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Physics Questions and Answers September 11, 2019

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While Galileo did not invent the telescope, he was the first known person to use it astronomically, beginning around 1 6 0 9 . Five of his original lenses have survived ( although he did work with others ) . Two of these have focal lengths of 1 7 5 0 mm and 9 6 8 mm . How long would this telescope be between the two lenses?

1 . It is greatest for process 3 . \ ( \ times 2 \ ) . It is the same for process 2 and 3 and less for process 1 . 3 . It is the same for all three processes. 4 . It is greatest for process 1 . 5 . It is the same for process 1 and 2 and less for process 3 . 1 . It is greatest for process 1 . 2 . It is the same for processes 1 and 2 . 3 . It is
1 . It is greatest for process 3 . \ ( \ times 2

What force is required to prevent the package below from sliding down the incline?
What force is required to prevent the package

Express the angular displacement of the ball while it was in circular motion in terms of Pi radians

An airplane has rest length 4 0 . 0 m and speed 6 3 0 m / s . To a ground observer, ( a ) by what fraction is its length contracted and ( b ) how long is needed for its clocks to be 1 . 0 0 s slow?

A coil of 3 0 turns is wrapped around a long solenoid of cross - sectional area 7 . 0 1 0 3 m 2 . The solenoid is 0 . 4 0 m long and has 3 0 0 turns. ( a ) What is the mutual inductance of this system ( in H ) ? H ( b ) The outer coil is replaced by a coil of 3 0 turns whose radius is three times that of the solenoid. What is the mutual inductance

A house has well - insulated walls 1 6 . 1 cm thick ( assume conductivity of air ) and area 4 3 8 m 2 , a roof of wood 6 . 4 3 cm thick and area 2 7 9 m 2 , and uncovered windows 0 . 6 8 4 cm thick and total area 3 3 . 1 m 2 . Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to

A rigid square - shaped frame is constructed from four rods, each of mass m and length 0 . 5 0 m . The rod rotates about the axis shown in the sketch and the moment of inertia about this axis is 1 . 2 5 k g m 2 . ( a ) Find the mass, m of each rod. ( b ) Find the torque relative to the rotation axis that will cause the frame to go from rest to
A rigid square - shaped frame is constructed from

Light of wavelength 6 6 9 nm is incident on a double slit. The angle between the central bright fringe and the second dark fringe is 4 . 9 0 . Determine the separation d of the slits. d = Number Units m
Light of wavelength 6 6 9 nm is incident on a

When a fish suspending in the middle of a water tank, the weight of the fish is less than the buoyant force acting on the fish. more than the buoyant force acting on the fish. equal to the buoyant force acting on the fish. None of the above.
When a fish suspending in the middle of a water

QUESTION 5 . You need to control yellow nutsedge and annual grass weeds in a nursery that produces woody landscape plants in containers. To do this, you will apply Pennant Magnum ( 7 . 6 2 lb a . i . per gallon ) at a rate of 2 . 0 pt per acre. Your sprayer delivery rate will be 2 0 gallons per acre. The container - grown landscape plants are in
QUESTION 5 . You need to control yellow nutsedge

ecespowerd AP PHYSICS C: MECHANICS Unit 2 Progress Check: FRQ Show all your work for each part of the question. The parts within the question may not have equal weight. Figure 1 A small sphere of mass m is launched straight upward from the top of a high cliff, as shown in Figure 1 , with an initial speed v 0 at time t = 0 . The air exerts a
ecespowerd AP PHYSICS C: MECHANICS Unit 2

What is the Bohr radius for the n = 4 state of an electron orbiting a neutral Hydrogen atom? 5 . 2 9 1 0 - 1 1 m 4 . 7 6 1 0 - 1 0 m 8 . 4 6 1 0 - 1 0 m 2 . 1 1 1 0 - 1 0 m
What is the Bohr radius for the n = 4 state of an

What is the impulse along the incline caused by the weight?

E BIO The drawing shows an intravenous feeding. With the distance shown, nutrient solution ( = 1 0 3 0 k g m 3 ) can just barely enter the blood in the vein. What is the gauge pressure of the venous blood? Express your answer in millimeters of mercury. PROBLEM 2 4
E BIO The drawing shows an intravenous feeding.

