When a tuning fork with a frequency of 440.0 Hz is used with a resonator, the loudest sound produced occurs when the length of the closed-pipe tube is 10.50 cm long. What is the speed of sound in this case?

Answers

Answer 1

Answer:

4620

Explanation:

440.0+10.50

=4620


Related Questions

The velocity of a mass moving in a circular path is..

Answers

Constantly changing.

Which is the best example of decreasing entropy?
O A box of nails is left in the rain and the nails rust over time.
O A pile of dirt on a floor is cleaned up with a broom.
O Apuddle of water is exposed to the sun and evaporates.
O A tree in a forest grows naturally over 10 years.

Answers

Answer:

B. A pile of dirt on the floor is cleaned up with a broom.

Explanation:

An increasing entropy is something that is left to be, like the other answers. decreasing entropy is disrupted usually by a person or something living.

When the pile of dirt on a floor is cleaned up with a broom, the molecular weight of the dirt present on the floor will decrease resulting in a decreased entropy.

Entropy is the measure of the degree of disorderliness of a system. It entails the randomness of a system.

Entropy of a system increases with increase in temperature and molecular weight of the compound.Entropy can also increase when the pressure of the system is reduced.

A decrease in entropy would mean an increase in pressure, or a decrease in molecular weight or temperature.

Thus, considering the given options, only option B will result in a decreased molecular weight. When the pile of dirt on a floor is cleaned up with a broom, the molecular weight of the dirt present on the floor will decrease resulting in a decreased entropy.

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Explain how scientist learned about the magnetic poles of the Earth.

Answers

Answer:

there are many way but this may help

Explanation:

The tendency of a magnet to align itself in a north-south direction, so giving a magnetic compass, was discovered by the Chinese about 2000 years ago. Then in 1600 William Gilbert published De Magnete, in which he concluded that the earth behaved as a giant magnet. ...

an object increases its velocity from 22 m/s to 36 m/s in 5s.what is the acceleration of the object

Answers

Answer:

2.8 m/s²

Explanation:

v=v0+at <=> 36 = 22 + a×5 <=> 5a = 36-22 <=> 5a = 14 <=> a = 14/5 <=>

<=> a = 2.8 m/s²

A :-) for this question , we should apply
a = v - u by t
Given - u = 22 m/s
v = 36 m/s
t = 5 sec
Solution -
a = v - u by t
a = 36 - 22 by 5
a = 14 by 5
a = 2.8 m/s^2

.:. The acceleration is 2.8 m/s^2.

A child kicks a ball horizontally with a speed of 4.8 m/s off a deck 3.5 m off the ground. How far, in meters, from the deck does the ball land on the ground?

Answers

Answer:

2.605m

Explanation:

Using the formula for calculating Range (distance travelled in horizontal direction)

Range R = U√2H/g

U is the speed = 4.8m/s

H is the maximum height = ?

g is the acc due to gravity = 9.8m/s²

R = 3.5m

Substitute into the formula and get H

3.5 = 4.8√2H/9.8

3.5/4.8 = √2H/9.8

0.7292 = √2H/9.8

square both sides

0.7292² = 2H/9.8

2H = 0.7292² * 9.8

2H = 5.21

H = 5.21/2

H = 2.605m

Hence the height of the ball from the ground is 2.605m

A boy is exerting a force of 70 N at a 50-degree angle on a lawnmower. He is accelerating at 1.8 m/s2. Round the answers to the nearest whole number.

What is the mass of the lawnmower?
What is the normal force exerted on the lawnmower?

Answers

The lawnmower accelerates in the positive horizontal direction, so that the net horizontal force is, by Newton's second law,

(70 N) cos(-50°) = m (1.8 m/s²)

where m is the mass of the lawnmower. Solve for m :

m = ((70 N) cos(-50°)) / (1.8 m/s²)

m ≈ 25 kg

The lawnmower presumably doesn't get lifted off the ground, so that the net vertical force is 0. If n is the magnitude of the normal force, then by Newton's second law,

n - m g + (70 N) sin(-50°) = 0

n = m g + (70 N) sin(50°)

n = (25 kg) (9.8 m/s²) + (70 N) sin(50°)

n ≈ 300 N

Which is an example of negative acceleration?

