1) A piano tuner is testing a wire currently under 2000 N tension. The wire is 1.5 m long and has a mass of 20 g. If the tuner's computer can detect a maximum frequency of 10,000 Hz, what is the highest harmonic number the computer can detect (1 point)
A) 77
B) 100
C) 25
D) 63
2) A wave is traveling with a speed of 400 m/s and it has a wavelength of 28 m. What will the frequency of the wave be if the wavelength is doubled but the speed remains the same? (1 point)
A) 9.09 Hz
B) 14.3 Hz
C) 21.7 Hz
D) 7.14 Hz
3) If a standing wave is vibrating in it's third harmonic, how many nodes does it have? (1 point)
A) 4
B) 3
C) 2
D) 1
4) An organ pipe, which is a pipe closed at one end, is 2.46 m long and the speed of sound in air in that pipe is 345 m/s. What is the frequency of the fundamental harmonic in this pipe? (1 point)
A) 44.9 Hz
B) 20.6 Hz
C) 35.1 Hz
D) 13.2 Hz
5) Using the same organ pipe from question 11, how many possible harmonics are there in the normal human hearing range of 20 Hz to 20,000 Hz? (1 point)
A) 570
B) 985
C) 101
D) 47
6) A standing wave is set up on a violin string to produce a note of A sharp Contra (58 Hz). The violin string is 32 cm long. If the sound is produced in the fundamental frequency, what is the speed of the wave moving across the string? (1 point)
A) 52.78 m/s
B) 18.83 m/s
C) 20.01 m/s
D) 37.12 m/s

The well adaptability of dodo's in living on the island of Mauritius is the factor that would not have led to dodo's extinction.

Given is to find the factor would not have led to the extinction of dodo birds.

Therefore, the well adaptability of dodo's in living on the island of Mauritius is the factor that would not have led to dodo's extinction.

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I think neon because it is all the way to the right

The vector that goes from (0,0) to (1,-3) can be found by subtracting the initial point (0,0) from the terminal point (1,-3). So, the vector that goes from (0,0) to (1,-3) is (1, -3).

The vector that goes from (0,0) to (1,-3) can be obtained by subtracting the initial point (0,0) from the final point (1,-3). The x-component of the vector is the difference in x-coordinates: 1 - 0 = 1.

The y-component of the vector is the difference in y-coordinates: -3 - 0 = -3.

Therefore, the vector that goes from (0,0) to (1,-3) is represented as (1, -3) in the form of (x-component, y-component). Visually, the vector (1, -3) points from the origin (0,0) in the positive x-direction (to the right) by a distance of 1 unit and in the negative y-direction (downward) by a distance of 3 units.

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The correct answer is A

The distance between Star 2 and Star 3 is 75 light years.

The distance between stars in space can vary significantly. In our Milky Way galaxy, stars are typically separated by many light-years, with the closest star system, Alpha Centauri, about 4.37 light-years away from our solar system. However, interstellar distances can range from fractions of a light-year to many thousands of light-years, depending on the specific stars and their locations within the galaxy or the universe.

The distance between Star 2 and Star 3 can be calculated by subtracting the time it takes for light to travel from Star 1 to Star 2 (63 years) from the time it takes for light to travel from Star 1 to Star 3 (138 years). So, the distance between Star 2 and Star 3 is 75 light years (option A).

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Given data:

From Figure:  

        Each box in the graph (small rectangle box) is assumed to be one download. So, in the graph the time between 8 p.m to 9 p.m, the number of downloads are 8.75 approximately (because the last box is incomplete, therefore 8 complete boxes and 9th is more than half).

So, We conclude that the total number of downloads are approximately 9 in the time span of 8 p.m. to 9 p.m.

The Sentences Nyah should use in her Explanation are :

B. An Ecosystem cannot Function without Decomposers.

D. Decomposers help to recycle nutrients in an Ecosystem.

Because :

✿ Producers provide food for Consumers.

✿ Ecosystems have many types of Decomposers like Bacteria & Fungi.

✿ Plants are not Examples of Decomposers.

Final answer:

Decomposers like fungi and bacteria are crucial for ecosystem functionality as they recycle nutrients, enabling the survival and stability of ecosystems. They prevent waste buildup and support the cycle of life by converting dead matter into essential nutrients for producers.

Explanation:

Nyah explains to Arman the importance of decomposers in an ecosystem. The sentences that should be used in her explanation are:

B.) An ecosystem cannot function without decomposers.

