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Module 2

Module 2
95問 • 1年前
  • ユーザ名非公開
    • 通報

    問題一覧

  • 1

    The majority of the mass of an object is related directly to the number of

    protons and neutron in the nucleus

  • 2

    The outermost shell is called

    valence shell

  • 3

    The nucleus contains

    protons and neutron only

  • 4

    The nucleus contains

    protons and neutron only

  • 5

    A positively charged atom is the an atom which

    is deficient of one or more electrons

  • 6

    Atomic mass number is provided by the number of

    protons and neutron

  • 7

    The heat required to change a liquid to a gas is called the

    heat of vaporization

  • 8

    The maximum number of electrons in the inner shell is

    2

  • 9

    The orbits of an atom are counted

    outwards from the nucleus

  • 10

    A negative ion is the ion with

    extra electrons

  • 11

    Tritium has

    two neutrons

  • 12

    Nucleus consists of

    positively charged particles

  • 13

    Electrons are smaller than

    protons and neutrons

  • 14

    atom with valency 3 has

    3 electrons in outer shell

  • 15

    When two or more atoms of a single element share electrons, for example O2

    molecule

  • 16

    Liquid is a type of substance that always flow but will

    not expand to fill the container it is in

  • 17

    If tensile force reversed it became

    compression

  • 18

    20 liters of liquid exerts pressure of 10kpa at the bottom, if further 120 kpa added the pressure at the bottom will be

    60 kpa

  • 19

    A force of 15N is placed 3 m from a pivot point, the moment about the pivot will be

    45NM

  • 20

    Yield point a

    permanent deformation takes place

  • 21

    Two load vectors are 90 ⁰to each other having magnitude of 6N and 8N respectively the resultant load vector will be

    10N

  • 22

    states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid • The pressure due to the weight of water, at a depth of 2 meters, is

    Archimedes’ principle

  • 23

    The pressure due to the weight of water, at a depth of 2 meters, is

    twice the pressure at depth of 1 meter

  • 24

    The weight of an object

    is less

  • 25

    1 newton is equal to

    1kilogram meter per second per second

  • 26

    A force perpendicular to a beam produce stress called

    shear

  • 27

    SI unit of pressure is

    newton per meter squared NM²

  • 28

    Slug is the standard unit

    of mass

  • 29

    The standard temperature for reading a mercury barometer is

    either 0 ⁰ C or 32⁰ F

  • 30

    A mass of sugar having a weight of 45N is

    4.59kg

  • 31

    is a dimensionless quantity representing the amount of matter in a particle or object

    Mass

  • 32

    the force in metric system is measured in

    newton (N

  • 33

    The relationship between the metric and imperial units is given by the conversion factor 1 lb

    4.448 N

  • 34

    weight is a measure of the

    force toward the geometrical center of earth

  • 35

    The mass of an object at the moon is the

    same as at the earth

  • 36

    The equation relating mass and weight is

    w = mg

  • 37

    A vector quantity is a quantity that is fully described by

    both magnitude and direction

  • 38

    is a primary stress that tries to pull a body apart

    Tension

  • 39

    is the ability of a material to return to its original shape after deformation

    Elasticity

  • 40

    When an object is in equilibrium

    sum of anticlockwise moments= sum of clockwise moments

  • 41

    If an object is removed from air into water

    its weight will decrease

  • 42

    A pair of forces of magnitude F that are equal and opposite but applied at points separated by a distance d perpendicular to the forces is

    Couple

  • 43

    of a force about a point is the product of the force and the perpendicular distance

    The moment

  • 44

    The horizontal distance that an item is located from the datum is

    the arm

  • 45

    Cabin altitude is a term used to express cabin pressure in terms of equivalent altitude

    above sea level

  • 46

    What is acceleration

    Rate of change of velocity

  • 47

    The gravitational pull of the earth on a given body called

    weight

  • 48

    What a frequency of a pendulum that swings 1 cycle every 40 millisecond

    25hz

  • 49

    Resonance occurs in a vibrating object when the external excitation frequency is equal to the

    Natural frequency of the object

  • 50

    What is the velocity of a shaft rotating 600 revolutions per minute

    20pi radians/second

  • 51

    The centripetal force of moving object in circular path will

    increase when both mass and speed increased

  • 52

    A cyclist starts from 60m/s and accelerates to 80 m/s in 4 seconds, the acceleration is

    5m/s²

  • 53

    The time period of a pendulum swing depends upon the earth’s gravity and

    length of the pendulum only

  • 54

    A body rotating at angular velocity of 5 radians/second, with a radius of 5 meter its speed is

    25 meters/second

  • 55

    A mass on a spring nearly hits the ground 20 times a minute, its frequency is

    1/3 cycle per second

  • 56

    What force is required to produce an acceleration of 5 m/s² on a mass of 2 kg (F = ma) = 2 * 5 =

    10Newton's

  • 57

    A body starts from the rest and accelerates at rate of 20meter/second square. What is the distance covered whet it reached a velocity of 50 meter per second