Answers

A graph that starts from the top left decreasing to the bottom right

What happens to the current in a circuit if a 100
resistor is removed and replaced by a 200resistor?

Answers

Answer:

current decrease to half

The current in a circuit if a 100 resistor is removed and replaced by a 200 resistor current decrease to half.

What is resistor?

A resistor is a passive two-terminal electrical component used in circuits to implement electrical resistance. Resistor use in electronic circuits includes lowering current flow, adjusting signal levels, dividing voltages, biasing active devices, and terminating transmission lines.

When potential is constant than current is inversely  proportional to resistance if we increase the resistance current will be half.

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When convection occurs in the atmosphere:
A.
Warm air sinks and cool air rises.

B.
Warm air rises and cool air sinks.

C.
Warm air and cool air sinks.

D.
Warm air and cool air rises. MARK BRAINLEST HELP!

Answers

Answer:

The answer is B.

Explanation:

As the Earth's surface warms from the sun, for instance, the air above it warms and rises. If the circumstances permit, this air may continue to climb while cooling and generating cumulus clouds. Thus, option B is correct.

What role of convection in atmosphere?

Convection currents are created in the troposphere by surface heating. Convection currents are produced as the Earth's surface warms from the Sun's rays and the air near it rises as a result of heat absorption.

The effect of differential heating is convection currents. Warm, lighter (less dense), and rising matter rises while cool, heavier (more dense), falling matter falls. Convection currents are the circulation patterns that are produced by this movement in the Earth's atmosphere, oceans, and mantle.

Therefore, The air cools, gets denser, and sinks back toward the surface as it ascends in the troposphere.

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3. What is the best way to help with
mining problem in the future?

Answers

Answer:

1) Mining companies have an impressive track record for delivering continuous improvements in safety and risk governance standards. We have no doubt that the professionalism and expertise present within the industry will ensure that any new and emerging risk challenges are dealt with in an equally determined fashion.

2) Insurers have recognized the approach and achievements of mining companies in identifying, mitigating and retaining their risks. Many mining companies have close and longstanding relationships with their insurers built through regular dialogue with mining company executives and visits to mining sites and processing facilities.

3) This document should be of value to any organization involved in this ever-evolving industry.

4) The very nature of mining natural resources means that many businesses will have operations in some of the most remote and inhospitable areas in the world and very often coupled with a high susceptibility to natural catastrophe.

5) In addition to the traditional risk factors, the mining industry now faces an even wider range of challenges. Factors such as climate change, new technologies, economic uncertainties and secure supply of key consumables like electricity, water, gas and other fuels are all difficult to predict and bring additional complications to securing appropriate balance sheet protection.

POSSIBLE POINTS: 12.5
A 35 kg object is on the surface of Venus. Venus has a mass of 4.87x10^24 kg and a radius of 6.05x10^6 m. What is the mass of the object on Earth?
O 35 kg
O 35N
0 343 N
O 343 kg

Answers

Answer:

35 kg

Explanation:

Given that,

Mass, [tex]m_1=35\ kg[/tex]

Mass of Venus, [tex]m_2=4.87\times 10^{24}[/tex]

Radius of Venus, [tex]r=6.05\times 10^{6}\ m[/tex]

We need to find the mass of the object on Earth.

Mass of an object is the amount of matter contained in it. It remains constant at every location. Here, the mass of the object is 35 kg on the Earth. It means its weight on Earth will remain the same i.e. 35 kg.

Hence, the correct option is (a).

