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Physics Questions and Answers October 14, 2019

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Please answer this using Ampere's law and unidirectional fields. Thank you
Please answer this using Ampere's law and

Waves. A wave has a wavelength of 0 . 3 0 meters and a frequency of 4 4 0 Hz . What is the wave - speed? A ) 3 4 4 m / s B ) 2 1 1 m / s C ) 1 3 2 m / s D ) 1 0 1 m / s E ) no correct answer

Light is shining perpendicularly on the surface of the earth with an intensity of 6 8 0 W m 2 . Assuming that all the photons in the light have the same wavelength ( in vacuum ) of 6 5 2 nm , determine the number of photons per second per square meter that reach the earth. N = i
Light is shining perpendicularly on the surface

The magnitude of the electric field at a point P for a certain electromagnetic wave is 5 7 1 N / C . What is the magnitude of the magnetic field for that wave at P ? 2 . 9 7 pT 1 . 1 0 pT 1 . 4 1 2 . 4 1 1 1 . 9 0 pT
The magnitude of the electric field at a point P

What are the SI units of density? kg / m k g m 3 kg k g m 2 Select all that apply Assume that a static fluid is confined in a container and completely fills the container. The pressure of the fluid at the top of the container increases. Select all of the following statements that are true. The pressure of the fluid in the middle of the container
What are the SI units of density? kg / m k g m 3

What is the maximum efficiency of a heat engine whose operating temperatures are 6 1 0 C C and 3 0 0 C C ?

An ideal monatomic gas is contained in a vessel of constant volume 0 . 1 3 0 m 3 . The initial temperature and pressure of the gas are 3 0 0 K and 5 . 0 0 atm , respectively. The goal of this problem is to find the temperature and pressure of the gas after 1 1 . 0 kJ of thermal energy is supplied to the gas. ( a ) Use the ideal gas law and initial
An ideal monatomic gas is contained in a vessel

An orangutan looks into an aquarium filled with water with flat sides and sees a sperm whale 1 8 . 0 m from the side of the tank. How far from the side of the tank is the whale? The index of refraction of water is 1 . 3 3 A ) 1 3 . 5 m B ) 9 . 8 m C ) 1 8 . 0 m D ) 3 . 1 4 m E ) 2 3 . 9 m
An orangutan looks into an aquarium filled with

Two surellites P and Q , of equal mass, orbit the Eurth at radii R and 2 R respectively, Which one of the following statements is correct" A . P has less kinctie cuergy and mone potential energy than Q . B . P has less kinctic encrgy and less potcotial cnergy than Q . C . Phas more kinetic energy and less potential energy than Q . . Phas more
Two surellites P and Q , of equal mass, orbit the

Preview File Edit View Go Tools Window Help Screenshot 2 0 2 4 - 1 1 - 2 3 . . . Screenshot 2 0 2 4 - 1 1 - . . . Consider the vectors in the figure. PART A short answer INCORRECT 0 1 points Find the magnitude of vec ( A ) vec ( B ) Week 8 open Nov 1 4 at 3 : 0 0 PM due Nov 2 2 at 1 1 : 0 0 AM Week 9 , November 2 5 Week 9 open Nov 2 1 at 3 : 0 0
Preview File Edit View Go Tools Window Help

Question 7 1 pts An 1 0 kg object pushed to the right on a level surface with a force of 1 0 0 Newtons and pushed to the left by an opposing force of 6 0 Newtons, has a net sideways force of q , acting on it 1 0 0 N to right - 6 0 N to left 4 0 N to right 1 6 0 N to right
Question 7 1 pts An 1 0 kg object pushed to the

a dog barking at sound intensity B = 8 6 db . a second dog comes up and parks at the sameintensity. what dound intensity do you hear?

An RLC series circuit is connected to an oscillator with a maximum emf of 1 0 0 V . If the voltage amplitudes VR , VL , and VC are all equal to each other, then VR must be: A ) 3 3 V; B ) 5 0 V; C ) 6 7 V; D ) 1 0 0 V .

? _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ i s t h e a m o u n t o f e n e r g y n e e d e d t o r a i s e t h e t e m p e r a t u r e o f 1 g r a m o f m a t e r i a l b y 1 C .

