According to the equation ‘r = (mv)⁄(Be)’, the faster moving particles A. move in smaller circle B. move straight C. move in bigger circle D. move randomly

According to the equation ‘r = (mv)⁄(Be)’, the faster moving particles

A. move in smaller circle

B. move straight

C. move in bigger circle

D. move randomly
by

1 Answer

Answer :

move in bigger circle


by

Related questions

A proton having mass m and charge q is projected into a region having a perpendicular magnetic field. The angle of deviation of proton when it comes out of the region with mv √2 qB ⁄ is a) π/3 b) π/4 c) π/6 d) 2 π/3

Description : A proton having mass m and charge q is projected into a region having a perpendicular magnetic field. The angle of deviation of proton when it comes out of the region with mv √2 qB ⁄ is a) π/3 b) π/4 c) π/6 d) 2 π/3

Last Answer : b) π/4

A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin (a) mv (b) Depends on its distance from origin (c) Is zero (d) Changes from positive to negative as it passes through the origin

Description : A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin (a) mv (b) Depends on its distance from origin (c) Is zero (d) Changes from positive to negative as it passes through the origin

Last Answer : Ans:(c)

Velocity of escape is equal to A. r × √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength B. g × √(2r); where r: radius of Earth or any other planet for that matter, g: gravitational field strength C. √(2g) ⁄ r; where r: radius of Earth or any other planet for that matter, g: gravitational field strength D. √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

Description : Velocity of escape is equal to A. r √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength B. g √(2r); where r: radius of ... (2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

Last Answer : √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

Which of the following statements is/are true ? 1) Cache Memories are bigger than RAM 2) Cache Memories are smaller than RAM 3) ROM are faster than RAM 4) Information in ROM can be written by users

Description : Which of the following statements is/are true ? 1) Cache Memories are bigger than RAM 2) Cache Memories are smaller than RAM 3) ROM are faster than RAM 4) Information in ROM can be written by users

Last Answer : 2) Cache Memories are smaller than RAM

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 two pucks does one of the following. Does it: w) move in a circle x) move in the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

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

A man in a train moving with a constant velocity drops a ball on the platform. The path of the ban as seen by an observer standing on the platform is – (1) A straight line (2) A circle (3) A parabola (4) None of these

Description : A man in a train moving with a constant velocity drops a ball on the platform. The path of the ban as seen by an observer standing on the platform is – (1) A straight line (2) A circle (3) A parabola (4) None of these

Last Answer : (3) A parabola Explanation: In the reference frame of the platform the ball has initial horizontal velocity equal to the velocity of the train. The vertical direction is the same observed on the train because both observers agree that gravity is acting on the ball causing an acceleration g.

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be - (1) a parabola (2) a horizontal straight line (3) a vertical straight line (4) a circle

Description : A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be - (1) a parabola (2) a horizontal straight line (3) a vertical straight line (4) a circle

Last Answer : (1) a parabola Explanation: Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So, by Newton's first law, it continues its motion horizontally with that velocity.

A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is (1) A straight line (2) A circle (3) A parabola (4) None of these

Description : A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is (1) A straight line (2) A circle (3) A parabola (4) None of these

Last Answer : A parabola

When an electron is moving horizontally between oppositely charged plates, it will move in the A. straight line B. fall directly downwards C. move towards positive plates D. curved path

Description : When an electron is moving horizontally between oppositely charged plates, it will move in the A. straight line B. fall directly downwards C. move towards positive plates D. curved path

Last Answer : curved path

Adiabatic bulk modulus is equal to: A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressureB. PressureC. The ratio of the specific heat capacities of the gasD. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

Description : Adiabatic bulk modulus is equal to:  A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure B. Pressure C. The ratio of the specific heat capacities of the gas D. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

Last Answer : Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressur

Isothermal bulk modulus is equal to A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure B. Pressure C. The ratio of the specific heat capacities of the gas D. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

Description : Isothermal bulk modulus is equal to A. Υ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure B. Pressure C. The ratio of the specific heat capacities of the gas D. Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

