0.030 m3.
The balloon is compressed at a constant temperature causing the volume
decrease to 0.025 m3.
No helium leaves the balloon.
Calculate the new pressure in the balloon

Answers

Answer 1

Answer:

see below

Explanation:

P1V1 = P2V2

100 000 (.03)  = x ( .025)     x = 120 000 pa


Related Questions

Q6. When a girl steps on to a weighing machine, it shows a reading of 42kg.
(a) What is her mass?

Answers

Answer:

92.5 pounds

Explanation:

18. A simple series circuit has a current of 2 A
and a resistance of 0.5 ohms. Calculate the
voltage drop across this circuit.

Answers

I think it is;
Current = vtotal/requ
2A = vtotal/0.5
2*0.5= vtotal
1=vtotal

It is more difficult to determine the total amount of dark matter in an elliptical galaxy than in a spiral galaxy. Why

Answers

Answer:

Elliptical galaxies lack the atomic hydrogen gas that we use to determine orbital speeds at great distances from the centers of spiral galaxies.

What is the essential difference between microwaves and blue light?.

Answers

Answer:

There is no essential difference between microwaves and blue light other than a difference in frequency and wavelength.

Explanation:

What determines the speed of an electromagnetic wave?.

Answers

Hi!The speed of a wave is a product of its wavelength and frequency. Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa. This relationship is represented by the equation: Speed = Wavelength × Frequency.

When the net force acting on a droplet of water becomes zero, then it falls with

A.final velocity
B.initial velocity
C.terminal velocity
D.zero velocity ​

Answers

Answer:

C. Terminal Velocity

Explanation:

Terminal velocity is the maximum velocity an object can experience under free-fall. It occurs when the force of drag (air resistance) matches the force of gravity, causing zero net force. Since [tex]F_{net}=ma[/tex], zero net force means zero acceleration.

Remember that an object can be moving at some velocity and still have zero net force. The zero net force just indicates zero acceleration, meaning the velocity is constant and is not changing.

PLEASE HELP ASAP
What conclusions can you draw about the relationship between string length and frequency and other patterns in the characteristics of sound waves, such as pitch and loudness? Write evidence-based claims to support your statements.

Answers

(a) Frequency of sound wave is inversely proportional to string length.

(b) Pitch of a sound depends on the frequency while loudness depends on the amplitude of sound.

Relationship between string length and frequency

The relationship between string length and frequency is given as;

λ = 2L

where;

λ is wavelengthL is length of the string

v = fλ

f = v/λ

f = v/2L

Thus, frequency of sound wave is inversely proportional to string length.

Relationship between pitch and loudness of sound

The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

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Milo and a friend hold opposite ends of a long toy spring. Milo compresses a few of the coils and then let’s go, while Milo’s friend keeps the other end of the spring held tight

Answers

In a case whereby Milo compresses a few of the coils and then lets go, while Milo's friend keeps the other end of the spring held tight the  choices that best describes the situation with the spring's energy is that Energy moves from Milo's end to the opposite end as a wave.

What is the energy of a spring?

Work is done when a spring is extended or compressed  can be descvribed as the energy in the spring, however the Elastic potential energy is been seen to be stored in the spring.

It should be noted that the Provided inelastic deformation  could be seen when the work done is equal to the elastic potential energy stored. Hence the Energy moves from Milo's end to the opposite end as a wave.

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missing part

Milo compresses a few of the coils and then lets go, while Milo's friend keeps the other end of the spring held tight. Which of the following choices best describes what is happening with the spring's energy? Energy moves from Milo's end to the opposite end as a wave.

Energy moves from Milo's end  i the same direction.

Energy do not moves from Milo's end to the opposite end as a wave.

How many turns should a coil wrapped around the outside of the solenoid have so that the emf induced in the coil is 15 V

Answers

The number of turns a coil wrapped around the outside of the solenoid should have is : 127 turns

Given data :

Diameter of solenoid  =  25-cm

Rate of increase of magnetic field = 2.4 T/s

Induced emf = 15 v

Determine the number of turns of the coil

Induced emf = N ( dФ / dt ) ---- ( 1 )

where : ( dФ / dt )  = ( A (db/dt) )

Equation ( 1 ) becomes

Induced emf = N A ( db/dt ) ------ (2)

From equation ( 2 )

N = Induced emf / A ( db/dt ) ------ ( 3 )

where : Induced emf = 15 v . db/dt = 2.4 T/s , A = area of solenoid

Area of solenoid = πr² = π * ( 0.125 )²

Insert values into equation ( 3 )

N = 15 / ( π * ( 0.125 )² ) * 2.4

   = 127.32 ≈ 127 turns

Hence we can conclude that The number of turns a coil wrapped around the outside of the solenoid should have is : 127 turns.

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Below is the missing part of the question

The magnetic field inside a 25-cm-diameter solenoid is increasing at 2.4 T/s

Microwave ovens emit waves of about 2450 MHz. What is the wavelength of this light?