The sodium channel must have be _ _ _ _ _ _ _ to attract the sodium but not the chloride ion. A negatively charged B positively charged C neutral

An approximate model of a DNA molecule is the one - dimensional freely jointed chain , in which a rigid unit of length l can make an angle of only 0 or 1 8 0 with an adjacent unit. In this case, the restoring force of a chain extended by x = nl is given by F kT 2 l 1 ln Q 1 Q Q n N where k is Boltzmann s constant, N is the total number of units,

If the index of refraction of diamond is larger than that of water, the speed of light in diamond is

You ride on an elevator that is moving with constant downward acceleration while standing on a 4 0 . 9 bathroom scale. The reading on the scale is > mg < mg mg d ) depends on the magnitude

1 . How many megajoules in 1 exajoule megajoules in 1 exajoules

The emf of the battery is 5 V , the capacitance of the capacitor is 4 F , and the resistance of each identical resistor is 1 0 . The switch has been open for a long time, then closed at = 0 . Show your work on each step. ( a ) What is the current through the numbered resistors immediately after the switch has closed?

( 1 4 % ) Problem 3 : Consider the two vectors, A = - 3 . 9 5 i + - 2 . 8 j and B = - 1 . 0 7 i + - 5 . 0 7 j . E V 2 5 % Part ( a ) What is the magnitude of C = A + B ? ICI = 9 . 3 v Correct! - A 2 5 % Part ( b ) What is the direction of C = A + B expressed in degrees above to the negative x axis? Make sure your answer is positive. 2 5 % Part ( c

What would be the formula for the total moment of inertia Itotal of the disk and ring together about the rotation axis?

The position of a particle is given by the expression x = 2 . 0 0 cos ( 6 . 0 0 t + / 2 ) , where x is in meters and t is in seconds. ( a ) Determine the frequency. Hz ( b ) Determine period of the motion. s ( c ) Determine the amplitude of the motion. m ( d ) Determine the phase constant. rad ( e ) Determine the position of the particle at t = 0

A parallel plate capacitor has plates of area 3 . 5 cm ^ 2 that are separarated by 4 . 2 mm thick sheet of dielectric which has a dielectric constant of 3 . 2 and completely fills the volume between the plates. At a point in time, there is a potential difference of 2 2 9 V across the plates and there is a conduction current of 6 . 7 mA . a )

The figure below shows a snapshot at time t = 0 s of the displacement of a wave traveling along a very long stretched string. At what time, t , in milliseconds ( ms ) , will the vertical displacement y of point 2 on the string next be equal to 0 ? ( In other words, at what time t will point 2 cross the x - axis? ) 3 . 3 5 ms 1 0 . 0 ms 6 . 6 7 ms
The figure below shows a snapshot at time t = 0 s

A 2 6 9 g object attached to a horizontal spring moves in simple harmonic motion with a period of 0 . 2 8 0 s . The total mechanical energy of the spring - mass system is 5 . 0 6 J . ( a ) What is the maximum speed of the object ( in m / s ) ? m / s ( b ) What is the spring constant ( in N / m ) ? N / m ( c ) What is the amplitude of the motion (

Which statement about magnetic poles is NOT correct? Like magnetic poles repel; unlike magnetic poles attract. Magnetic monopoles behave like isolated electric charges. Both types of magnetic pole will attract unmagnetized iron. The strengths of the two poles of a magnet are the same.
Which statement about magnetic poles is NOT

A 0 . 1 5 0 kg mass is to a spring with a spring constant of 2 . 7 N m . Your professor flicks the mass from equilibrium giving it a speed of 0 . 2 2 m s to the left. Where is the mass 1 . 6 seconds after it is flicked?
A 0 . 1 5 0 kg mass is to a spring with a spring

In Thomson's experiment on the free expansion of a gas, Thomson studied the behavior of a gas when it expands into a vacuum without any external constraints. This experiment helped illustrate important concepts in thermodynamics, such as the first law of thermodynamics and the adiabatic process. Which of the following observations best describes
In Thomson's experiment on the free expansion of

although the kinetic viscosity v has the same dimensions as any other diffusion constant, its physical meaning is quite different from the of D

Question 1 2 . 5 pts Maxwell's equations in their most popular form today combine how many laws together? 1 2 3 4
Question 1 2 . 5 pts Maxwell's equations in their

Calculate the moment of Inertia about the x - axis and y - axis as shown in the figure below.
Calculate the moment of Inertia about the x -

What would be the metric equivalent of 1 / 2 in ?

