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saul85 [17]
3 years ago
13

Sound is produced by

Physics
2 answers:
elena-14-01-66 [18.8K]3 years ago
7 0
Sound is produced when something <span>vibrates.


</span>
zavuch27 [327]3 years ago
5 0
Vibrations it's produced
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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) whi
mel-nik [20]

Answer:

Explanation:

All the displacement will be converted into vector, considering east as x axis and north as y axis.

5.3 km north

D = 5.3 j

8.3 km at 50 degree north of east

D₁= 8.3 cos 50 i + 8.3 sin 50 j.

= 5.33 i + 6.36 j

Let D₂ be the displacement which when added to D₁ gives the required displacement D

D₁ + D₂ = D

5.33 i + 6.36 j + D₂ = 5.3 j

D₂ = 5.3 j - 5.33i - 6.36j

= - 5.33i - 1.06 j

magnitude of D₂

D₂²= 5.33² + 1.06²

D₂ = 5.43 km

Angle θ

Tanθ = 1.06 / 5.33

= 0.1988

θ =11.25 ° south of due west.

4 0
3 years ago
Which element of a valid contract is established by getting the signatures of all parties?
sweet [91]

The element of a valid contract which is established by getting the signatures of all parties is <u>mutual agreement</u>

<h3>What is an element of a valid contract?</h3>

An element of a valid contract simply refers to that promise made between two or more parties that which allow the courts to make judgement.

Some elements of valid contract are:

  • Offer
  • Acceptance
  • Consideration
  • Intention to create legal relation
  • Certainty and capacity.

So therefore, the element of a valid contract which is established by getting the signatures of all parties is mutual agreement

Learn more about elements of a valid contract:

brainly.com/question/15101023

#SPJ1

8 0
2 years ago
Classify the following situations into contact and non-contact forces.
NARA [144]

Answer: Contact force

a. Applying break in a vehicle.

d. The speed of ball rolling on ground is reduced

Non contact force

b. A coconut falling from a coconut tree.

c. The planets revolving around the sun.

Explanation:

The contact force is the force which exerts when one object or entity comes in contact with other object or entity. For example, on application of break the vehicle stops, the force is applied on the breaks to stop the vehicle. The ball rolling on the ground the speed reduces so the application of force on the ground also reduces.

The non contact force is the force one object exerts on the other without coming in direct contact with the other object. The force exerted by one object on other due to gravity is a non contact force. The coconut falling on the ground and planets revolving around the sun are examples of non contact force due to gravity.

8 0
2 years ago
A flute player hears four beats per second when she compares her note to a 523 Hz tuning fork (the note C). She can match the fr
xxTIMURxx [149]

Answer:

527Hz

Explanation:

The beat frequency of any two waves is:

Fbeat =|f1 – f2|

i.e  

for frequency tied to length increase (wavelength increases as length increases, therefore frequency decrease::    Fbeat = f1+f2

for frequency tied to length decrease wavelength increases as length increases, therefore frequency also increases :    Fbeat = f1-f2

Note that a wavelength increase means a decrease of frequency because v = fλ

Therefore from the question:

Fbeat  =4 beats/s

F2 -523Hz

Fbeat = f1-f2

F1=Fbeat+F2

=523+4

=527Hz

   

6 0
3 years ago
Anyone knows what this is?
shepuryov [24]
I think it is D.) “Cycles around” but I am not positive.
5 0
3 years ago
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