D.) Decomposers help to recycle nutrients in an ecosystem.

Decomposers, such as fungi and bacteria, play a critical role in sustaining ecosystems by breaking down dead organisms and organic waste. This process recycles essential nutrients like carbon and nitrogen back into the soil, which are then available for producers, such as plants, to use. By converting dead matter into nutrients, decomposers ensure the stability and survival of ecosystems, preventing waste accumulation and enabling the continuous cycle of life.

D. Femur, sacrum, pelvis and skull

Answer:

Binary

Explanation:

When two compounds are made from specifically only of two elements, that compound is known as binary. Binary compounds can be of two types

1. where two elements are different and only one atom of each element would participate in compound making. some of the examples are:- sodium chloride(one sodium and one chlorine).

2. Where more than one atom of each element participate such as nitrous oxide(two atoms of nitrogen and one of oxygen).

Hello!

There is actually no 4th law. There is only 3. The gravitational law is not considered the 4th law.

Hope this helps! Have a lovely day! ~Pooch ♥

According to Ohm's law for a portion of the circuit we have:

U=RI=>I=U/R=9/4=2.25 A

Answer:

Current in the circuit, I = 2.25 A

Explanation:

Given that,

Voltage of the battery, V = 9 V

Resistance of the bulb, R = 4 ohms

We need to find the current in the circuit. It can be calculated using Ohm's law. Ohm's law gives the relationship between the current, resistance and the voltage as :

[tex]V=IR[/tex]

[tex]I=\dfrac{V}{R}[/tex]

[tex]I=\dfrac{9\ V}{4\ \Omega}[/tex]

I = 2.25 A

So, the current flowing in the circuit is 2.25 amperes. Hence, this is the required solution.

d = distance the bowling ball has fallen = ?

g = acceleration due to gravity acting on the ball by earth = 9.8 m/s²

t = time of fall for the ball = 3.0 s

distance the ball has fallen is given as

d = (0.5) g t²

inserting the above values in the equation above

d = (0.5) (9.8 m/s²) (3.0 s)²

d = (0.5) (9.8 m/s²) (9.0 s²)

d = (4.9 m/s²) (9.0 s²)

d = 44.1 m

hence the distance fallen by the ball comes out to be 44.1 m

A force is calculated in neutons

Answer: newton

Explanation:

If you write down the formula for friction, you will get an answer.

Ff = u * N               Where N is a push down force that an object experiences.

                              u (mu) is a constant and has no units

It may not be accelerating and still experience friction. A is not correct.

Color and Density will not affect the frictional force. B is not so.

Buoyant forces are a different thing altogether. Generally friction has nothing to do with them. C is incorrect.

The last one is your answer. Technically mg should be the answer and not mass, but the second part is correct.

Provided the dots represent time-lapse snapshots of an object's motion from left to right, then

(a) The underlying object is slowing down because the distance between adjacent snapshots (dots) decreases with time

(the answer is intentionally reworded to avoid sounding nonsensical)

The answer is B or A im pretty sure its B thou

D isd your answer  buddy

It is to some sea creatures. Like the ones with air filled areas like lungs and swim bladders

The correct answer is false. Just took the test

Answer:

empty space

Explanation:

Fission and fusion process

the first part is physical

Answer:

2.0 J

Explanation:

Since the surface is frictionless, we can solve the problem by using the work-energy theorem, which states that the work done on the toy is equal to the kinetic energy gained by the toy:

[tex]W=\Delta E_k[/tex]

where

W is the work done on the toy

[tex]\Delta E_k[/tex] is the kinetic energy gained by the toy

The work done can be calculated as the product between the force applied on the toy and its displacement, so:

[tex]W=Fd=(2.0 N)(1.0 m)=2.0 J[/tex]

Therefore, according to the work-energy theorem, the toy has gained 2.0 J of kinetic energy.

Answer: 2 J

Explanation: Kinetic energy is possessed by a body due to virtue of its motion. A body gains kinetic energy when some work is done on it.

W = Δ K.E.

We know that work is said to be done on a body when a force causes displacement of the body.

W = F.s

It is given that net force on the toy, F = 2.0 N which displaces the toy by, s = 1.0 m.

Hence, work done on the toy, W = 2.0 N × 1.0 m = 2 J which is equal to the kinetic energy gained by the toy.  

The measurement consists in comparing a selected pattern with the object or phenomenon whose physical magnitude is going to be measured, to find out how many times the pattern is contained in that magnitude. That is, it is about identifying or quantifying a particular characteristic or aspect of a particular object or construct.

