Stationary waves are also called

A. static waves

B. standing waves

C. progressive waves

D. All of the above

1 Answer

Answer :

standing waves


Related questions

Description : Energy is not carried by (a) Transverse progressive waves (b) Longitudinal progressive waves (c) Stationary waves (d) Electromagnetic waves

Last Answer : Ans:(c)

Description : What do you mean by standing or stationary waves?

Last Answer : A standing wave is a wave produced by interference between twomoving waves of the same frequency (usually an original wave andits reflection) which does not move but continues to oscillate atthe original frequency.

Description : The passengers standing in a bus fall in the backward direction when the stationary bus begins to move. Which of the following laws explains this situation? (1) Newton's First Law of Motion (2) Newton's Third Law of Motion (3) Newton's Second Law of Motion (4) The Law of Conservation of Momentum

Last Answer : (1) Newton's First Law of Motion Explanation: According to Newton's first law of motion (law of inertia) a body either at rest or in uniform motion will remain so unless acted on by a force When the passengers are standing on the bus, they (and the bus) are in a state of uniform motion.

Description : Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4 sin 600 t and y2 = 5 sin 608 t. An observer located near these two sources of sound will ... between waxing and waning (4) 8 beats per second with intensity ratio 81 : 1 between waxing and waning

Last Answer : (1) 4 beats per second with intensity ratio 81 : 1 between waxing and waning

Description : Stationary wave is formed by – (1) a transverse wave superposing a longitudinal wave (2) two waves of the same speed superposing (3) two waves of same frequency travelling in the same direction (4) two waves of same frequency travelling in the opposite direction

Last Answer : (4) two waves of same frequency travelling in the opposite direction Explanation: Stationary or standing waves are formed in a medium when two waves having equal amplitude and frequency moving in ... and the reflected wave. Both longitudinal and transverse types of waves can form a stationary wave.

Description : In the formation of stationary waves, at T⁄2 the waves are A. out of phase B. in phase C. diminished D. twice the amplitude

Last Answer : . in phase

Description : Speed of stationary waves is A. 1 m s-1 B. 2 m s-1 C. 3 m s-1 D. zero

Last Answer : zero

Description : Stationary wave is formed by (1) a transverse wave superposing a longitudinal wave (2) two waves of the same speed superposing (3) two waves of same frequency travelling in the same direction (4) two waves of same frequency travelling in the opposite direction

Last Answer : two waves of same frequency travelling in the opposite direction

Description : Standing waves are formed when two sets of waves of equal amplitude and frequency w) are in phase x) are in opposite phase y) move through each other in opposite directions z) are reflected from the same surface

Last Answer : ANSWER: Y -- MOVE THROUGH EACH OTHER IN OPPOSITE DIRECTIONS 

Description : Two progressive transverse waves are described by : `y_(1) = 3.0 cm sin [(4x-700t)rad]` and `y_(2) = 3.0 cm sin [(4x-700t - pi//3) rad]`.

Last Answer : Two progressive transverse waves are described by : `y_(1) = 3.0 cm sin [(4x-700t)rad]` and ... wave D. The particle will be oscillating in xy-plane.

Description : Can a static magnet induce an e.m.f in a stationary coil of wire? Give reasons.

Last Answer : No, when both coil and magnet are stationary, the magnetic field linked with the coil remains constant. Only when the magnetic field linked with the coil changes, current is produced.

Description : The static load is defined as the load acting on the bearing when the shaft is _____. (a) stationary (b) rotating at rpm

Last Answer : (a) stationary

Description : Static load is defined as the load acting on the bearing when shaft is _____ a) Stationary b) Rotating at rpm

Last Answer : a) Stationary

Description : The electrons in the outermost orbit of atom are: a) Valance electrons b) Static electrons c) Tightly bound d) Stationary

Last Answer : a) Valance electrons

Description : State four characteristics of stationary waves.  

Last Answer : Characteristics :  i) It is superposition of two progressive waves moving in opposite direction in a medium.  ii) There is no transfer of energy in a medium.  iii) Nodes and antinodes ... nodes or antinodes is λ/2.  vii)The distance between two successive nodes and antinodes is λ/4.

Description : Do all points on standing waves vibrate with same amplitude?

