Hello everyone I am lomard ' from Georgia. How are you?

If the fundamental frequency of a violin string is 440 HzHz, what is the frequency of the second harmonic?

tino4ka555 [31]

Answer:

880Hz

Explanation:

A violin string is an example of an open pipe. An open pipe is open at both ends.

The fundamental frequency is the first harmonic.In an open pipe the second harmonic is twice the fundamental frequency.

Hence, second harmonic = 2Fo

Fo=440Hz

Second harmonic = 2*440Hz

Second harmonic = 880Hz

7 0

2 years ago

How does a proper warm up affect blood flow

ioda

It speeds blood flow. The heart beats faster, it is beating blood faster.

6 0

2 years ago

One airplane is approaching an airport from the north at 181 kn/hr. A second airplane approaches from the east at 278 km/hr. Fin

umka2103 [35]

Answer:

The value is $\frac{dR}{dt} = -286.2 \ km/hr$

Explanation:

From the question we are told that

The speed of the airplane from the north is $\frac{dN}{dt} = -181 \ km /hr$

The negative sign is because the direction is towards the south

The speed of the airplane from the east is $\frac{dE}{dt} = -278 \ km/hr$

The negative sign is because the direction is towards the west

The distance of the southbound plane from the airport is $N = 30 \ km$

The distance of the westbound plane is $E = 15 \ km$

Generally the distance between the plane is mathematically represented using Pythagoras theorem as

$R^2 = N^2 + E^2$

Next differentiate implicitly this equation to obtain the rate at which the distance between the planes changes

So

$2R\frac{dR}{dt} = 2N \frac{dN}{dt} + 2E\frac{dE}{dt}$

Here

$R = \sqrt{N^2 + E^2}$

=> $R = \sqrt{30^2 + 15^2}$

=> $R =33.54 \ m$

$2(33.54) * \frac{dR}{dt} = 2( 30)*(-181) + 2*15*(-278)$

=> $67.08 * \frac{dR}{dt} = -19200$

=> $\frac{dR}{dt} = -286.2 \ km/hr$

4 0

3 years ago

If you have lifted 10 pounds 2 feet, you have done ___ foot-pounds of work.

nasty-shy [4]

Work = Force x distance
(10 pounds)(2 feet)
Work = 20 foot-pounds of work

hope this helps :)

8 0

2 years ago

The frequency of violet light is 7.5x10 to the 14th power hertz. What is the wavelength?

Verizon [17]

Wavelength times frequency = speed of light
7.5E14 x wavelength = 300,000 m/s

Wavelength in meters = 300,000 divided by 7.5E14

8 0

2 years ago

Hello everyone I am lomard ' from Georgia. How are you?​

Hello everyone I am lomard ' from Georgia. How are you?