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Valentin [98]
3 years ago
9

If a sound travels 343m/s through air and has a frequency of 800Hz, what would the wavelength be of the same sound traveling thr

ough water 500m/s with the same frequency?
Physics
1 answer:
VARVARA [1.3K]3 years ago
7 0

Answer:

0.625m

Explanation:

Now Velocity of a wave ,V = frequency × wavelength

Wavelength =velocity /frequency

=500/800 =0.625m

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What potential increase vac must an electron be accelerated through if the most energetic photon it can emit will scatter off of
nikitadnepr [17]
Referring to Compton scattering 
Δλ = h/m₀c (I- cos Ф)
λ' =λ = (0,0242×10⁻¹⁰) (1- cos 60°)
λ= λ' -(0.0242 × 10⁻¹⁰) (1- cos 60°)

7.19 ˣ 10⁻¹²m

The increased potential is given by 
Vₐc = hc/eλ = 6.625 × 10 ⁻³⁴ J,s) ( 3× 10⁸ m/s ( 1.6 ˣ 10 ⁻¹⁰C)
(7.19 ˣ 10⁻¹²m)

173kV.
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3 years ago
Some trees have red leaves all year long. You know that plants with green leaves make their food for themselves. How do you thin
marshall27 [118]
The same way as the trees with green leaves. Through photosynthesis :)
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3 years ago
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What role does friction play in the conservation of enérgy?
Alja [10]

The law of conservation of energy asserts that total energy remains constant in an isolated system. That is, energy cannot be generated or destroyed, but it may be transferred from one form to another. Frictional forces can dissipate energy, which raises the question of whether it violates the law of conservation of energy. No, it does not. When there is friction, energy is transferred from one form to another. There will be no energy loss. To illustrate this issue, consider the following scenario: two buses collide. The buses are no longer moving as a result of the collision. Where does all of this energy go? The solution is simple: the friction between buses and between buses and the road allows energy to be transferred from one form to another. You may be aware that when we rub our hands together, heat is produced; what occurs here is frictional energy converting to heat energy. This is what happens in bus accidents, where the energies can be changed to thermal energy, acoustic energy, or any other type of energy owing to friction and impact. So the energy we believed we had wasted was really converted to heat and sound. Bus collisions are not only noisy, but they also cause a lot of friction on the ground and in the bent metal. Both heat and sound are types of energy.

  • NOTE:
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7 0
2 years ago
A basketball has a mass of 609 g. Moving to the right and heading downward at an angle of 32° to the vertical, it hits the floor
Vladimir [108]

Answer:

\Delta p=(0,3.10)kg*m/s\\  

Explanation:

Momentum change:

\Delta p=p_{f}-p_{o}\\   :  vector

p=mv

p_{o}=(p_{ox, p_{oy}}}=(m*v*sin(\theta),-m*v*cos(\theta) )\\   : the ball move downward with an angle theta to the vertical

p_{f}=(p_{fx, p_{fy}}}=(m*v*sin(\theta),+m*v*cos(\theta) )\\     :the ball move upward with the same angle theta to the vertical, with same speed

So:

\Delta p=p_{f}-p_{o}=(0,2m*v*cos(\theta))=(0,2*0.609*3*cos(32))=(0,3.10)kg*m/s\\  

8 0
3 years ago
Examples of electromagnetic interactions in everyday life
zlopas [31]

Answer:

Maybe when you bump into the refrigerator and the magnet falls?

Explanation:

This is an example of you interacting with electromagnetics because you must have bumped into something and made a magnet fall.

I hope it helps?

If it does help can I have a brainliest?

3 0
3 years ago
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