Answers

12.24 cm

Considering the frequency of 2,450 MHz, the wavelength of microwave oven radiation is about 12 cm and the quantum energy of a microwave photon is about 1 x 10-5 eV.

Beams of different frequency electromagnetic radiation are listed below. Each beam has the same total energy. Rank these beams on the number of photons in each beam.

Answers

The arrangement of the photons based on the decreasing number of photons in each beam is; gamma ray >  x-ray > green light > yellow light > AMradio wave > FM Radio wave.

What is electromagnetic radiation?

The term electromagnetic radiation refers to those rays that do not require a medium of propagation. That is, the are travel through vaccum. We must note that the greater the frequency of the wave, the greater the number of photons.

Hence, the arrangement of the photons based on the decreasing number of photons in each beam is; gamma ray >  x-ray > green light > yellow light > AMradio wave > FM Radio wave.

Missing parts;

Beams of different frequency electromagneticradiation are listed below. Each beam has the same total energy.Rank these beams on the number of photons in each beam. green light, FM Radio wave, x-ray, yellow light, gamma ray, AMradio wave

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What do you look forward to more than anything else once school gets out for the summer.
PLEASE HELP!

Answers

Explanation:

10 Reasons to Look Forward to Going

Back to School..

The people. ... The places. ... The events. ... Extracurricular activities. ... The dining plan options. ... The housing options. ... The freedom. ... The first day of classes.

If a net force acts on an object, the object may change speed, change direction or do neither.

True

False

Answers

Answer:

False

Explanation:

A net force on an object causes acceleration or a change in direction....not 'neither'

It is false that if a net force acts on an object, the object may change speed, change direction or do neither. Details about motion can be found below.

What is Newton's law of motion?

Newton's first law of motion also called law of inertia states that an object will remain at rest until it is acted upon by an external force.

This law suggests that an object will change direction or speed when acted upon by a net force.

Therefore, it is false that if a net force acts on an object, the object may change speed, change direction or do neither.

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What is an electric field? How
do you calculate the electric
field due to a point charge?

Answers

An electric field is an electric property associated with each point in space when charge is present in any form.

Which imaging technique uses x-rays to make cross-sectional images of the body? mri ct scan x-ray imaging ultrasound

Answers

Computed tomography (CT) is an imaging tool that combines x-rays with computer technology to produce a more detailed, cross-sectional image of your body.

What is CT-Scane?

Computed tomography (CT) scan is a useful diagnostic tool for detecting diseases and injuries.

Computed tomography (CT) is an imaging tool that combines x-rays with computer technology to produce a more detailed, cross-sectional image of your body.

It uses a series of X-rays and a computer to produce a 3D image of soft tissues and bones.

CT is a painless, noninvasive way for your healthcare provider to diagnose conditions.

A CT scan lets your doctor see the size, shape, and position of structures that are deep inside your body, such as organs, tissues, or tumors.

Hence Computed tomography (CT) is an imaging tool that combines x-rays with computer technology to produce a more detailed, cross-sectional image of your body.

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Answer:

B

Explanation:

just took the test.

Please help with this physics question I am stuck. see attachment

Answers

distance has magnitude only


What is the current in a 10V circuit if the resistance is 20?

Answers

Answer:

check the attachments for the solution

Does anyone know this stuff? I’m so confused already

Answers

Explanation:

A position versus time graph gives the position of an object at a certain point in time. The slope, also known as the derivative, will give the change in the position with respect to time. The slope will give you the instantaneous velocity of the object due to velocity being defined as the change in position over time

Answer:

see below

Explanation:

This graph shows an object initially travels at a constant velocity for 4 seconds.....the velocity is the slope of the graph for these 4 seconds.  

   then it remains stationary from t = 4 to t =6  ...see the graph is flat (slope = 0   means no velocity) ...at position 3  

  at t = 6 it reverses course ....a negative velocity (steeper slope ...higher velocity)  until it reaches position 0 at t = 9  

These times are what I think I can see...the graph is kind of fuzzy.

Anders suffered a shock when his electric radio dropped into the bathtub--while anders was taking a bath. Anders argued that he did not realize it was dangerous to operate an electric radio near his bathtub. If he sues the radio manufacturer for damages, which claim is he most likely to make?.

Answers

The claim Anders is most likely to make is the failure of the manufacturer to warn about such risk.

What is a Risk?

This is defined as the possibility of something bad happening and in this case it is electric shock when dropped into the bathtub.

Anders can decide to sue for not warning against risk of electric shock when in contact with water.

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Two unlike charges placed near each other​

Answers

They would attract if they are like magnets + and -

Answer:

They would attract

          but

like charges will repel

Explanation:

HOPE THI HELPS **

The slope of a line describes the __________.A.change in horizontal direction over the change in vertical direction.change in vertical direction over the change in horizontal directionC.run over the riseD.distance between two points

Answers

The slope of a line describes the : ( B ) Change in vertical direction over the change in horizontal direction

What is slope ?