A driver of a car traveling at 15.0 m/s applies the brakes, causing a uniform acceleration of -2.0 m/s squared. How long does it take the car to accelerate to a final speed of 10.0 m/s? How far has the car moved during the braking period?

Answers

Answer:

a) 2.5secs

b) 31.25m

Explanation:

a) From the question, we are given;

Initial speed u = 15m/s

Final speed v = 10.0m/s

Acceleration =-2.0m/s²

Required

How long it takes take the car to accelerate (Time t)

Using the equation of motion

v = u+ at

10 = 15+(-2)t

10 = 15-2t

10-15 = -2t

-5 = -2t

t = 5/2

t = 2.5secs

Hence it takes the car 2.5secs to accelerates.

b) We are to find distance S

Using the equation

S = ut + 1/2at²

S = 15(2.5)+1/2(-2)(2.5)²

S = 37.5-6.25

S = 31.25m

Hence the car as moved by 31.25m during the breaking period.

Hiii I think the answer might be 3.3 seconds,not exaclty sure tho

A6 kg bag of rice is on the top shelf at a grocery store.
The height of the shelf is 2 meters.
What is the rice bag's gravitational potential energy?

Answers

Answer:

117.6 J

Explanation:

The gravitational potential energy of a body can be found by using the formula

GPE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

GPE = 6 × 9.8 × 2

We have the final answer as

117.6 J

Hope this helps you

Answer:

b

Explanation:

Will mark brainliest only if you show all work!

A man speeding at 40m/s decides to outrun the cops and starts to accelerate at a rate of 2.5m/s2 for 12 seconds. What is the criminal’s new speed?

Answers

A :-) For this question , we should apply
v = u + at
Given - u = 40 m/s
a = 2.5 m/s^2
t = 12 sec
Solution -
v = u + at
v = 40 + 2.5 x 12
v = 40 + 30
v = 70 m/s

.:. The new speed is 70 m/s.
( speed = velocity ).

the strongly blown ballon gets blasted why?

Answers

Answer:

Because of pressure.

Thanks

Explanation:

The pressure bursts out the balloo

When you blow up a balloon, you force extra air into it, creating higher air pressure inside the balloon than outside of it. Given the chance, the air molecules will move to a lower-pressure environment—which is why, if you let go of a balloon's opening without tying it off, air you added will rush out again

The atomic number tells us the...
Number of protons
Atomic mass
Number of electrons
Number of neutrons
Please help, I'm marking the person with the correct answer Brainliest!
I am giving 20 points!

Answers

Answer:

The atomic number tells us the number of protons.

Explanation:

Hope this helps and I hope u have an Amazing day!!

Atomic mass is your answer or number of protons

A 1500 kg car is accelerated by a force of 2000 N for 15 s.

What is the acceleration of the car?


If the car started at rest, how fast is the car going after 15s? (1pts)


How far (∆x) would the car have traveled after the 15s? (1pts)

Answers

By Newton's second law, the car has acceleration a such that

2000 N = (1500 kg) a

a = (2000 N) / (1500 kg)

a = 4/3 m/s² ≈ 1.33 m/s²

After 15 s, the car will attain a speed of

(4/3 m/s²) (15 s) = 20 m/s

It will have traveled a distance ∆x such that

(20 m/s)² - 0² = 2 (4/3 m/s²) ∆x

x = (20 m/s)² / (8/3 m/s²)

x = 150 m

shower thoughts...
if two people on each side of the world drop a piece of bread, the earth briefly becomes a sandwich....

Answers

Answer:

in your mind yes but the bread is smaller than the earth thus it wouldnt turn the earth into a sandwich.

please help !!!!! I’ll give brainliest !

Answers

Answer:

Honestly for me it's a bit too blurry. Sorry luv.:(

Explanation:

Integrated Science- 8th grade science
Please Help ASAP!
Its almost the end of semester And I need to fix my grade for science so PLEASE help!
its almost report cards time!

Answers

Answer:

"Why"

Explanation: A scientific law is a description of how the natural world behaves under certain circumstances.

