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4 years ago

Match the following words with their definitions.

Physics

2 answers:

Brrunno [24]4 years ago

7 0

Answer:

1. Doppler Effect = The apparent change in frequency perceived when the source of sound is approaching or moving away from an observer

2. Beats = The vibration of an object at its natural frequency, caused by a force or wave of the same frequency

3. Resonance = a series of alternating reinforcements and cancellations produced by the interference of waves

4. Shockwave = The cone-shaped wave made by a particle moving faster than the speed of a wave in that medium

Explanation:

I hope this helps. :)

victus00 [196]4 years ago

7 0

Answer:

1. Doppler effect - the apparent change in frequency perceived when the source of sound is approaching or moving away from an observer.

2. Beats- a series of alternating reinforcements and cancellations produced by the interference of waves.

3. Resonance - the vibration of an object at its natural frequency, caused by a force or wave of the same frequency

4. Shock wave - the cone-shaped wave made by a particle moving faster than the speed of a wave in that medium

Explanation:

1. Doppler effect refers to the apparent change in the frequency of the source when there is relative motion between the source and the listener. The apparent frequency is greater than source when source and listener approach each other. It is less when source and listener move away from each other.

2. Beats are produced when two slightly different frequency waves interfere. alternate constructive interference and destructive interference produces loud and soft sound.

3. Resonance is the increase in the amplitude of wave when the object vibrates at its natural frequency when it is exposed to a periodic force having frequency very close to the natural un-damped frequency.

4. Shock wave is produced when a body travels at speed greater than the speed of sound in that medium. cone-shaped wave is formed.

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For your senior project, you are designing a Geiger tube for detecting radiation in the nuclear physics laboratory. This instrum

Paha777 [63]

Answer:

Maximum linear charge density = 84.14 nC/m

Explanation:

Looking at this question, The electric field of a line charge of infinite length is given by : Er = (1/(2πεo)) x (λ/r)

r = the distance from the center of the line of charge

λ = the linear charge density of the wire.

Now looking at the equatiom, due to the fact that Er varies inveresely with r, its maximum value will occur at the surface of the wire where r = R, the radius of the wire:

And so, Emax = (1/(2πεo)) x (λ/R)

Let's make λ the subject of the equation and we get;

λ = 2πεo(REmax)

From the question, R = 0.55/2 = 0.275cm

Also, Emax = 5.50 × 10^(6) N/C

Let's take the value of the electric constant to be εo = 8.854 x 10^(-9) C^(2) / Nm^2

R = 0.275mm = 0.000275m

Plugging these values into the equation, we get;

λ = 2π x 8.854 x 10^(-12) x 0.000275 x 5.50 × 10^(6) = 84.14 nC/m

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3 years ago

A 16 kg object cuts 4 km in 25 minutes, find the applied force on the object?

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Answer:

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Explanation:

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Answer: The observing friend will the swimmer moving at a speed of 0.25 m/s.

Explanation:

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Note that this speed is the magnitude of the velocity which is a vector quantity.

The direction of the swimmer is upstream.

Hence the resultant velocity is given as, $S_{R}$ = S — S 0 $S_{0}$

$S_{R}$ = 1.25 — 1

$S_{R}$ = 0.25 m/s.

Therefore, the observing friend will see the swimmer moving at a speed of 0.25 m/s due to resistance produced by the current of the river.

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3 years ago

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Answer:

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