Slope is the measure of the steepness of a line it is caluculated by dividing the change in the vertical direction by the change in horizontal direction. slope is also known Δy / Δx.

Hence we can conclude that slope of a line describes the : ( B ) Change in vertical direction over the change in horizontal direction.

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hello people~
A conductor with a positive charge
(a) is always at +ve potential.
(b) is always at zero potential.
(c) is always at negative potential.
(d) may be at +ve, zero or -ve potential.​

Answers

Answer:

B

Explanation:

Let's see the formula

V=kq/r

If q is positive it yeilds V or potential as positive hence it is at zero potential

Option B is correct

Hello people ~
Which of the following statement is true?
(a) Electrostatic force is a conservative force.
(b) Potential at a point is the work done per unit charge in bringing a charge from any point to infinity.
(c) Electrostatic force is non-conservative
(d) Potential is the product of charge and work.

Answers

Answer:

In case of electrostatic force, the work done is independent of path, it only depends on the final and initial positions of the charge. This path independent nature makes electrostatic force a conservative force. Thus, the option a becomes true, and the opposite statement (ie.

Answer:

Option A

Explanation:

As we know that electrostatic force is path independent

It is the force present between the charges of atoms .

Hence it's conservative force.

The chamber is now filled with a gas that has an unknown speed of sound. The students find that the lowest frequency at which they can hear a maximum in the sound level is 200 Hz. If the students slowly increase the frequency, what is the next frequency at which the sensor would measure a maximum in the sound level

Answers

If the fundamental frequency or first harmonic of the sound is 200 Hz, the next frequency will be third harmonic and it is 600 Hz.

Fundamental frequency of a closed pipe

This is the lowest frequency at which a maximum in the sound level can be heard.

First harmonic of a closed pipe, f₀ = v/4L

Third harmonic of a closed pipe, f₃ = 3v/4L = 3f₀

If the fundamental frequency or first harmonic of the sound is 200 Hz, the next frequency will be third harmonic and it is calculated as follows;

f₃ = 3f₀ = 3(200 Hz)

f₃ = 600 Hz

The complete question is below:

Students use a speaker connected to a sine wave generator to project sound waves into the open left end of a tube that is closed on the right end. The speaker is very close to the tube. A sensor is used to measure the pressure differences created by the sound and the results are displayed on a computer. The entire apparatus is in a sealed chamber that can be filled with different gases.

The chamber is now filled with a gas that has an unknown speed of sound. The students find that the lowest frequency at which they can hear a maximum in the sound level is 200 Hz. If the students slowly increase the frequency, what is the next frequency at which the sensor would measure a maximum in the sound level

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How much work can a 1000-watt motor do in 5.0 seconds?

A. 4.0 × 101 J

B. 2.0 × 102 J

C. 5.0 × 103 J

D. 2.5 × 104 J

Answers

Explanation:

[tex]power = \frac{work}{time} [/tex]

Given

POWER=1000 W

TIME=5s

WORK=POWER×TIME

=1000×5

5×10³

OPTION C

How many times a year does the earth revolve around the sun?.

Answers

Answer:

once

Explanation:

the earth orbits the sun fully once a year.

The source of the hot, intergalactic gas in many rich, regular clusters of galaxies appears to be.

Answers

Answer:

collisions between galaxies in the cluster.

Explanation:

--

When a wave is too steep to support itself, the wave front collapses creating a ________ that advances up the shoreline.

Answers

When a wave is too steep to support itself, the wave front collapses therefore creating a break.

What is a Wave?

This is defined as the propagation of disturbance from one place to another in an organized manner.

In situations where the wave is  too steep to support itself there is a break in the wavefront which  advances up the shoreline.

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17. An object with a mass of 2.0 kg has a force of 6.2 newtons applied to it. What is
the resulting acceleration of the object?

Answers

Answer:

F=mass×acceleration

Acceleration=force÷mass

6.2/2=3.1

The resulting acceleration is 3.1 m/s2

Answer:

3.1 m/s²

Explanation:

We know the relation :

Force = Mass x Acceleration

We can rearrange so it is equal to acceleration :

Acceleration = Force / Mass

Here :

Mass = 2.0 kgForce = 6.2 N

Substituting the values in our rearranged equation :

a = 6.2 / 2.0a = 3.1 m/s²

Therefore, the resulting acceleration of the object will be 3.1 m/s²

Rock 1, of mass m, reaches a maximum height hmax after being launched. During the time between the instant rock 1 is launched from height h0 and the instant it returns to height h0, the work done on the rock by the gravitational force is

Answers

The work done on the rock when it reaches maximum height is by gravitational force is 9.8mh (J).

Work done on the rock by gravitational force

The work done on the rock by the gravitational force is determined  as follows;

P.E = mgh

where;

m is mass of the rockh is the maximum height reached by the rockg is acceleration due to gravity

P.E = m x 9.8 x h(max)

P.E = 9.8mh (J)

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