A spaceship is moving between two distant stars at 0 . 9 3 2 c . To someone in the ship, the distance between the two stars appears to be to be 2 6 . 9 light - years ( ly ) . What is the distance between the stars in the rest frame of the stars? A ) 9 . 7 5 ly B ) 2 1 . 5 ly C ) 4 1 . 3 ly D ) 5 6 . 5 ly

Two coils are wound around the same cylindrical form. When the current in the first coil is decreasing at a rate of - 0 . 2 4 0 A / sA / s , the induced emf in the second coil has a magnitude of 1 . 6 5 1 0 3 VV . What is the mutual inductance of the pair of coils? If the second coil has 2 0 turns, what is the flux through each turn when the

A coil has 1 7 0 turns enclosing an area of 1 0 . 7 cm 2 . In a physics laboratory experiment, the coil is rotated during the time interval 0 . 0 4 2 s from a position in which the plane of each turn is perpendicular to Earth's magnetic field to one in which the plane of each turn is parallel to the field. The magnitude of Earth's magnetic field

The magnetic field of an electromagnetic wave is described by B y = B 0 c o s ( k x - t ) , where B 0 = 7 . 5 1 0 - 6 T and = 2 . 5 1 0 7 r a d s . Randomized Variables B 0 = 7 . 5 1 0 - 6 T = 2 . 5 1 0 7 r a d s
The magnetic field of an electromagnetic wave is

A wire with length L , total mast M , and linear density = 2 Mx / L ^ 2 occupies the x axis from x = 0 to L . A point mass m 0 is placed at x 0 > L . Determine the net gravitational force F acting A wire with length L , total mast M , and linear density = 2 Mx / L ^ 2 occupies the x axis from x = 0 to L . A point mass m 0 is placed at x 0 > L .

A disk, with a radius of 0 . 2 5 m , is to be rotated like a merry - go - round through 8 0 0 rad, starting from rest, gaining angular speed at the constant rate a 1 through the first 4 0 0 rad and then losing an - gular speed at the constant rate % a 1 until it is again at rest. The mag - nitude of the centripetal acceleration of any portion of

A block with mass m = 3 . 6 3 is placed against a spring on a frictionless incline with angle = 3 9 . 1 degrees. The spring, with spring constant k = 1 9 N / cm , is compressed 2 4 . 9 cm and then released. ( a ) What is the elastic potential energy of the compressed spring? ( b ) What is the change in the gravitational potential energy of the

Which of the following wave functions describes a wave that moves in the positive x - direction? A ) y ( x , t ) = Asin ( kx + tot ) . B ) y ( x , t ) = Asin ( kx rot ) . C ) y ( x , t ) = Acos ( kx + tot ) . D ) both B and C . E ) all of A , B , and C .

Question 1 An electron moving parallel to the x axis has an initial speed of 3 . 7 0 1 0 6 m s at the origin. Its speed is reduced to 1 . 4 0 1 0 5 m s at the 8 Mata point x = 2 . 0 0 c m . a ) Calculate the electric potential difference between the origin and that point. ( 4 Marks ) b ) Which point is at the higher potential? ( 2 Marks ) &
Question 1 An electron moving parallel to the x

A gas in a container is at a constant temperature T . T . The molecules have two vibrational energy states, the higher of which has energy 0 . 8 8 kBT . 0 . 8 8 kBT . There are 3 0 0 0 molecules in this higher energy state and approximately 5 5 0 0 in the lower state. What is the energy of the molecules in the lower state?

3 . A swimmer needs to swim from a point on the beach to a floating platform 5 0 m directly across from the shore. They can swim at a speed of \ ( 4 \ mathrm { ~km } / \ mathrm { h } \ ) in calm water. The lake has a \ ( 2 \ mathrm { ~km } / \ mathrm { h } \ ) current that runs parallel to the shore. If they want to swim straight across to the
3 . A swimmer needs to swim from a point on the

I increase my distance from a noise source by 1 2 meters. If my original distance from the source was 6 meters, what is the noise's intensity in terms of initial intensity? How does the decibel level change?