Answer:

technically its all of but the most  common is "Why"

Explanation:

A person runs 3km north. One hour later, she runs 3km south, which of the following statements describes the persons complete trip

Answers

The person's complete trip was a 6km round trip because they traveled 3km north and then 3km south, returning to their original location.

What is trip?

A trip is a journey or excursion to some destination, usually for a specific purpose. It can be as short as a day trip or as long as a round-the-world adventure. A trip typically involves travel by foot, car, railroad, boat, or airplane and often involves multiple destinations. It may also involve activities such as camping, hiking, sightseeing, and other leisure activities. Travelers usually plan trips in advance to ensure they have enough time to see and do the things they want to. Trips can also be spontaneous, with travelers deciding on the fly where to go and what to do.

To learn more about trip
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A rose plant inherited two alleles for white flower petals.

Which conclusion is best supported by the given information?

Answers

Answer:

a

Explanation:

Answer:

A or each parent had at least one allele for white pedals

Explanation:

A 40.0-kg package on a the roller belt conveyor is moving at 0.600 m/s. What is
its kinetic energy? *
O 7.2 J
O 12 J
O 14.4 J
O 0J
O24J

Answers

Answer:

7.2 J

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex]k = \frac{1}{2} \times 40 \times {0.6}^{2} \\ = 20 \times 0.36 \\ = 7.2[/tex]

We have the final answer as

7.2 J

Hope this helps you

Its A ! Hope this helped

each element has an atomic number state which is meant by atomic number

Answers

Answer: The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons. The number of protons in an atom is called its atomic number. This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.

Explanation:

A chemical bond resulting from the exchange of electrons between two atoms is a(n) ________________ bond.

a
covalent
b
ionic
c
Lewis
d
metallic

Answers

Answer:

a covalent

Explanation:

ionic bonding involves only the transfer of electrons but not exchange of electrons

deducing the acceleration = deduce the gradient of velocity-time graphs
true or false?

Answers

Answer:

True

Explanation:

Understanding the relationship between change in velocity with time will explain to you how the object is accelerating or decelerating. This means acceleration is a ratio calculated from the change in velocity of an object and change in time. In a velocity time graph, the y-axis represents the velocity and the x-axis represents the time.

The slope of the graph m = Δ y-axis values/Δ x-axis values

m= Δvelocity / Δ time

m= Δ v / Δ t ------this the definition of acceleration so;

a= Δ v / Δ t

Conclusion : The slope/gradient of a velocity -time graph is acceleration.

When the 9-kg pendulum bob is swinging, it reaches its maximum speed at its lowest position at v = 7 m/s. calculate the pendulum bob's kinetic energy at the moment it passes the lowest position. (Round your answer to hundredth, keep two decimal digits. Fill the numerical value in the box without unit.)

Answers

Maximum because when moving in circular motion it move front to back

malnourishment is harmful during​

Answers

Answer:

People who are in good health at the beginning of a hunger strike "are usually at little risk of dying from malnutrition for at least six to eight weeks," the guidelines state. But people who are ill can die from malnutrition in as little as three weeks. Malnutrition during pregnancy can be quite harmful. Maternal malnutrition during pregnancy can affect the wellbeing and development of the baby. Malnutrition is when the baby and in this case, the mother do not receive adequate nourishment during pregnancy. It means the baby, in the mother’s womb does not get enough nutrients to grow.

Hope this helps!

What is the work energy transfer equation?

Answers

Answer:

The equation used to calculate the work done is: work done = force × distance. W = F × d. This is when: work done (W) is measured in joules (J)

Answer:

The equation used to calculate the work done is: work done = force × distance. W = F × d. This is when: work done (W) is measured in joules (J)

Explanation:

The net work done on a particle equals the change in the particle's kinetic energy:

I need help with all of these questions

Answers

Answer:

This was my best estimation of the answers

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