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Soloha48 [4]
3 years ago
10

Which of the following would add more resistance? Check all that apply.

Physics
1 answer:
Blababa [14]3 years ago
4 0

Answer:C. E.

Explanation:

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Answer:

B

Explanation:

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The equation of a transverse wave traveling along a string is 1 1 y (2.00 mm)sin[(20 m )x (600 s )t] − − = − Find the (a) amplit
Lelu [443]

Answer:

a)Amplitude ,A = 2 mm

b)f=95.49 Hz

c)V=  30 m/s  ( + x direction )

d)  λ = 0.31 m

e)Umax= 1.2 m/s

Explanation:

Given that

y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

As we know that standard form of wave equation given as

y=A sin(\phi -\omega t)

A= Amplitude

ω=Frequency (rad /s)

t=Time

Φ = Phase difference

y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

So from above equation we can say that

Amplitude ,A = 2 mm

Frequency ,ω= 600 rad/s                     (2πf=ω)

ω= 2πf

f= ω /2π

f= 300/π = 95.49 Hz

K= 20 rad/m

So velocity,V

V= ω /K

V= 600 /20 = 30 m/s  ( + x direction )

V = f λ

30 = 95.49 x  λ

 λ = 0.31 m

We know that speed is the rate of displacement

U=\dfrac{dy}{dt}

U=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

U=1200\ cos[(20m^{-1})x-(600s^{-1})t]\ mm/s

The maximum velocity

Umax = 1200 mm/s

Umax= 1.2 m/s

8 0
3 years ago
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The force of friction caused by a moving fluid is called drag.  When that fluid is air, it's also known as air resistance.

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The instantaneous velocity of an object is the blank of the object with a blank
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Instantaneous velocity is the velocity at a specific instant in time. I bet you are taking Honors Physics. 
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3 years ago
Please help on this one? The mass on the spring in this diagram is in harmonic motion between x = -5cm and x=5cm
shutvik [7]

c ... max speed zero accel

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