Last Answer : Feel Free to Answer

Description : The presence of standing waves on a transmission line is the result of A. a high level of attenuation on the line. B. terminating the line by a resistive load equal in value to the surge impedance ... input power to below its critical level. D. an impedance mismatch between the load and the line.

Last Answer : D. an impedance mismatch between the load and the line.

Description : What do you call the energy that was not radiated into space or completely transmitted? A. Incident waves B. Captured waves C. Standing waves D. Modulated waves

Last Answer : C. Standing waves

Description : Energy that has neither been radiated into space nor completely transmitted. A. Captured waves B. Incident waves C. Standing waves D. Modulated waves

Last Answer : C. Standing waves

Description : Standing waves occurs due to a) Impedance match b) Impedance mismatch c) Reflection d) Transmission

Last Answer : b) Impedance mismatch

Description : . A non-resonant line is a line that has no standing waves of current and voltage on it and is considered to be flat. Why is this true?

Last Answer : The load impedance of such a line is equal to Z0.

Description : At what frequency compared to the cutoff frequency of a waveguide will the wavefronts be reflected back and forth across the guide (setting up standing waves) and no energy

Last Answer : UHF receiving antenna

Description : With what a met phenomenon is wind shear most associated? a. Thunderstorms b. Passage of a warm front c. Tropical revolving storms d. Standing mountain waves

Last Answer : a. Thunderstorms

Description : Define VSWR with refernce to standing waves.

Last Answer : Voltage Standing Wave Ratio: The voltage standing wave ratio (VSWR) is the ratio of max voltage to min voltage. VSWR= VMAX /VMIN

Description : Draw waveform for standing waves on an open and shorted line. Prove that impedance is inverted at every quarter wavelength interval.

Last Answer : Waveform- Explanation When the transmission line is short circuited voltage is zero and current is maximum.The variation is according to the wavelength. When the ... The pattern repeats for every half wavelength. Thus impedance is inverted at every quarter wavelength interval.

Description : Explain standing waves with load terminal open circuited and short circuited. 

Last Answer : Standing waves with load terminal open circuited   Standing waves: The forward and reflected waves on the incorrectly terminated transmission line produce an interference pattern known as Standing ... , the load impedance will not be equal to the transmission line (characteristic)impedence.

Description : A planning method, which provides details of the work to accomplish, but also provide some  preliminary description of the work to be done in later phases is called : 1. Progressive detailing  2. Rolling wave  3. Strategic  4. Operational

Last Answer : 2. Rolling wave

Description : The patient receiving mitoxantrone (Novantrone) for treatment of secondary progressive multiple sclerosis (MS) is closely monitored for a) leukopenia and cardiac toxicity. Mitoxantrone is an ... d) hypoxia. Patients receiving mitoxantrone are closely monitored for leukopenia and cardiac toxicity.

Last Answer : a) leukopenia and cardiac toxicity. Mitoxantrone is an antineoplastic agent used primarily to treat leukemia and lyphoma but is also used to treat secondary progressive MS. Patients need to have ... ordered and the results closely monitored due to the potential for leukopenia and cardiac toxicity.

Description : The relaxation techniques of progressive muscle relaxation, relaxation with guided imagery, and the Benson Relaxation Response share which of the following elements? a) A mental device (something on which ... required to assist an individual to learn techniques to reduce one's response to stress.

Last Answer : a) A mental device (something on which to focus the attention) Similar elements also include a quiet environment, a comfortable position, and a passive attitude.

Description : Explain constructional features, and working of progressive die. Also state the functions of any four parts of progressive die. 

Last Answer : Constructional features and Working of Progressive Die:  A progressive die consists of the following parts. 1. Stop 2. Sheet metal 3. Pilot 4. Blanking punch 5. Ram 6. Piercing ... 7. Piercing punch: The function of piercing punch is to produce punched holes into the sheet metal. 

Description : For time varying currents, the field or waves will be a) Electrostatic b) Magneto static c) Electromagnetic d) Electrical

Last Answer : c) Electromagnetic

Description : Explain why motion is created in a stationary object even though action and reaction are equal .

Last Answer : According to Newton's third law, the force of action and reaction are equal and opposite. Their gain would be nil if they acted on the same object. But in fact the force of action and reaction ... object, then there is a change of speed and acceleration. The result is motion in a stationary object.