Last Answer : Pressure

Boyle's law states that A. pressure of a gas is inversely proportional to its volume i.e. P × V = constant B. pressure of a gas is directly proportional to its volume i.e. P⁄V = constant C. pressure of a gas is inversely proportional to the square of its volume i.e. P × V² = constant D. pressure of a gas is directly proportional to the square of its volume i.e. P ⁄ V² = constant

Description : Boyle's law states that A. pressure of a gas is inversely proportional to its volume i.e. P V = constant B. pressure of a gas is directly proportional to its volume i.e. P⁄V = constant C. ... of a gas is directly proportional to the square of its volume i.e. P ⁄ V² = constant

Last Answer : pressure of a gas is inversely proportional to its volume i.e. P × V = constant

When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressureC. change in volume ⁄ original volumeD. original volume ⁄ change in volume

Description : When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressure C. change in volume ⁄ original volume D. original volume ⁄ change in volume

Last Answer : change in volume ⁄ original volume

Einstein's mass-energy relationship states that if the mass decreases by Δm, the energy released ΔE is given by A. ΔE = Δm × c, where "c" denotes the speed of light. B. ΔE = Δm × c², where "c" denotes the speed of light. C. ΔE = Δm ⁄ c, where "c" denotes the speed of light. D. ΔE = Δm ⁄ c², where "c" denotes the speed of light

Description : Einstein's mass-energy relationship states that if the mass decreases by Δm, the energy released ΔE is given by A. ΔE = Δm c, where "c" denotes the speed of light. B. ΔE = Δm c², where "c" ... where "c" denotes the speed of light. D. ΔE = Δm ⁄ c², where "c" denotes the speed of light

Last Answer : ΔE = Δm × c², where "c" denotes the speed of light.

A moving coil instrument of resistance 5 Ohm requires a potential difference of 75 mV to give a full scale...

Description : A moving coil instrument of resistance 5 Ohm requires a potential difference of 75 mV to give a full scale deflection. The value of shunt resistance needed to give a full scale deflection at 30 A is

Last Answer : A moving coil instrument of resistance 5 Ohm requires a potential difference of 75 mV to give a full scale deflection. The value of shunt resistance needed to give a full scale deflection at 30 A is 2.5 milliOhm

A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r

Description : A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r

Last Answer : (4) V²/r Explanation: When a particle is moving in a uniform circular motion with constant speed and radius. the acceleration of the particle is given by v2/r. The particle will exhibit centripetal acceleration.

An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to A. v²⁄r B. v⁄r C. v²×r D. v×r

Description : An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to A. v²⁄r B. v⁄r C. v²×r D. v×r

Last Answer : v²⁄r

De Broglie equation is (a) h/mv = 1 (b) E1 – E2 = hv (c) C = 1v (d) n1 = 2d sin q

Description : De Broglie equation is (a) h/mv = 1 (b) E1 – E2 = hv (c) C = 1v (d) n1 = 2d sin q

Last Answer : Ans:(a)

The de Broglie equation is (a) h/mv = 1 (b) hv = E2 - E1 (c) n 1 = 2d sin (d) c = hv

Description : The de Broglie equation is (a) h/mv = 1 (b) hv = E2 - E1 (c) n 1 = 2d sin (d) c = hv

Last Answer : Ans:(a)

The Unix command: $ vi file1 file2 (A) Edits file1 and stores the contents of file1 in file2 (B) Both files i.e. file1 and file2 can be edited using ‘ex’ command to travel between files (C) Both files can be edited using the ‘mv’ command to move between the files (D) Edits file1 first, saves it and the edits file2

Description : The Unix command: $ vi file1 file2 (A) Edits file1 and stores the contents of file1 in file2 (B) Both files i.e. file1 and file2 can be edited using ex' command to travel between files (C) Both ... using the mv' command to move between the files (D) Edits file1 first, saves it and the edits file2

Last Answer : (B) Both files i.e. file1 and file2 can be edited using ‘ex’ command to travel between files

Why do hot particles move faster than the cool gas particle?

Description : Why do hot particles move faster than the cool gas particle?

Last Answer : Need answer

How do particles in warm water move faster than cold water?

Description : How do particles in warm water move faster than cold water?

Last Answer : ROUGHLY SPEAKING, that's what temperature is about.Actually, ahigher temperature is more accurately described as the averageenergy per particle and per degree of freedom; but for one and thesame substance, higher energy will also imply higher speeds.

Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids (C) Particles movement from higher concentration to lower concentration takes place in diffusion process (D) According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids

When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A Longitudinal vibrations B Transverse vibrations C Torsional vibrations D None of these

Description : When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A Longitudinal vibrations B Transverse vibrations C Torsional vibrations D None of these

Last Answer : C Torsional vibrations

When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A. longitudinal vibrations B. transverse vibrations C. torsional vibrations D. none of these

Description : When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A. longitudinal vibrations B. transverse vibrations C. torsional vibrations D. none of these

Last Answer : C. torsional vibrations

In which two states are the particles arranged randomly?

Description : In which two states are the particles arranged randomly?

Last Answer : liquid and solid

An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the electrons have more energy than the light particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Description : An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Last Answer : (4) the wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope uses a beam of electrons to illuminate a specimen and produce a ... photons. Magnification is the process of enlarging something only in appearance, not in physical size.

An electron microscope gives higher magnification than an optical microscope, because : (1) it uses more powerful lenses (2) the velocity of electron is smaller than that of visible light (3) the electrons have more energy than the light particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Description : An electron microscope gives higher magnification than an optical microscope, because : (1) it uses more powerful lenses (2) the velocity of electron is smaller than that of visible light (3) ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light

Last Answer : the wavelength of electrons is smaller as compared to the wavelength of visible light

Dimension of culture in which masculine values prevail over feminism values is classified as A. masculinity ⁄ femininity B. power distance C. orientation distance D. none of above

Description : Dimension of culture in which masculine values prevail over feminism values is classified as A. masculinity ⁄ femininity B. power distance C. orientation distance D. none of above

Last Answer : masculinity ⁄ femininity

An electron and a proton are moving at the same speed in circular paths in the same uniform magnetic field. The radius of the path of the proton is one of the following. Is this radius: w) the same as that of the electron x) about 2000 times larger than that of the electron y) a little larger than that of the electron z) smaller than that of the electron

Description : An electron and a proton are moving at the same speed in circular paths in the same uniform magnetic field. The radius of the path of the proton is one of the following. Is this radius: w) the same ... of the electron y) a little larger than that of the electron z) smaller than that of the electron

Last Answer : ANSWER: X -- ABOUT 2000 TIMES LARGER THAN THAT OF THE ELECTRON

Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one over the radius squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Description : Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one ... squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Last Answer : ANSWER: W -- ZERO

A charged particle (charge `q`) is moving in a circle of radius `R` with unifrom speed `v`. The associated magnetic moment `mu` is given by

Description : A charged particle (charge `q`) is moving in a circle of radius `R` with unifrom speed `v`. The associated magnetic moment `mu` is given by

Last Answer : A charged particle (charge `q`) is moving in a circle of radius `R` with unifrom speed `v`. The associated magnetic ... . `1/2 aqR` D. `1/2 q^(2)vR`

According to widely accepted “fluid mosaic model” cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect? (a) Proteins in cell membranes can travel within the lipid bilayer. (b) Proteins can also undergo flip-flop movements in the lipid bilayer. (c) Proteins can remain confined within certain domains of the membrane.(d) Many proteins remain completely embedded within the lipid bilayer.

Description : According to widely accepted fluid mosaic model cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several ... domains of the membrane. (d) Many proteins remain completely embedded within the lipid bilayer.

Last Answer : (b) Proteins can also undergo flip-flop movements in the lipid bilayer.

When an object is heated, the molecules of that object - (1) began to move faster (2) lose energy (3) become heavier (4) become lighter

Description : When an object is heated, the molecules of that object - (1) began to move faster (2) lose energy (3) become heavier (4) become lighter

Last Answer : (1) began to move faster Explanation: When heat is added to a substance, the molecules and atoms vibrate faster. Then the molecules of that object began to move faster.

A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is at right angles to the magnetic field, describe the shape of the charged particle's path.

Description : A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is at right angles to the magnetic field, describe the shape of the charged particle's path.

Last Answer : ANSWER: CIRCULAR or CIRCLE

A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, describe the shape of the charged particle's path.

Description : A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, describe the shape of the charged particle's path. 