Now, a well done measurement has two parts:

-The number gives us information about the quantity of the measurement, or in other words, the magnitude of the measurement and its precision.  

-The units gives us information about the property that is being measured. This is quite important, because a measurement or result with no units is useless.

Note the units may be expressed with letter or symbols, depending on what we are measuring.

A measurement consists of two important parts: a number and a unit. The number provides the quantity, and the unit indicates the standard of measure.

The two parts of a measurement are a number and a unit. For example, if you measure the length of a desk and find it to be 150 cm, '150' is the number, and 'cm' or centimeters is the unit.

The number tells you 'how much', and the unit tells you 'of what'. '150 centimeters' means 150 times the defined length of a centimeter.

Each part is necessary for the measurement to make sense and be useful. Without the number, you wouldn't know 'how much', and without the unit, you wouldn't know 'of what'.

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Sound level at distance of 15 m is given as 20 dB

so intensity at this distance is given as

[tex]L = 10 Log\frac{I}{I_0}[/tex]

[tex]20 = 10 Log{I}{10^{-12}}[/tex]

[tex]I_1 = 10^{-10}W/m^2[/tex]

now if we move closer to some some distance the sound level is now 50 dB

now the intensity is given as

[tex]L = 10 Log\frac{I}{I_0}[/tex]

[tex]50 = 10Log\frac{I}{10^{-12}}[/tex]

[tex]I_2 = 10^{-7}W/m^2[/tex]

now we know that

[tex]\frac{I_1}{I_2} = \frac{r_2^2}{r_1^2}[/tex]

[tex]\frac{10^{-10}}{10^{-7}} = \frac{r_2^2}{15^2}[/tex]

[tex]r_2 = 47 cm[/tex]

so now the distance from friend must be 47 cm

Answer:

12,740 N

Explanation:

The weight of the hyppogriff is given by:

[tex]W=mg[/tex]

where

m = 1300 kg is the hippogriff's mass

g = 9.8 m/s^2 is the acceleration due to gravity

Substituting the numbers into the equation, we get:

[tex]W=mg=(1300 kg)(9.8 m/s^2)=12,740 N[/tex]

The answer is 12,740  i just did test

i think the answer is true

Using the kinematic equation ;

vf²=vi²+2ad just rearrange for d;

vf²-vi²=2ad;

(vf²-vi²)/2a=d

Now plug the numbers in.

vf=24.2

vi=0

a=9.81=g

(24.2²-0²)/(2*9.81)=29.8 m.

Ways of thinking, feeling, or acting that are unusual are symptoms of a mental disorder.

Answer: Option (D) is the correct answer.

Explanation:

When a person thinks, feels or acts in ways which are not normal or which are unusual in many ways then this activity is considered as symptoms of a person's behavior.

For example, a women argues with everyone without any reason.

So, when a person suffers from some any mental disorder then he doesn't know what he is saying, doing or expressing.

Hence, we can conclude that ways of thinking, feeling, or acting that are unusual are symptoms of a mental disorder.

We have that Crest ,trough, frequency, wavelength, amplitude you will be able to label the wave in Question.

From the question we are told

Label the parts of a wave the terms : crest ,trough, frequency, wavelength, amplitude

Generally

This is the defined as the vertical distance covered by a wave.

This speaks of lowest point of a wave the inverse of the crest

This is the is defined as the inverse of

This is defined as the peak to peak distance of a wave

This defines the maximum height attained by the wave.

Therefore

With above definition of Crest ,trough, frequency, wavelength, amplitude you will be able to label the graph in Question

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Answer:

The given statement is true

Explanation:

Injuries are the ones that cut skin, tissues. Injuries include cuts, scratches, scrapes and punctured skin and worst case is fatal.

Normally injury is caused by external force, includes damages done to the body.

Definitely injuries can be prevented if rules are followed, protective equipments are used.  Also in each sport, risks of injuries if known measures can be taken to prevent the injuries

The given statement is true

Injuries can be preventable if you follow the rules, use protective equipment is a true statement.

This is defined as harm to the body and is usually associated with pain, bleeding etc.

This can be avoided when performing sports through using protective equipment and risks involved in the sport.

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heat being supplied might do

Answer: the number protons stayed the same.

Explanation: an isotope has equal number of protons but different number of neutrons resulting in different atomic mass but the same chemical properties.