Two sprinters leave the starting gate at the same time at the beginning of a straight track. The mass of the first sprinter is m 1 = 5 4 . 6 kgm 1 = 5 4 . 6 kg , and the mass of the second sprinter is m 2 = 6 7 . 8 kgm 2 = 6 7 . 8 kg . A . ) A few seconds later, the first sprinter is ahead of the second by a distance of 5 . 9 2 m 5 . 9 2 m . How

Question 3 ( 1 point ) The objects have the same angular momentum. Object one has twice the moment of inertia than the second. The angular velocity of the first object has the angular velocity of the second object. times a ) 1 2 b ) 1 2 2 c ) 2 d ) 2 2
Question 3 ( 1 point ) The objects have the same

Part 2 : The cylinder is at rest on the incline when you begin to pull the end of the belt up the plane with a constant force of magnitude F that is t wice the force that you exerted to hold the cylinder in place ( F = 2 F ) . That larger force causes the cylinder to roll up the incline without slipping. Part 1 : Determine the magnitude of the

What is the moment of inertia of the cylinder, I c , in terms of some or all of the following: M , H , and R ?
What is the moment of inertia of the cylinder, I

While riding at constant horizontal velocity vbike on your bike, you toss your keys vertically up in the air ( as viewed in your reference frame ) with speed v 0 . If you don t move your hand after tossing the keys, will they land right back in your hand or in front of or behind your hand? ( Reflect air resistance. ) Explain your answer from the

lestion 1 A Chihuahua dog moves in uniform circular motion in a horizontal xy plane. When the dog passes through the point at coordinates ( 3 . 0 0 m , - 3 . 0 0 m ) , its velocity is 8 . 0 hat ( j ) m s and its acceleration is - 1 2 . 0 hat ( i ) m s 2 . What is the period ( s ) of the circular motion? a ) 9 . 2 0 b ) 3 . 1 7 c ) 2 . 4 9 d ) 4 .
lestion 1 A Chihuahua dog moves in uniform

( a ) Calculate the momentum ( in k g * m s ) of a photon having a wavelength of 8 . 5 8 m . k g * m s ( b ) Find the velocity ( in m s ) of an electron having the same momentum. m s ( c ) What is the kinetic energy ( in J ) of the electron? J How does it compare with the energy of the photon? E p h o t o n K E e l e c t r o n =
( a ) Calculate the momentum ( in k g * m s ) of

A skater is initially spinning at a rate of 1 0 . 0 r a d s with a rotational inertia of 3 . 8 0 k g * m 2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces her rotational inertia to 1 . 6 0 k g * m 2 ? rad / s
A skater is initially spinning at a rate of 1 0 .

Three objects are connected by light strings as shown in the figure below. The string connecting the m 1 = 5 . 8 5 - k g object and the m 2 = 3 . 8 5 - k g object passes over a light frictionless pulley. ( a ) Determine the acceleration of each object. object m 1 , magnitude object m 1 , direction Your response differs from the correct answer by
Three objects are connected by light strings as

A 0 . 0 2 kg object is launched vertically by using a spring with k = 1 0 5 N m . The spring is compressed by Dy = 1 0 c m from the equilibrium position of the system spring and mass, see figure. Determine the maximum height reached by the object. ( Neglect friction and consider g = 9 . 8 0 m s 2 . ) Select one:a . 5 . 3 6 mb . 2 . 7 8 mc . 6 . 8
A 0 . 0 2 kg object is launched vertically by

What is the angular speed , in r a d s , of an object that completes 4 . 0 0 rev every 1 4 . 0 s ? =
What is the angular speed , in r a d s , of an

What is the intensity of a sound at the pain level of 1 2 0 dBdB ? Compare it to that of a whisper at 2 0 dBdB .

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. For points INSIDE the loop, the magnetic field caused by this current points straight up . circles the looptn a clockwise direction. circles the loop in a counterclockwise direction. is zero. points
A current carrying loop of wire lies flat on a

Explain why an open record is generally considered to be good practice ( you must explain at least two reasons )

When should you run a capacitor in a circuit quizlet multiple

What is the resistance of a 1 . 1 - mm - long axon?