Description : If the force exerted on an object is zero then the object will remain stationary- Explain ?

Last Answer : Zero force applied to an object means that the value of acceleration in it is zero. And since acceleration is needed to move a stable object, zero value of acceleration means that the object will remain stationary.

Description : A train starts its journey from a stationary position and after running for 1 minute in parallel, 30 m / s speed is obtained. Determine the speed of the train in 1 minute ?

Last Answer : Here , the initial velocity , u = 0 m / s end velocity , v = 30 m / s time , t = 1 min = 60 sec we know , acceleration , a = (v- u) / t = (30- 0) / 60 = 0.5 m / s ^ 2 Acceleration = 0.5 m / s ^ 2

Description : The apparent weight of a person in a lift which is moving down with uniform acceleration is _______. (1) greater than the weight when the person is stationary (2) twice the weight when the person ... than the weight when the person is stationary (4) same as the weight when the person is stationary

Last Answer : (3) less than the weight when the person is stationary

Description : The spoon dropped by an astronaut in a satellite will – (1) Fall to the floor (2) Remain stationary (3) Continue to follow the motion of the satellite (4) Move tangentially away

Last Answer : (3) Continue to follow the motion of the satellite Explanation: An orbiting satellite is a projectile in the sense that the only force acting upon an orbiting satellite is the force of gravity. A ... (such as a satellite) would continue in motion with the same speed and in the same direction.

Description : A moving neutron collides with a stationary α-particle. The fraction of the kinetic energy lost by the neutron is – (1) ¼ (2) 1/16 (3) 9/25 (4) 16/25

Last Answer : (4) 16/25

Description : The height of a geo-stationary satellite from the Earth's surface is approximately : (1) 36,000 km (2) 42,000 km (3) 30,000 km (4) None of these

Last Answer : (1) 36,000 km Explanation: A geostationary orbit is a circular orbit 35,786 kilometres above the Earth's equator and following the direction of the Earth's rotation. Communications satellites and weather ... to track them, but can be pointed permanently at the position in the sky where they stay.

Description : A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s-1 collides with stationary red ball of same mass, they move forward making angle of 90° between their paths. Their speed is A. 1 m s-1 B. 0.354 m s-1 C. 2 m s-1 D. 3 m s-1

Last Answer : 0.354 m s-1

Description : If a trolley collides with a stationary trolley of double mass, then they move off with A. half of the original velocity B. one third of original velocity C. double the original velocity D. triple the original velocity

Last Answer : one third of original velocity

Description : Bernoulli's principle shows that, at points in a moving fluid where the potential energy change is very small A. the pressure is low where the velocity is low and similarly, the pressure is ... of the moving fluid D. pressure remain independent of the speed of the stationary fluid

Last Answer : the pressure is low where the velocity is high and conversely, the pressure is high where the velocity is low

Description : In a stationary wave, nodes are at A. fixed points B. movable points C. there are no nodes D. random points

Last Answer : fixed points

Description : As a source of sound approaches a stationary listener, the apparent wavelength: w) increases x) decreases y) stays the same. 

Last Answer : ANSWER: X -- DECREASES

Description : Magnetic fields are produced by: w) resistance x) an electric potential difference y) electric current z) stationary charge

Last Answer : ANSWER: Y -- CURRENT 

Description : A freight car weighing 20 tons and moving at a speed of 7 miles per hour on a horizontal track collides and couples with a stationary car that weighs 15 tons. Neglecting friction, determine the velocity of the coupled cars.

Last Answer : ANSWER: 4 MILES PER HOUR

Description : For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Last Answer : ANSWER: X -- HAVE A COMPONENT OF ITS MOTION PERPENDICULAR TO THE LINES OF FLUX 

Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero

Last Answer : ANSWER: Z -- ZERO

Description : Laura weighs 50 Newtons and pushes against a stationary brick wall that weighs 1,000 Newtons. Her arm is two-thirds of a meter long. According to the laws of physics, how much work does she do? 

Last Answer : ANSWER: NONE or ZERO

Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of ... the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Last Answer : ANSWER: Y -- REMAIN STATIONARY

Description : In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Last Answer : ANSWER: W -- LONGER THAN l