What does the term radiolucent mean? partly of wholly permeable to x - rays not permeable to x - rays completely permeable to x - rays Both A & C

A charged particled moves horizontally at a constant speed of 3 0 km / s in a region where the free fall gravitational acceleration is 9 . 8 m / s ^ 2

When an electron jumps from a Bohr orbit where n = 4 to one where n = 3 a photon is emitted. a photon is absorbed . two photons are emitted. two photons are absorbed .
When an electron jumps from a Bohr orbit where n

what are some electricity and magnetism class examples that would cause a short circuit

A 1 . 1 - kg object is suspended from a vertical spring whose spring constant is 1 2 0 N / m . ( a ) find the amount by which the spring is stretched from its unstrained length. ( b ) the object is pulled straight down by an additional distance of 0 . 2 0 m and released from rest

Two different rods of the same length are placed between the same temperature difference. Rod A has four times the thermal conductivity as rod B . For the two rods to have the same heat Q in the same time t , what should be the ratio of the diameter of rod B to rod A ?

You notice that when you drive a sound with frequency fn into a pipe, it resonates. You slowly increase the frequency and realize the next resonance is at the frequency fn + 1 = 6 5 fn . ( a ) What must the fundamental frequeny be ? ( b ) If the pipe is closed at one end, what must the length of the pipe?

When were the first atomic clocks built? Select one: a . 1 9 7 0 s b . 1 9 5 0 s c . 1 9 4 0 s d . 1 9 2 0 s Clear my choice
When were the first atomic clocks built? Select

1 5 . Write the vector form of the microscopic statement of Ohm's law.
1 5 . Write the vector form of the microscopic

A 2 - kg block is placed on a plane inclined at an angle of 3 0 to the horizontal and is counected to a spring fastened ae the try of the plane. The spring is parallel to the incline and has a ferce constant of 1 0 0 N m . The block is released from rest when the spriag las its equilibriom lezgth. If the block moves a distance of 1 0 cm befoer
A 2 - kg block is placed on a plane inclined at

Consider a particle of mass mm = 2 2 . 0 kgkg revolving around an axis with angular speed . The perpendicular distance from the particle to the axis is rr = 0 . 7 5 0 m

rue / False: If a stone is dropped with an initial gravitational potential energy of 1 0 0 J but reaches the ground with a kinetic energy of only 7 5 J , this is a violation of the principle of conservation of energy.

What is electric field? Group of answer choices The amount of electricity in a field of corn. The amount of force per charge of a charged object acting on another charged object. The amount of electric potential energy around a charged object. The amount of force per charge of a charged object acting on itself.

What is the process of mixing two different wavelengths of light to produce a new color called? Question 9 options: Diffuse reflection Specular reflection Subtracting color mixing Additive color mixing

A 1 3 . 0 g wire is placed between two magnets and when current runs through it , it is suspended. The magnetic field is 8 8 . 0 mT and the wire is 5 . 6 0 cm long inside the magnetic field. a ) Determine the nature of the two magnetic poles. Fully justify your answer.

if we should observe that a gas of these molecules emits photons whose energies are integer multiples of . . . , what should be the stiffness of the half length spring

True or false The second law of thermodynamic is consequence of the first law of thermodynamics

A bar magnet whose dipole moment is ( 0 , 0 , 6 ) Am ? has a constant velocity of ( 0 , 0 , 7 ) m / s . When the center of the magnet is at location ( 1 , 4 , 4 ) m , what is the ( vector ) electric field at location ( 1 . 0 1 , 4 , 3 ) m ?

2 9 . 3 A solenoid with a radius of 1 5 cm has 5 2 0 0 turns per meter and a current I = 2 5 A sin ( 3 7 rad / s t ) . A ring with a radius of 2 5 cm and a resistance of 0 . 5 8 is placed around the solenoid. a ) What is the magnetic field of the solenoid as a function of time? b ) What is the induced voltage as a function of time in the ring? c )

What is light diffraction? Please select the best answer from the choices below. Group of answer choices The phenomenon of subtracting vectors from each other. The phenomenon of light bending around corners. The phenom - mahna...do doo be - do - do . The phenomenon of waves superimposing on each other.