An ion having charge + 6 ee is traveling horizontally to the left at 8 . 5 0 km / skm / s when it enters a magnetic field that is perpendicular to its velocity and deflects it downward with an initial magnetic force of 5 . 9 4 1 0 1 5 5 . 9 4 1 0 1 5 NN .

When the standing wate pattern in a pipe is NANA, the pipe las which of the foilowing set of properties? ( N slands for node, A for antimode. )
When the standing wate pattern in a pipe is NANA,

Current Attempt in Progress Speedboat A negotiates a curve whose radius is 1 1 1 m . Speedboat B negotiates a curve whose radius is 2 9 2 m . Each boat experiences the same centripetal acceleration. What is the ratio v A v B of the speeds of the boats? Number Units
Current Attempt in Progress Speedboat A

Review Constants An electron experiences a force vec ( F ) = ( 4 . 5 i - 3 . 5 j ) 1 0 - 1 3 N when passing through a magnetic field vec ( B ) = ( 0 . 7 6 T ) k . Part A Determine the electron's velocity. Express your answers using two significant figures. Enter your answers numerically separated by commas. v x , v y = m / s Previous Answers
Review Constants An electron experiences a force

Unpolarized light of intensity I 0 = 1 1 0 0 W / m 2 is incident upon three polarizers. The axis of the first polarizer is vertical. The axis of the second polarizer is rotated at an angle = 3 5 from the vertical. The axis of the third polarizer is horizontal. Part ( d ) Write an equation for the intensity of light after it has passed through all

A 4 . 5 0 kg mass is attached to a 1 . 2 0 m long string and swung in a vertical loop. a ) What is the slowest speed the mass can be moving and still make it over the top of the loop? Assuming this speed is initially constant find the period and frequency of the mass' revolutions. b ) If the mass' speed then doubles from part ' a ' what will be

on a hot summer day, the density of air at atmospheric pressure is 3 4

The displacement of a standing wave on a string is given by D = 4 . 0 sin ( 0 . 6 2 x ) cos ( 5 4 t ) D = 4 . 0 sin ( 0 . 6 2 x ) cos ( 5 4 t ) , where xx and DD are in centimeters and tt is in seconds.

A mass is attached to a vertical spring ( with a spring constant of kk ) when the spring is at its equilibrium length without the mass attached. The mass is released from rest from this position, and begins to undergo simple harmonic motion. You measure the total energy of the system to be 6 2 0 J 6 2 0 J . If you followed an identical procedure

An astronaut drops a marble on the surface of the airless Planet Z - 4 9 and observes that it takes 1 . 0 2 s for the marble to fall 2 . 0 0 m starting from rest. She also knows that the radius of Z - 4 9 is 3 . 3 9 1 0 6 m . From this information, what will she determine for the mass of Z - 4 9 ? ( G = 6 . 6 7 1 0 - 1 1 N m 2 / kg 2 ) 3 . 3 0 kg

The rotating loop in an ac generator is a square 1 0 . 0 cm on a side. It is rotated at 5 0 . 0 Hz in a uniform field of 0 . 8 0 0 T . Calculate the following quantities as functions of time t , where t is in seconds. ( a ) the flux through the loop B = mT m 2 ( b ) the emf induced in the loop = V ( c ) the current induced in the loop for a loop

A block of mass m = 0 . 7 5 kg is fastened to an unstrained horizontal spring whose spring constant is k = 8 2 . 0 N / m . The block is given a displacement of + 0 . 1 2 m , where the + sign indicates that the displacement is along the + x axis, and then released from rest. ( a ) ( i ) What is the force ( magnitude and direction ) that the spring

What is the magnitude of the velocity of a 4 0 0 0 kgkg truck with momentum p p = 5 . 0 5 . 0 1 0 4 1 0 4 i ^ kgm / si ^ kgm / s ? Express your answer with the appropriate units. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to

One possible concern with MRI ( magnetic resonance imaging ) is turning the magnetic field on or off too quickly. Bodily fluids are conductors, and a changing magnetic field could cause electric currents to flow through the patient. Suppose a typical patient has a maximum cross - section area of 6 . 0 1 0 2 m 2 m 2 .

