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Rudiy27
3 years ago
14

7) Sound waves travel with a nominal speed of 340m/s.

Physics
1 answer:
Savatey [412]3 years ago
4 0

Answer:

The wavelengths of C1 is 10.4m, A6 is 0.193m and B7 is 0.0861m

Explanation:

Using the formula V = f×λ . Then substitute the following values into the formula:

a) v=340m/s

f=32.7 Hz

λ=V ÷ f

= 340 ÷ 32.7

= 10.4m (3s.f)

b) λ=340 ÷ 1760

= 0.193m (3s.f)

c) λ=340÷3951.1

= 0.0861m (3s.f)

(Correct me if I am wrong)

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Four toy racecars are racing along a circular race track. The cars start at the 3-o'clock position and travel CCW along the trac
xeze [42]

Answer:

in t seconds, Car A sweep out t radian { i.e θ = t radian }

Explanation:

Given the data in the question;

4 toy racecars are racing along a circular race track.

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Car A is constantly 2 feet from the center of the race track and moves at a constant speed

so maximum distance from the center = 2 ft

The angle Car A sweeps out increases at a constant rate of 1 radian per second.

Rate of change of angle = dθ/dt = 1

Now,

since dθ/dt = 1

Hence θ = t + C

where C is the constant of integration

so at t = 0, θ = 0, the value of C will be 0.

Hence, θ = t radian

Therefore, in t seconds, Car A sweep out t radian { i.e θ = t radian }

6 0
3 years ago
a 2.00 kg friction-less block is attached to an ideal spring with force constant 315 N/m.Initially, the spring is neither stretc
Setler [38]

Answer

given,

mass of block, m = 2 Kg

spring constant, k = 315 N/m

speed of the block, v = 12 m/s

a) Amplitude of the motion

   A = v \sqrt{\dfrac{k}{m}}

   A =\dfrac{12}{\sqrt{\dfrac{315}{2}}}

         A = 0.956 m

b) maximum acceleration of the block

    a_{max}= A \dfrac{k}{m}

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c) maximum Force

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5 0
3 years ago
What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 sec?
MariettaO [177]

It doesn't matter what the velocity is, or for how long.
They could both be anything.

"Constant velocity" means <em>zero</em> acceleration.


8 0
4 years ago
You buy a 75 watt light bulb. the label means that
alukav5142 [94]
The label means that the bulb will consume 75 joules of electrical energy in 1 sec
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4 years ago
Which would best be explained using Newton's Third Law?
Maksim231197 [3]

A)a gun moves backward while firing a bullet.

Explanation:

A gun moving backward while firing a bullet is a good example of newton's third law in action.

Newton's third law of motion states that "Action and reaction forces are equal and opposite in direction".

In shooting a gun, the bullet pulls forward by the action of the recoil down the barrel. This is the action force. The backward pull of the gun is the reactive force.

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

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