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Bumek [7]
2 years ago
7

suppose that during any period of 1/4 second there is one instant at which the crests or troughs of component waves are exactly

in phase and maximum reinforcement occurs,how many beats will occur in 1 second(a)4(b)8(c)2(d)12
Physics
2 answers:
ivanzaharov [21]2 years ago
8 0
The correct answer for the question that is being presented above is this one: "(a)4." Suppose that during any period of 1/4 second there is one instant at which the crests or troughs of component waves are exactly in phase and maximum <span>reinforcement occurs, in 1 second, there will be 4 beats.</span>
Juli2301 [7.4K]2 years ago
6 0
<h2>Answer:</h2>

<u>The correct option is</u><u> (A) 4 beats</u>

<h2>Explanation:</h2>

When two sound waves of different frequency approach the listener, the alternating constructive and destructive interference causes the sound to be alternatively soft and loud - a phenomenon which is called "beating" or producing beats. If one beat occur in 1/4 of a second, this means that, a second is divided into four parts and one beat occur in each part. Therefore in a second, there will be four beats.

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6 0
2 years ago
Although all sports require a person to be in shape to some degree, some sports demand more from the body. Which sport does not
RSB [31]

Answer:

I  think golf does not demand high level of physical fitness. A golfer just need be skillful and able to play under pressure. In terms of physical exercise i think he/she just need to do some muscle stretches.

Explanation:

3 0
2 years ago
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Help please !
Leviafan [203]

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

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2 years ago
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Ship A is 32 miles north of ship B and is sailing due south at 16 mph. Ship B is sailing due east at 12 mph. At what rate is the
Zielflug [23.3K]

Answer:

\dfrac{dz}{dt} =-5.6\ mile/h

Explanation:

distance between ship A and B = 32 mile

Ship A velocity in south, dx/dt = -16 mph

Ship B is sailing toward east with speed, dy/st = 12 mph

time = 1 hour

rate of change of distance between them = ?

x be the distance travel after t time

X = 32 + x

Let distance between them be z

now, using Pythagoras theorem to calculate distance between ships after 1 hours

z² = x² + y²

z² = (32 + x)² + 12²

z² = (32 - 16)² + 12²

z = √400

z = 20 miles

now, calculation of rate of change of distnace

z² = (32 + x)² + y²

differentiating both side w.r.t. time

2 z \dfrac{dz}{dt} = 2(32+x)\dfrac{dx}{dt} + 2 y\dfrac{dy}{dt}

z \dfrac{dz}{dt} =(32-16)\dfrac{dx}{dt} +y\dfrac{dy}{dt}

20\times \dfrac{dz}{dt} =16\times (-16) +12\times 12

\dfrac{dz}{dt} =\dfrac{-112}{20}

\dfrac{dz}{dt} =-5.6\ mile/h

hence, the rate is the distance between them changing at the end of 1 hour is equal to \dfrac{dz}{dt} =-5.6\ mile/h

7 0
3 years ago
Suppose you walk into a sauna that has an ambient temperature of 48.0°C. (a) Calculate the rate of heat transfer in watts to you
GenaCL600 [577]

Answer:99.84 W

Explanation:

Given

Ambient temperature T_{\infty }=48^{\circ}C\approx 321\ K

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Skin emissivity \epsilon =0.98

Surface area A=1.30\ m^2

Rate of heat transfer is Q=\epsilon A\sigma (T_0^4-T^4)

Q=0.98\times 1.30\times 5.67\times 10^{-8}((321)^4-(310)^4)

Q=99.84\ W

4 0
2 years ago
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