Write down a system of differential equations to model the behavior of the spring mass system shown below. The masses are m 1 and m 2 and the spring constants are k 1 and k 2 . Assume that friction and air resistance are negligible. ( You do not need to solve the resulting system of equations. )
Write down a system of differential equations to

Part A For a capacitor in an AC circuit, the current and voltage are in phase are \ ( 9 0 ^ { \ circ } \ ) out of phase are \ ( 1 8 0 ^ { \ circ } \ ) out of phase have a phase difference that increases with increasing frequency have a phase difference that decreases with increasing frequency
Part A For a capacitor in an AC circuit, the

Newton's Law of Gravitation The gravitational force between two objects is inversely proportional to the square of the distance between them. How does the gravitational force between two objects change if the distance between them is ( a ) tripled? ( b ) halved?
Newton's Law of Gravitation The gravitational

Conclusions: What is the point of these measurement activities? Are there forces that do not contribute to the calculation of torque?
Conclusions: What is the point of these

A thermodynamic process is conducted wherein an ideal gas is taken from State A to B to C to D to A . State A is at a pressure P and a volume 5 V . State B is at pressure 4 P and volume V . State C is at pressure 4 P and volume 4 V . State D is at pressure 2 P and volume 1 0 V . Which step in the process requires the largest change in internal
A thermodynamic process is conducted wherein an

A diffraction grating has 4 5 , 0 0 0 slits / cm . What is the distance between adjacent slits? 1 . 0 cm 2 . 2 cm 2 . 2 1 0 - 5 c m None of these. X - rays diffract from crystalline matter because... The wavelength of the X - rays is comparable to the atomic spacing in matter. The wavelength of the x - rays is much shorter than the atomic spacing
A diffraction grating has 4 5 , 0 0 0 slits / cm

An alien spaceship traveling at 0 . 5 6 0 c toward the Earth launches a landing craft. The landing craft travels in the same direction with a speed of 0 . 7 3 0 c relative to the mother ship ( as measured by aliens on the mother ship ) . As measured on the Earth, the spaceship is 0 . 2 5 0 ly from the Earth when the landing craft is launched. ( a

A rubber bullet with the same mass is now used in the experiment. It is fired at the dummy - vest system with the same initial speed, but in this case, when it hits the vest, it bounces off and moves backwards in the opposite direction. Which of the following is true about the magnitude of the force delivered by the rubber bullet to the vest, when
A rubber bullet with the same mass is now used in

Total internal reflection has important applications in fibre optic surgery. A long, narrow optical fibre is used in microsurgery for lessening trauma and the chance of infection, and for reducing the healing period. Light within an optical fibre undergoes total internal reflection hundreds of thousands of times without escaping. The critical
Total internal reflection has important

Question 1 6 1 0 pts What is the escape speed on the surface of Neptune? ( the mass of Neptune is 1 . 0 2 1 0 2 6 k g and the radius of Neptune is 2 . 4 8 1 0 7 m ) 7 . 4 1 0 3 m s 3 . 1 1 0 5 m s 2 . 3 1 0 4 m s 4 . 2 1 0 4 m s 1 . 1 1 0 4 m s
Question 1 6 1 0 pts What is the escape speed on

Thrust a magnet into a coil of wire and you'll induce

Compute the frequency and megahertz of an AM wave with a wavelength of 3 . 2 inches ( 0 . 0 8 1 3 )

A 2 7 . 8 kg beam is attached to a wall with a hinge and its far end is supported by a cable. The angle between the beam and the cable is 9 0 o . If the beam is inclined at an angle of = 1 6 . 8 with respect to horizontal.

In more than one of the Apollo mission Moon landings, the landing craft had to hover above the surface while moving horizontally, looking for a suitable landing surface. Suppose the lander had fuel equivalent to 1 0 % of its mass for this purpose, with an exhaust velocity of 4 0 0 m / s . What was the maximum possible hovering time? Note: gMoon =

Can an expert take a look

A potter's wheel moves uniformly from rest to an angular velocity of 1 . 0 0 rev / s in 3 0 . 0 s . ( a ) Find its angular acceleration in radians per second per second. ( b ) Would doubling the angular acceleration during the given period have doubled final angular velocity?