A 2 0 - cmcm - long stick of mm = 0 . 4 0 0 kgkg is lifted by a rope tied 5 . 0 cmcm from the upper end. The other end touches a smooth floor. The stick makes an angle with the floor. Find the magnitude of the normal reaction from the floor on the stick. Express your answer with the appropriate units. Activate to select the appropriates template

An optical engineer needs to ensure that the bright fringes from a double - slit are 1 5 . 7 mm apart on a detector that is from the slits. If the slits are illuminated with coherent light of wavelength 6 3 3 nm , how far apart should the slits be ? An optical engineer needs to ensure that the bright fringes from a double - slit are 1 5 . 7 mm

A hollow lightweight grooved disk whose moment of intertia is 4 . 0 e - 3 kg * m ^ 2 rotates with negligible friction around a vertical axis. Free to slide with negligible friction in the groove are two metal blocks. each with a mass of 0 . 0 7 8 kg , and they are connected to each other by a spring. At a particular moment in time ( the initial

A step - up transformer is designed so that the output of its secondary winding is 2 , 4 0 0 V ( rms ) when the primary winding is connected to a 1 7 0 V ( rms ) line voltage. ( a ) If there are 1 2 0 turns in the primary winding, how many turns are there in the secondary winding? turns ( b ) If a resistor connected across the secondary winding

3 . Two children float motionless in a space station. The 2 0 kg girl pushes the 4 0 kg boy to the right and the boy moves at 1 m / s to the right. Find the velocity ( direction and magnitude ) of the girl

An electron in a hydrogen atom makes a transition from the n = 6 energy stage to the ground state
An electron in a hydrogen atom makes a transition

An ocean wave has a height of 3 m and a period of 2 . 5 seconds. What is the energy potential of this wave.
An ocean wave has a height of 3 m and a period of

A student is conducting an experiment in which an ideal fluid flows from point A to point B in a pipe. In one of the experiments, she notices that as the ideal fluid flows from A to B , the height of the pipe decreases, and the cross - sectional area does not change. What happens to the speed of ideal fluid as it flows from A to B ? The student
A student is conducting an experiment in which an

Assume two charged particles and B are separated by a distance of r 1 . From the options below, choose the one that would result in the largest positive change in internal energy. If A has a charge of + 1 and B has a charge of - 2 while r 2 is increased to 1 . 5 r 1 . If A has a charge of + 1 and B has a charge of + 1 while r 2 is decreased to 0 .
Assume two charged particles and B are separated

A crate with a mass of 1 7 1 . 5 kg is suspended from the end of a uniform boom. The upper end of the boom is supported by the tension of 2 4 9 4 N in a cable attached to the wall. The lower end of the boom pivots at the location marked X on the same wall. Calculate the mass of the boom. You'll need to get the various positions from the graph.
A crate with a mass of 1 7 1 . 5 kg is suspended

A series circuit has an impedance of \ ( 5 8 . 0 \ Omega \ ) and a power factor of 0 . 7 2 5 at a frequency of 5 4 . 0 Hz . The source voltage lags the current. Part A What circuit element, an inductor or a capacitor, should be placed in series with the circuit to raise its power factor? inductor capacitor
A series circuit has an impedance of \ ( 5 8 . 0

Two round concentric metal wires lie on a tabletop, one inside the other. The inner wire has a diameter of 1 8 . 0 cm and carries a clockwise current of 1 1 . 0 A , as viewed from above, and the outer wire has a diameter of 3 4 . 0 cm . Part A What must be the direction ( as viewed from above ) of the current in the outer wire so that the net
Two round concentric metal wires lie on a

the loop to the wire is r = 6 . 0 0 c m . Determine the magnitude and direction of the total force on the loop. magnitude 1 . 4 2 e - 4 W h a t p h y s i c a l q u a n x away fromsical quantities determine the magnetic force produced by two straight, parallel, current - carrying wires? N direction away from the wire v
the loop to the wire is r = 6 . 0 0 c m .

displacement during a 1 . 0 s time interval? 3 . III What is the angular speed of the tip of the minute hand on a clock, in rad / s ?
displacement during a 1 . 0 s time interval? 3 .

