Ask question

Ask question

All categories

Makovka662 [10]

3 years ago

15

does the wavelength of the sound increase, decrease, or stay the smae as the musician changes from the first sound to the second

sound?

2 answers:

Naya [18.7K]3 years ago

8 0

Decrease K k kk kk k k k

Zarrin [17]3 years ago

5 0

I think it stays the same, but it really depends whether you put more presure.so it can sound louder.
Hope this helps:)!
@SamSamySamantha

You might be interested in

A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm and a fulcrum (or pivot point

Nonamiya [84]

Answer:

1.52 m

Explanation:

We are given that

Maximum force=F=679 N

Mass of rock ,m=385 kg

Distance,d=0.233 m

We have to find the minimum total length L of the rod required to move the rock.

Torque on rock= $T_1=mgd=385\times 9.8\times 0.233=879.11 N$

Where $g=9.8m/s^2$

Torque on man= $T_2=Force\times distance=(L-d)\times 679=(L-0.233)\times 679$

$T_1=T_2$

$(L-0.233)\times 679=879.11$

$L-0.233=\frac{879.11}{679}=1.29$

$L=1.29+0.233=1.523\approx 1.52 m$

Hence, the minimum total length of rod=1.52 m

3 0

3 years ago

A 3 inch fire hose has a water flow of 200 gallons per minute. What is the flow in liters per second? Note: Use US gallons not U

stepladder [879]

Answer:

Case I: 12.617 L/s

Case II: 161.406 cubic meters per hour

Case III: 1.062 Pound inches

Explanation:

<u>Given:</u>

Speed of water flow = 200 gallons per minute
Speed of air blow = 95 cubic feet per minute
Measure of Torque = 12 Newton centimeter

<u>Assumptions:</u>

1 US gallon = 3.785 L
1 min = 60 s
1 ft = 0.3048 m
1 h = 60 min
1 inch = 2.54 cm
1 N = 0.2248 lb

Case I:

$Speed\ of\ water\ flow = 200 \dfrac{gallon}{min}\\\Rightarrow V_{water} = 200\times \dfrac{3.785\ L}{60\ s}\\\Rightarrow V_{water} = 12.617\ L/s$

Case II:

$Speed\ of\ air\ blow = 95 \dfrac{ft^3}{min}\\\Rightarrow V_{air} = 95\times \dfrac{(0.3048\ m)^3}{\dfrac{1}{60}\ h}\\\Rightarrow V_{air} = 95\times (0.3048)^3\times 60\ m^3/h\\\Rightarrow V_{air} = 161.406\ m^3/h$

Case III:

$Measure\ of\ torque = 12\ N cm\\\Rightarrow \tau = 12\times (0.2248\ lb)\times \dfrac{1}{2.54}\ in\\ \Rightarrow \tau = 1.062\ lb in$

6 0

3 years ago

(b) Figure 3.32 shows the orbit of a planet around the Sun. Compare the linear speed of the planet at positions X, Y and Z.

Viefleur [7K]

At Z ... slowest speed

At Y ... fastest speed

At X ... medium speed

Wherever it is in its orbit, the line from the planet to the Sun smears over the same amount of area every second.

That's Kepler's second law of planetary motion.

The reason this happens is: That's how gravity works. (A better explanation is available, but first you have to be able to twirl calculus and solid geometry in the air on long sticks.)

5 0

4 years ago

Full explanation please I’m asking kindly

-Dominant- [34]

1).

Time = (distance) / (speed)

Time = (1000 meters) / (331 m/s)

<em>Time = 3.02 seconds</em>

2).

Acceleration = (change in speed) / (time for the change)

Change in speed = (second speed) - (first speed)

Change in speed = (50 m/s) - (20 m/s) = 30 m/s

Acceleration = (30 m/s) / (5 seconds)

<em>Acceleration = 6 m/s²</em>

5 0

3 years ago

What is the relationship between power and voltage?

kipiarov [429]

<u>Answer:</u>

The power and voltage are related through Power Rule .

<u> Explanation : </u>

Power Rule states that the current I that flows the element in the circuit with a loss in voltage V, then the amount of power dissipated by that element in the circuit is the multiplicative product of voltage and the current.

Mathematically, power law is

$\boldsymbol{P}=\boldsymbol{I} \times \boldsymbol{V}$

The rate of work done or the rate of energy consumption or production is termed as power.Unit of power is denoted as W(watts).

Potential energy between any two points on a circuit is called as Voltage and is measured in volts (V) .

3 0

3 years ago