A uniform horizontal strut weighs 4 4 0 . 0 N . One end of the strut is attached to a hinged support at the wall, and the other end of the strut is attached to a sign that weighs 2 3 0 . 0 N . The strut is also supported by a cable attached between the end of the strut and the wall. Assume that the entire weight of the sign is attached at the very

The time to fully roast a turkey tc is assumed to depend on the thermal diffusivity of its flesh k ( [ k ] = L ^ 2 T ^ 1 ) , the average mass density of the turkey ( [ ] = ML ^ 3 ) , a representative lengthscale l ( [ l ] = L ) for the turkey, the temperature difference between the raw turkey flesh and the oven Tr ( [ Tr ] = ) , and the

Attempt 3 A person pushing a horizontal, uniformly loaded, 2 7 . 8 0 kg wheelbarrow of length L is attempting to get it over a step of height h = 0 . 3 9 0 R , where R is the wheel's radius. The center of gravity of the wheelbarrow is in the center of the wheelbarrow. What is the horizontal component P z of the minimam force vec ( p ) necessary to
Attempt 3 A person pushing a horizontal,

A ball with a mass 0 . 2 2 kg 0 . 2 2 kg is thrown with an initial velocity of 2 1 . 6 m / s 2 1 . 6 m / s at an angle of 3 4 . 7 3 4 . 7 above horizontal.

Light emitted by element X passes through a diffraction grating that has 1 2 0 0 slits / mm . The interference pattern is observed on a screen 7 5 . 0 cm behind the grating. First - order maxima are observed at distances of 5 9 . 4 cm , 6 6 . 1 cm , and 9 1 . 4 cm from the central maximum. What are the wavelengths of light emitted by element X ?

A 5 . 7 1 kg object on a horizontal frictionless surface is attached to a spring with k = 1 0 2 0 N / m . The object is displaced from equilibrium 7 0 . 9 cm horizontally and given an initial velocity of 1 0 . 2 m / s back toward the equilibrium position, What are ( a ) the motion's frequency, ( b ) the initial potential energy of the block -

A plastic dowel has a Young s modulus of 1 . 5 0 1 0 1 0 N / m 2 . Suppose the ankle breaks if more than 1 . 5 0 1 0 8 N / m 2 is exerted. ( a ) What is the maximum force ( in kN ) that can be applied to the stud assuming a diameter of 2 . 3 0 cm ? ( b ) If a force of this modulus is applied in compression, by how much ( in mm ) does the 2 7 . 0

The volume of air that must be moved by a loudspeaker cone radiating 0 . 1 0 W of acoustical power at 5 0 Hz = cm 3 . [ See Fig. 1 9 . 3 in Rossing, page 4 2 4 . ] To displace this volume, the cone of 1 2 - inch ( 3 0 cm ) diameter speaker would have to move axially cm . The first blank is not 4 . 8 4

A galvanometer with a coil resistance of rg = 2 4

The magnetic field of a circular coil of conducting wire at a point 4 0 cm from its center on an axis that passes through the center that is perpendicular to the plane of the coil is 2 0 T . The coil has a radius of 2 . 5 cm . a ) What is the magnetic dipole moment of the coil? b ) What is the magnetic field at the center of the coil? c ) If the

Helium gas expands slowly to twice its original volume, doing 7 5 0 JJ of work in the process. Find the heat added to the gas if the process is isothermal. Express your answer in joules.Find the change in internal energy of the gas if the process is isothermal. Express your answer in joules. Find the heat added to the gas if the process is

Problem 3 . In this problem, we aim to justify the term conservative for gradient fields. A gradient field F is called conservative because it conserves the total energy of a mass mas it moves within the field. Recall that the total energy is defined as: E = K + U = 1 2 m jvj 2 + U; where K represents the kinetic energy, v the velocity of m , and

The Sun s mass is 2 . 0 1 0 3 0 kg , its radius is 7 . 0 1 0 5 km , and it has a rotational period of approximately 2 8 days. If the Sun should collapse into a white dwarf of radius 3 . 5 1 0 3 km , what would its period be if no mass were ejected and a sphere of uniform density can model the Sun both before and after?

