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2 years ago

How does changing the wavelength alter the frequency of the wave? & How does altering frequency alter pitch?

2 answers:

4 0

For any wave, the product of (wavelength) x (frequency) is always the same number ... it's the speed of the wave. So if you were able to change the wavelength somehow, the frequency would automatically change, in the opposite direction but by the SAME FACTOR, so that their product would stay the same.

If the frequency of a sound changes (and we're close enough to listen to it), our brain interprets that as a change of pitch, in the same direction as the frequency changed.

Rufina [12.5K]2 years ago

3 0

for a given type of wave in a given medium a larger frequency means a smaller wavelength

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A bug splats against the windshield of a car traveling at high speeds down a backcountry road. Which statement correctly compare

zvonat [6]

Answer:

C. The bug's change in momentum is equal to the car's change in momentum.

Explanation:

As we know by Newton's 2nd law

$F = \frac{\Delta P}{\Delta t}$

here we have also know that when car hits the bug then force applied by wind shield on the bug is same as the force applied by the bug on the car's wind shield as per Newton's III law

$F_{12} = F_{21}$

so we know that

$\frac{\Delta P_{12}}{\Delta t} = \frac{\Delta P_{21}}{\Delta t}$

so we have

$\Delta P_{12} = \Delta P_{21}$

so correct answer will be

C. The bug's change in momentum is equal to the car's change in momentum.

6 0

3 years ago

If a cart of 2 kg mass has a force of 8 newtons exerted on it, what is its acceleration?

maria [59]

This is an example of the Newton`s Second Law:
F = m * a
a = F / m
F = 8 N, m = 2 kg.
a = 8 N : 2 kg
Answer:
a = 4 m/s²

3 0

2 years ago

Describe the difference between contact forces and field forces.

Salsk061 [2.6K]

Contact forces has to be touching for it to be an actual force. A field force does not have to be touching but it does have to be acting on particles at different positions in a space.

8 0

3 years ago

A student creates a model of a closed ecosystem by filling a glass tank half full with water then adding 10 snails and two small

GenaCL600 [577]

The reason why the snails are dead because the snails lack oxygen for it is a model of closed ecosystem. Another reason to this is that they lack abiotic factors that they need in surviving or as they live for the place that they are living lacks a lot and are not enough for them to last or survive. Lastly, the water could have not been a contributor for them to live for they may not be able to live in a water environment and could only dwell in land.

4 0

2 years ago

Read 2 more answers

How do scientist study the earth through plate tectonic plates and boundaries/

Serggg [28]

Answer:

By plotting the locations of earthquakes

Explanation:

When plotting the locations of earthquakes, scientists have been able to locate plate boundaries and also be able to determine plate characteristics and predict the movement of plates

5 0

2 years ago