True or False. A loud noise gives off less energy than a quiet noise.​

Answers

Answer 1

Answer:

True

Explanation:

A loud noise cancels out

Answer 2

A loud noise gives off less energy than a quiet noise : False

Meaning of loudness

Loudness is the intensity of sound heard in a given period. it is dependent on the amplitude of the sound waves.

The loudness of a sound is proportional to the square of the amplitude of the sound wave, meaning that the larger the amplitude of wave, the more the intensity and the more the sound.

Since waves carry energy along, it means a wave with a large amplitude transfers more energy and therefore loud sound.

In conclusion, the louder the sound the more energy it gives off and the quieter the sound the less energy it gives off.

learn more about properties of sound waves : https://brainly.com/question/9898147

#SPJ2


Related Questions

w h a t
Please help :(

Answers

Answer:

y = 1

Explanation:

We need to see the equation given

y = 10/x

So we need to replace the value of x = 10 into the equation.

y = 10/10

y = 1

Jen had an average speed of 2.5 m/s when hopping on one foot. If she hopped for 5.0 seconds, for what distance was she hopping?

Answers

Explanation:

distance

speed =_________

time

distance = speed × time

= 2.5 × 5.0

distance = 12.5 m

Why is it so important to train your core muscles?

Answers

Answer:

It helps prevents falls and supports your body. So having a strong core is beneficial to everyone because it allows your body to function properly. Improved Balance and Stability. Core exercises train the muscles in your pelvis, lower back, hips and abdomen to work together.

True or False: In a parallel circuit, if one path is broken, electrons continue to flow to the
other paths

Answers

Answer:

false

Explanation:

this is what google said

No because the path the electricity needs to follow is broken. In a parallel circuit, electricity has more than one path to follow. Electrons can follow different paths as they flow from the negative side of the battery to the positive side.


Which of the following best describes applying a force over a period of time?
power
energy
Impulse

Answers

impulse
it’s the only one that makes sense energy is just light and power almost the same thing

How much time does it take an object to fall 4.9 meter?
A) less than 1 second
B) 1 second
C) more than 1 second

Answers

Answer:

C more than 1 second

Explanation:

it will take time since its 4.9 meters and how hard you throw it down

A net force of 20 N is applied to a 5 kg object. What is the acceleration of the object?

Answers

Answer:

[tex]4ms^{-2}[/tex]

Explanation:

F = ma

Rearrange to get acceleration on its own:

a = [tex]\frac{F}{m}[/tex]

Substitute 20 for F and 5 for m:

a = [tex]\frac{20}{5}[/tex] = 4 meters/second/second

400 N of load can be overcome by an effort of 50 N by using a lever. Calculate the mechanical advantage of the lever.

Answers

Answer:

load (l)=400N

Effort(E)=50N

mechanical advantage (MA)= load ÷Effort

(ma)=400÷50

(ma)=8

Explanation:

I copy pasted from the answer from the same question. Remember to first check if ur question is there

The acronym used when referring to the Big Five Factors is OCEAN. True False

Answers

true

Explanation:

Because I did the test

Answer:

The right answer is True

Is a dinosaur a biotic factor? Why?

Answers

yes bc dinosaurs are living things. Biotic means living

Answer: yes it is

Explanation: A biotic factor is something that is living. this also apply to plants animals and people. A dinosaur was once a living being so it would be classified as a biotic factors. An abiotic factor is something that is not living .so that would be tables chairs and clothes.

A car is traveling in a straight line along a highway at a constant speed of 80 miles per hour for 10 seconds. Find the acceleration.​

Answers

The acceleration it's the difference of speed (final speed - initial speed)  divided by the time. So:

a = Δv/t

In this case the initial speed is equal to 0. The final speed is equal to 80 miles/hour. The time is 10s.

a = 80 miles/hour divided by 10 = 8 miles/hour

Answer:

8

Explanation:

Because as you can see 80/10= 8

Answer is 8

A student is given an investigation of the human body. The student is to predict how new cells are created. According to cell theory, which prediction is correct?

A.Cells grow and develop, but are never replaced.

B. New cells are created from pre-existing cells in the human body.

C. New cells are created but quickly die during cell growth.

D. Humans are born with all the cells they will ever need.

Answers

Answer:

B. New cells are created from pre-existing cells in the human body.

Explanation:

According to the cell theory, the correct assumption from the student's investigation is that "new cells are created from pre-existing cells in the human body".

One of the postulates of the cell theory is that all cells originated from pre-existing cells. Also, a cell is the fundamental unit of life.

So, the student is correct to say that new cells are created from pre-existing cells in the human body.

which is larger 15mm or 0.15cm

Answers

Answer:

1 cm = 10mm

Explanation:

hey there both are equal

Write an equation of the line in slope-intercept form.

