

makvit [3.9K]3 years ago

5 0

Answer:

the energy source, the transfer of energy through a medium,

Explanation:

The three parts of sound consist of the energy source, the transfer of energy through a medium, and the detection of the sound.

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Three identical balls are thrown from the same height off a tall building. They are all thrown with the same speed, but in diffe

koban [17]

Answer:

three balls have the same speed

Explanation:

In a parabolic motion we have that

$v_{x}=v_{0}cos\alpha\\v_{y}=-gt+v_{0}sin\alpha\\v=\sqrt{v_{x}^{2}+v_{y}^{2}}\\$

but the time just before the balls hit the ground is

$t=\frac{2v_{0}sin\alpha}{g}$

Hence we have

ball A

$v=\sqrt{v_{0}^{2}cos^{2}(0)+(-g\frac{2v_{0}sin(0)}{g}+v_{0}sin(0))^{2}}\\v=\sqrt{v_{0}^{2}}=v_{0}$

ball B

$v=\sqrt{v_{0}^{2}cos^{2}(45)+(-g\frac{2v_{0}sin(45)}{g}+v_{0}sin(45))^{2}}\\v=\sqrt{v_{0}^{2}(\frac{\sqrt{2}}{2})^{2}+v_{0}^{2}(\frac{\sqrt{2}}{2})^{2}}\\v=\sqrt{v_{0}^{2}}=v_{0}$

ball C

$v=\sqrt{v_{0}^{2}cos^{2}(-45)+(-g\frac{2v_{0}sin(-45)}{g}+v_{0}sin(-45))^{2}}\\v=\sqrt{v_{0}^{2}(\frac{\sqrt{2}}{2})^{2}+v_{0}^{2}(\frac{\sqrt{2}}{2})^{2}}\\v=\sqrt{v_{0}^{2}}=v_{0}$

Hence, all three balls have the same speed just before hit the groug

vA=vB=vC

I hope this is useful for you

regards

5 0

3 years ago

3. ¿Cuál es la distancia focal de un espejo CONVERo sabiendo que un objeto colocado

lions [1.4K]

i dont know for real

8 0

3 years ago

How are electrons represented in orbitals?

Alexxx [7]

Electrons move in atomic orbitals (or subshells). there are four different orbital shapes (s p d f). in each shell, the s subshell is at a lower energy than the p. an orbital diagram is used to determine an atom's electron configurations

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3 years ago

Which type of wave can only be transmitted through matter?

Doss [256]

I only doing this for points, but i think its c

8 0

3 years ago

Read 2 more answers

True or false? a physical change is a change of matter from one form to another without a change in chemical properties

Lina20 [59]

The answer is true!!!

6 0

3 years ago