Last Answer : ANSWER: STRAIGHT LINE

What is The area of a circle depending on the radius. Use the equation A(r) r2 to compute A(7). Round your answer to the nearest hundredth.?

Description : What is The area of a circle depending on the radius. Use the equation A(r) r2 to compute A(7). Round your answer to the nearest hundredth.?

Last Answer : The area of a circle is: pi times radius squared

What is The area of a circle depending on the radius. Use the equation A(r) r2 to compute A(7). Round your answer to the nearest hundredth.?

Description : What is The area of a circle depending on the radius. Use the equation A(r) r2 to compute A(7). Round your answer to the nearest hundredth.?

Last Answer : The area of a circle is: pi times radius squared

Mohr’s stress circle is named so because it has equation of the form a. x^2 + y^2 = r^2 b. (x-a)^2 + y^2 = r^2 c. (x-a)^2 + (y-b)^2 = r^2 d. It was desired by German Engineer Otto Mohr

Description : Mohr’s stress circle is named so because it has equation of the form a. x^2 + y^2 = r^2 b. (x-a)^2 + y^2 = r^2 c. (x-a)^2 + (y-b)^2 = r^2 d. It was desired by German Engineer Otto Mohr

Last Answer : b. (x-a)^2 + y^2 = r^2

A car is moving in a straight path. What is the motion of the car? -Physics

Description : A car is moving in a straight path. What is the motion of the car? -Physics

Last Answer : Rectilinear motion or straight line motion

A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. (1) The ball falls – (2) Behind him (3) In front of him (4) Into his hand

Description : A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. (1) The ball falls – (2) Behind him (3) In front of him (4) Into his hand

Last Answer : (1) Behind him Explanation: The moment ball is thrown, it is moving with the velocity of the car. According to the inertia of motion it will continue to move in the same direction with the same ... is not possible to neglect the resistance caused by air friction. So, the ball will fall behind him.

If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will – (1) Fall in front of him (2) Fall behind him (3) Fall into his hand (4) None of the above

Description : If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will – (1) Fall in front of him (2) Fall behind him (3) Fall into his hand (4) None of the above

Last Answer : (3) Fall into his hand Explanation: If a person throws a ball vertically upwards in a moving train, it comes hack to his hand. The moment the ball was thrown, the ball was also in motion alone with ... ball move ahead by the same distance. This makes the ball to come back to his hand on its return.

A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is: w) 1250 kilograms x) 2500 kilograms y) 5000 kilograms z) 10,000 kilograms

Description : A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is: w) 1250 kilograms x) 2500 kilograms y) 5000 kilograms z) 10,000 kilograms

Last Answer : ANSWER: X -- 2500 KILOGRAMS

The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is w) 0 degrees x) 30 degrees y) 60 degrees z) 90 degrees

Description : The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is w) 0 degrees x) 30 degrees y) 60 degrees z) 90 degrees

Last Answer : ANSWER: Z -- 90 DEGREES

If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will (1) fall in front of him (2) fall behind him (3) fall into his hand (4) None of the above

Description : If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will (1) fall in front of him (2) fall behind him (3) fall into his hand (4) None of the above

Last Answer :  fall into his hand

A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls (1) behind him (2) in front of him (3) into his hand (4) by his side

Description : A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls (1) behind him (2) in front of him (3) into his hand (4) by his side

Last Answer : behind him

The following particles move with same kinetic energy. Which of them has maximum momentum? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Description : The following particles move with same kinetic energy. Which of them has maximum momentum? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Last Answer : (4) Alpha Particle Explanation: The formula for kinetic energy in terms of momentum for fundamental particles is basically just a quantized version of the classical formula, KE=(P^2)/2m, where KE is kinetic energy, p is momentum and m is the particle’s mass.

As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move

Description : As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move

Last Answer : ANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE  

The following particles move with same kinetic energy. Which of them has maximum momentum ? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Description : The following particles move with same kinetic energy. Which of them has maximum momentum ? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Last Answer : Alpha Particle

When a body is moving along a circular path, it's velocity is directedtowardsA. centerB. normalC. tangentD. parallel to circle

Description : When a body is moving along a circular path, it's velocity is directed towards A. center B. normal C. tangent D. parallel to circle

Last Answer : tangent