Answers

the answer would be y=1/3x+2

PLZ HELP ME

1. A stone is thrown horizontally from a cliff 30m high with an initial speed of 20m/s. How far from the cliff does the stone strike the ground?


2. A ball rolls off the edge of a table 1.44m above the floor and strikes the floor at a point 2m horizontally from the edge of the table.

A) What is the time the ball was in the air?


B) What is the initial velocity of the ball?



3. A golfer hits a ball and gives it an initial velocity of 40 m/s, at an angle of 30º above the horizontal.

A) How long does the ball stay in the air?


B) How far horizontally (the range) does the ball travel before hitting the ground?

Answers

Answer:

1. The stone will strike the ground 49.46 m from the base of the cliff

2. A) Approximately 0.542 seconds

B)  Approximately 3.69 m/s

3. A) The time the ball spends in the air is approximately 4.0775 s

B) The horizontal range is approximately  141.25 m.

Explanation:

1. The time it takes the stone to land is given by the equation, t = √(h/(1/2 × g)

∴ t = √(30/(1/2 × 9.81)) ≈ 2.473 seconds

The horizontal distance covered by the stone in that time = 20 × 2.473 ≈ 49.46 m

The stone will strike the ground 49.46 m from the base of the cliff

2. A) The time the ball spends in the air = t = √(h/(1/2 × g)

∴ t = √(1.44/(1/2 × 9.81)) ≈ 0.542 seconds

B) The initial horizontal velocity, u = Horizontal distance/(Time) = 2/0.542 ≈ 3.69 m/s

The initial horizontal velocity ≈ 3.69 m/s

3. A) The time the ball spends in the air is given by the following equation;

t = 2 × u × sin(θ)/g = 2 × 40 × sin(30)/9.81 ≈ 4.0775 s

t ≈ 4.0775 s

B) The horizontal range, R, of the  ball is given by the equation for the range of a projectile as follows;

[tex]Range, R = \dfrac{u^2 \times sin (2 \cdot \theta) }{g}[/tex]

Substituting the known values, gives;

[tex]Range, R = \dfrac{40^2 \times sin (2 \times 30^{\circ}) }{9.81} \approx 141.25 \ m[/tex]

The horizontal range ≈ 141.25 m.

1. In your own words explain what happens at a subduction zone. 2. In your own words explain what happens at a mid-ocean ridge. 3. At a subduction zone what causes magma to rise?

Answers

Answer:

1. The subduction zone serves as the meeting point for two tectonic plates.

2. At the Mid- Ocean ridge, decompression melting occurs.

3 What causes the magma to rise is the increase in pressure caused by collection of gases by the magma.

Explanation:

Subduction zone is define as a zone where tectonic plates ( an oceanic plate slides beneath a continental plate) meets and contributes to the rise of magma to the surface in geological sciences.

At the Mid - Oceanic ridge, decompression melting occurs. As mantle ascends beneath the mid-ocean ridge, less and less rock lies above it, so large pressure changes occur, which leads to melting. The melt is less dense than the solid, and rises to the surface to form the oceanic crust.

At the subduction zone the magma that is formed is usually made up of silica rich lava. Thick silica rich magma does not release the gasses very easily so they build up inside the magma chamber. As the gasses collect in the chamber, the pressure rises. It is possible for the pressure to rise so much that the chamber cannot contain the magma and it erupts explosively.

A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to know about the speed and direction of the satellite after the crashes. Why would the crash affect the motion of the satellite, and which crash caused a greater change in motion for the satellite?

Answers

Answer & Explanation:

Crashing into the asteroid would cause the satellite to slow down, stop, or reverse direction, because it is a force in the opposite direction to the satellite's motion. Whichever crash was a stronger force would cause it to change motion more. It takes a stronger force to change the velocity of a more massive object.

Two balls have the same mass. One ball moving along the positive x–axis and the other ball moving along the positive y–axis undergo perfectly inelastic collision. What can you say about the motion of the balls after the collision?

A.
The balls stick and move together.
B.
The balls separate immediately.
C.
The first ball stops while the other ball starts moving.
D.
The two balls travel off in opposite directions, 180° apart.

Answers

Answer:

A. The balls stick and move together.

Explanation:

When a bodies undergo perfectly inelastic collision, the two bodies stick together after the collision and begins to move.

In this collision, kinetic energy is not conserved. For perfectly elastic collision, the two bodies conserve kinetic energy and begin to move apart.

Kinetic energy is not conserved because some of the energy gets converted into other forms of energy.

You are taking an image of a patient who is in extreme discomfort while participating in the CT scanning process. Which of the following qualities must you exhibit to obtain a clear and accurate image? O communication skills O interpersonal skills o detail oriented physical endurance​

Answers

Answer:

Interpersonal skills

Explanation:

Answer:

The right answer is interpersonal skills

Explanation:

give the other person brainliest they deserve it

How does the initial vertical velocity (right after it starts moving) of a horizontally launched projectile compare with it's final vertical velocity (right before it hits the ground)?