Part A A spring - mass system is undergoing simple harmonic motion of amplitude 2 . 1 cm and angular frequency 1 0 . 4 s - 1 . The magnitude of the maximum acceleration of the mass as it oscillates back and forth is 0 . 0 0 m s 2 . 0 . 2 0 m s 2 . 2 . 2 7 m s 2 . 1 4 . 3 m s 2 . Provide Feedback
Part A A spring - mass system is undergoing

The Heat Transfer Vector, &What is always true about & for heat conduction?

/ R . 6 - 8 Why cannot the B - field of an infinitely long, straight, current - carrying conductor have a component in the direction of the current?
/ R . 6 - 8 Why cannot the B - field of an

Two solid blocks of identical size are submerged in water. One block is lead and the other is aluminum. Upon which is the buoyant force greater? On the aluminum block. Same on both Block On the lead block. There is not enough information to decide. None of the above Question 1 3 2 1 . A fish normally displaces its own Weight of water. Both of
Two solid blocks of identical size are submerged

A ball whose mass is 0 . 1 kg hits the floor with a speed of 5 m / s and rebounds upwards with a speed of 4 m / s . If the ball was in contact with the floor for 2 ms . What was the average magnitude of force exerted on the ball by the floor

The burden of proving donative intent rests with

Part A A string of length 0 . 7 4 0 m is vibrating at 1 2 0 Hz in its second harmonic and producing sound that moves at 3 4 0 m s . What is true about the frequency and wavelength of this sound? Select all that apply. The wavelength of the sound is 2 . 8 3 m The wavelength of the sound is 0 . 7 4 0 m . The frequency of the sound is 1 2 0 Hz . The
Part A A string of length 0 . 7 4 0 m is

what is average speed of hare and average speed of tortoise both answers rounded to nearest tenth
what is average speed of hare and average speed

When resting, a person has a metabolic rate of about 8 . 3 2 0 1 0 5 joules per hour. The person is submerged neck - deep into a tub containing 3 . 9 3 0 1 0 3 k g of water at 2 8 . 6 0 C . If the heat from the person goes only into the water, find the water temperature in degrees Celsius after half an hour. Number Units
When resting, a person has a metabolic rate of

A current of 1 8 . 0 mA is maintained in a single circular loop of 1 . 2 0 m circumference. A magnetic field of 0 . 4 0 0 T is directed parallel to the plane of the loop.

the work done by three moles of monatomic ideal gas ( = 5 / 3 ) in expanding adiabatically is 8 2 0 J . The intial tmperature and volume of the has are 3 6 0 K and 0 . 1 1 0 m ^ 3 . What is the final volume of the gas? ( hint: for an adiabatic process = >

3 ) LABORATORY QUESTION A setup to determine the moment of inertia using energy conservation includes a pulley with a radius \ ( r = 2 \ mathrm { ~cm } \ ) attached under a reference table. A string is wound around the pulley, with a mass of 1 0 g attached to the string's end. The string passes over an massless and frictionless pulley and hangs
3 ) LABORATORY QUESTION A setup to determine the

Two gas - filled tanks have the same volume, temperature, and pressure. They are identical in every way except that one is filled with oxygen ( O 2 ) gas and the other is filled with nitrogen ( N 2 ) gas. Which container weighs more?
Two gas - filled tanks have the same volume,

The magnetic field in a solenoid is \ ( B = \ left ( \ mu _ { 0 } N I \ right ) / d \ ) . A circular wire of radius 8 cm is concentric with a solenoid of radius 3 cm and length \ ( d = 2 \ ) meter, containing 1 2 0 0 0 turns. The current increases at a rate of \ ( 4 8 \ mathrm { ~A } / \ mathrm { s } \ ) . Part 1 - Your answer is incorrect. What
The magnetic field in a solenoid is \ ( B = \

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