A cylinder of gas is at room temperature ( 2 0 C ) . The air conditioner breaks down, and the temperature rises to 6 6 C . What is the new pressure of the gas 7 points relative to its initial pressure ( p 1 ) ? 0 . 1 . 1 6 P 1 1 . 3 3 3 P 1 - 6 . 6 6 P 1 d . 2 3 2 P 1
A cylinder of gas is at room temperature ( 2 0 C

An RLC series circuit has R = 1 0 0 ohms, C = 3 0 F , and 0 . 3 1 H . For what angular frequency ( in rad / s ) of an ac voltage is the current flow maximum?
An RLC series circuit has R = 1 0 0 ohms, C = 3 0

A 1 2 0 0 lb automobile travelling at 7 8 m . p . h . ( 1 1 4 . 4 f t s ) slows to 3 5 m . p . h . ( 5 1 . 3 f t s ) when the driver lightly applies the brakes over a 5 second period. Assuming the automobile decelerates at a constant rate, determine the force in l b f the brakes supply to slow the car down. Recall that 1 l b f = 3 2 . 2 l b f f t
A 1 2 0 0 lb automobile travelling at 7 8 m . p .

Two small metallic spheres, each of mass m = 0 . 3 5 g , are suspended as pendulums by light strings from a common point as shown in the figure below. The spheres are given the electric charge, and it is found that they come to equilibrium when each string is at an angle of = 5 . 5 with the vertical. If each string has length L = 2 9 . 0 c m ,
Two small metallic spheres, each of mass m = 0 .

A block of lead and a same - sized block of aluminum are submerged in water. Buoyant force is greatest on the " Is the same on each" "Lead" "Aluminum"
A block of lead and a same - sized block of

1 0 . 4 4 cdots A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 1 8 k g * m 2 . She then tucks into a small ball, decreasing this moment of inertia to 3 . 6 k g * m 2 . While tucked, she makes two complete revolutions in 1 . 0 s . If she hadn't tucked at all, how
1 0 . 4 4 cdots A diver comes off a board with

Using Kirchhoff's rules, find the following. ( 1 = 7 0 . 8 V , 2 = 6 1 . 8 V , and 3 = 7 9 . 8 V . ) ( i ) ( a ) the current ( in mA ) in each resistor shown in the figure above I R 1 = Your incorrect answer may have resulted from roundoff error. Make sure you keep extra significant figures in intermediate steps of your calculation. mA I R 2 = m A
Using Kirchhoff's rules, find the following. ( 1

Name ( print ) III. The magnetic flux through each loop of a 2 0 0 - loop coil is given by 9 . 6 e - 2 t T * * m 2 , where the time t is in seconds. ( a ) Determine the emf as a function of time. ( b ) Determine the induced current as a function of time, if for a 2 0 0 loop resistance is 1 0 . ( c ) What is emf at t = 1 . 5 s and t = 0 . 5 s ? (
Name ( print ) III. The magnetic flux through

In an insulator, the energy gap between the valence band and the conduction band is: Large Nonexistent Small
In an insulator, the energy gap between the

ment Scoring st submission is used for your score. 5 / 6 Points ] SERCPAP 1 2 6 . 4 . P . 0 4 8 . A billiard ball rolling across a table at 1 . 4 0 m s makes a head - on elastic collision with an identical ball. Find the speed of each ball after the collision when each of the following occurs. ( a ) The second ball is initially at rest. first ball
ment Scoring st submission is used for your

What is the mode number for electromagnetic standing waves in a 4 2 . 9 - cm - wide microwave oven?

A 5 kg cart has momentum of 2 0 kg . m / s . What is its velocity? Select one: a . 4 m / s b . 1 0 0 m / s c . 2 0 m / s d . 5 m / s

1 . 2 . ( 5 pts ) A ball is thrown downward at a speed of 2 0 m s . Assume that the + y axis points vertically upward and that one can neglect air resistance. Encircle the letter of each answer that correctly describes the motion of the ball and briefly explain in words any answer that does not.
1 . 2 . ( 5 pts ) A ball is thrown downward at a

Part D When a current of 0 . 2 1 8 AA is present in a wire 2 0 . 0 mm in length with cross - sectional area 8 . 1 9 1 0 7 m 2 8 . 1 9 1 0 7 m 2 , the electric field inside the wire is 6 . 5 0 1 0 3 V / m 6 . 5 0 1 0 3 V / m . What is the resistance of the wire? Express your answer with the appropriate units