They are equal

The initial velocity is greater

The final velocity is greater

Answers

Answer:

The final vertical velocity is greater than the initial vertical velocity

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed vox from a height h, it describes a curved path ruled by gravity.

The resultant motion is the composition of the vertical motion and the horizontal motion.

The speed in the horizontal direction is always constant:

vx=vox

The speed in the vertical direction starts from zero and gradually increases in time:

vy=g.t

When the object was just launched, t=0, and its vertical velocity is 0

After some time has passed, the object is about to hit the ground, and its vertical velocity is greater than zero, thus:

The final vertical velocity is greater than the initial vertical velocity

Find the average net force.

Answers

Answer:

given

mass= 3.5 kg

distance covered= 0.4m

inital speed = 1.5 m/sec

final speed = 0 m/sec

To find

net force

solution

formula for force :

[tex] \fbox{f = m.a}[/tex]

In order to find the force we need to find the acceleration.

According to third equation of Kinematics-

[tex] \bold{ {v}^{2} = {u}^{2} + 2as}[/tex]

where,

v= final velocity

u=inital Velocity

a=Acceleration

s=Distance covered

put the value in the above equation

0= (1.5)²+ 2a x 0.4

-2.25= 0.8a

a = -2.25/0.8

a= - 2.8125 m/sec²

now put the value 0f accleration in formula of force

F = m.a

F = 3.5 x - 2.8125

F= -9.84375 N

someone please help​

Answers

[tex]w = F * S[/tex]

[tex]F = 20\\S = 10\\F * S = 20 * 10 = 200[/tex] Joules <- 1st answer

[tex]w = F * S[/tex]

[tex]1234 = F * 100[/tex]

[tex]F = \frac{1234}{100}[/tex]

[tex]F = 12.34 N[/tex]  <- 2nd answer

You are twice as likely to become good friends with the person who is in the dorm room next to you than the person two doors down. This is due to:

A. Proximity.
B. Common Interests.
C. Shared Values.
D. Social Background​

Answers

I think A. Proximity
Since the person is closer, you get to see them more often
The correct answer is A

You push against a wall and the wall pushes back on you.
O Newton's 1st Law of Motion
O Newton's 2nd Law of Motion
Newton's 3rd Law of Motion

Answers

Answer:

Its the third law of motion.

Explanation:

Newton's third law of motion states that every action has equal and opposite reaction.

Ashley is flying a plane that has to reach a gradient of 360m/km in order to take off and not crash. Her goal is to travel from sea level to an elevation of 1000m at a distance of 2.8km. Calculate the gradient of Ashley’s flight and determine if she will crash!

Answers

Answer:

She is likely to crash because her flight gradient is lesser than the flight gradient required gradient to avoid crashing

Explanation:

The given parameters are;

The required gradient of the plane Ashley is flying needs to reach in order to take off and not crash = 360 m/km

The initial elevation of the plane Ashley is flying = Sea level = 0 m

The goal Ashley intends to make = Elevation of 1000 m at 2.8 km. distance

∴ Ashley's goal = Traveling from sea level to 1000 m at 2.8 km horizontal distance

We have;

The gradient  = Rate of change of elevation/(Horizontal distance)

Therefore;

The gradient of Ashley's flight = (1000 - 0)/(2.8 - 0) = 357.143 m/km

The gradient of Ashley's flight ≈ 357.143 m/km which is lesser than the required 360 m/km in order to take off and not crash, therefore, she will crash.

Which of the following correctly puts the objects in order by increasing inertia?
A. bird, butterfly, airplane
B. butterfly, bird, airplane
C. airplane, bird, butterfly
D. buttferfly, bird, airplane

Answers

C. Airplane,bird,butterfly

The different odds of survival between a preterm and a full-term newborn involve: cephalic development.
the maturation of the skeletal system.
the maturation of the neurological, respiratory, and cardiovascular systems.
proximo-distal development.

Answers

Answer: B

Explanation:

the person is not able to see the far lying object clearly. which type of lens will the doctor prescribe him give reason?

Answers

Answer:

correction of farsightedness uses a converging lenses that compensates for the under convergence by the eye. the converging lens produces an image farther from the eye than the object so that farsighted can see it clearly.

A man is pulling on a rope with a force of 72 N
directed at an angle of 36◦
to the horizontal.
What is the x-component of this force?
Answer in units of N.

Answers

Answer:

57,6N

Explanation:

To find the component  of a force on the x-axis we can simply do:

F * cos(36) = 72N * 0.8 = 57,6N

Please answer the question 1 ii) please!!! Will mark Brainliest! !

Answers

Answer:

I think it's 10 minutes per km

Answer:

1.4 meters per second (5.0 km/h, 3.1 mph, 4.6ft/s

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