What is the change in entropy of 3 . 0 kg of water at 5 0 C when it is cooled to 1 0 C ? The specific heat of water is 1 . 0 cal / kg C . 0 . 2 7 cal / K 0 . 4 0 cal / K - 0 . 4 0 cal / K - 0 . 2 7 cal / K

In a refinery, the components of petroleum are separated by

A rectangular shaped barge is floating on a lake. The barge has a mass of 2 0 0 0 kg and a total volume of 3 0 . 0 m 3 . The density of the lake water is 1 0 0 0 kg / m . The top area of the barge is 9 . 0 m a . How many meters deep under the water is the bottom of the barge? Several people in a line start to walk onto the barge. If each person

A circular loop of radius 1 1 . 8 cm is placed in a uniform magnetic field. ( a ) If the field is directed perpendicular to the plane of the loop and the magnetic flux through the loop is 7 . 9 0 1 0 3 T m 2 , what is the strength of the magnetic field? T ( b ) If the magnetic field is directed parallel to the plane of the loop, what is the

What is the resistance of a 1 . 2 mm - long copper wire that is 0 . 4 0 mm in diameter?

Calculate the error of area calculation ( in square ft . ) of a square piece of land with area of 8 4 7 ft 2 in which lengths are measured with uncertainty of 0 . 1 0 ft .

A 2 5 . 3 5 resistor is carrying a current of 2 . 8 3 A .

If the electrical potential energy of two point charges is UU when they are a distance dd apart, their potential energy when they are fourfold as far apart will be U / 1 6 U / 1 6 . U / 4 U / 4 . 4 U 4 U . 1 6 U 1 6 U .

A cylinder with a piston holds 4 . 0 0 moles of a diatomic gas. The gas in the cylinder absorbs 9 3 5 J of energy due to the higher temperature of the environment. At the same time, the cylinder expands to a larger volume, doing 1 1 7 J of work on the environment. ( a ) What is the change in internal energy of the gas in the cylinder ( in J ) ? J

you are preparing to coordinate a crane lift for a 1 5 - foot segment of a beam designated as W 2 4 X 1 3 5 . the crane can lift a maximum load of one ton and its rigging only allows height of the load to be 1 8 " max. can the crane lift the load? explain. can i lift the load if i increase the crane capacity to 2 tons but use the same rigging?

Assume the length of a newborn's eyeball to be 1 . 8 4 cm . a ) What is the effective focal length of the two - lens system made from a normal a newborn's cornea and lens when viewing objects far away. Tries 0 / 2 0 b ) What is the effective focal length for viewing objects at the near point ( = 2 5 . 0 cm ) .

the distance from the center of a ferris wheel to a passenger seat is 1 2 m . What centripetal acceleration, in m / s ^ 2 , does a passenger experience when the wheels angular speed is 0 . 7 rad / s

When two tuning forks with frequencies 7 4 2 Hz and 7 6 6 Hz are sounded together beats are produced. What is the beat frequency?

Counting how often the peaks of a sound wave pass a microphone is a measure of the wave's: a . amplitude. b . frequency. c . complexity. d . decibel level.

A 2 0 0 - turn solenoid is 2 0 . 0 cm long and carries a current of 3 . 2 5 A .

A spaceship makes the long trip from earth to the nearest star system, Alpha Centauri, at a speed of 0 . 9 4 5 cc . The star is about 4 . 3 7 light - years from earth, as measured in earth s frame of reference.

A cord is wrapped around the rim of a solid uniform wheel 0 . 2 8 0 mm in radius and of mass 7 . 6 0 kgkg . A steady horizontal pull of 3 6 . 0 NN to the right is exerted on the cord, pulling it off tangentially from the wheel. The wheel is mounted on frictionless bearings on a horizontal axle through its center.

1 4 . 1 0 When a 0 . 7 5 0 kg mass oscillates on an ideal spring, the frequency is 1 . 7 5 Hz . What will the frequency be if 0 . 2 2 0 kg are ( a ) added to the original mass and ( b ) subtracted from the original mass? Try to solve this problem without finding the force constant of the spring.

Sound waves travel the fastest in which of the following materials? Question 1 3 options: air water steel All travel with the same speed in the materials listed.

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