    62.5meters

  • 58

    A single fixed pulley (discounting friction) has a mechanical advantage of

    1

  • 59

    What is the kinetic energy of an aircraft of mass of 2 metric tonnes and has a velocity of 2m/s

    4kJ

  • 60

    If body starts at rest and reaches 84meter/second in 3 seconds, what is its acceleration

    28m/s²

  • 61

    A radian is equal to

    57.3⁰

  • 62

    Newton’s first law is called

    the ‘inertia’ law

  • 63

    When body is moving in straight line at constant speed

    it is not accelerating

  • 64

    10 kg of steel is heated from 30 °C to 150 °C. Its density will

    decrease

  • 65

    A body accelerates when changing

    speed and/or direction

  • 66

    In formula A= v-u/t.. U stands for

    initial velocity

  • 67

    A free-falling object has an acceleration at a linear rate o

    32ft/s/s in imperial system

  • 68

    the central angle subtending a length of arc equal to the radius of the circle is

    A radian

  • 69

    2pi radians is equal to

    one revolution

  • 70

    a force of 1 lb. when applied to a mass of 1 slug gives it an acceleration of

    1ft./sec²

  • 71

    The centrifugal force acting on an object travelling in a circular path acts

    away from the centre of the circle

  • 72

    Vibration refers to mechanical oscillations about an

    equilibrium point

  • 73

    is the phenomenon of producing large amplitude of vibrations by a small periodic driving force

    Resonance

  • 74

    The ratio of the useful work performed by a machine to the total energy expended or heat taken in is called

    efficiency

  • 75

    A cyclist starts from 10m/s and accelerates to 85 m/s in 5 seconds, the acceleration is

    15m/s²

  • 76

    A body started from rest and has been falling freely for 3 seconds. At what speed is it falling

    96ft/s

  • 77

    2pi radians is equal

    to 360⁰

  • 78

    Common experience indicates that falling bodies

    accelerate or increase in speed as they fall

  • 79

    The time required to complete a full cycle, T in seconds

    Period

  • 80

    If you push an object with a force of 5 N for 20 m in 4 seconds, power is

    25watt

  • 81

    If you push an object with a force of 5 N for 20 m in 4 seconds, energy is

    100Joule

  • 82

    A force of 15N required to move a mass of 300 kg with a constant velocity, find the coefficient of friction of the opposing force

    0.005

  • 83

    the ratio of the useful work performed by a machine to the total energy expended or heat taken in Is

    EFFICIENCY

  • 84

    Rolling resistance is also known as

    a dynamic friction

  • 85

    the rate of precession in a free gyro is

    directly proportional to strength of the force (applied torque)

  • 86

    A momentum of a mass 8kg traveling at speed of 8m/s

    64kg m/s

  • 87

    A force of 5N is applied to an object for 3 seconds, what is the impulse

    15Ns

  • 88

    Static friction required the

    largest force to overcome it

  • 89

    The rigidity of gyroscope is determine by

    the mass of the rotor, its rotational speed and radius at which it acts

  • 90

    An aeroplane of mass 5,000 kg flies with a momentum of1000, 000kgm/s, what is its velocity

    200m/s

  • 91

    An object experiences an impulse of 8Ns for 2 seconds, how much force applied during impuls

    4N

  • 92

    The SI unit for momentum is

    kilogram meter per second

  • 93

    the precession of the gyro is directly proportional to

    torque applied

  • 94

    The Properties of the gyro

    are Rigidity and Precession

  • 95

    moves in all three planes and is stabilized to a fixed point in space.

    A space gyro

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    問題一覧

  • 1

    The majority of the mass of an object is related directly to the number of

    protons and neutron in the nucleus

  • 2

    The outermost shell is called

    valence shell

  • 3

    The nucleus contains

    protons and neutron only

  • 4

    The nucleus contains

    protons and neutron only

  • 5

    A positively charged atom is the an atom which

    is deficient of one or more electrons

  • 6

    Atomic mass number is provided by the number of

    protons and neutron

  • 7

    The heat required to change a liquid to a gas is called the

    heat of vaporization

  • 8

    The maximum number of electrons in the inner shell is

    2

  • 9

    The orbits of an atom are counted

    outwards from the nucleus

  • 10

    A negative ion is the ion with

    extra electrons

  • 11

    Tritium has

    two neutrons

  • 12

    Nucleus consists of

    positively charged particles

  • 13

    Electrons are smaller than

    protons and neutrons

  • 14

    atom with valency 3 has

    3 electrons in outer shell

  • 15

    When two or more atoms of a single element share electrons, for example O2

    molecule

  • 16

    Liquid is a type of substance that always flow but will

    not expand to fill the container it is in

  • 17

    If tensile force reversed it became

    compression

  • 18

    20 liters of liquid exerts pressure of 10kpa at the bottom, if further 120 kpa added the pressure at the bottom will be

    60 kpa

  • 19

    A force of 15N is placed 3 m from a pivot point, the moment about the pivot will be

    45NM

  • 20

    Yield point a

    permanent deformation takes place

  • 21

    Two load vectors are 90 ⁰to each other having magnitude of 6N and 8N respectively the resultant load vector will be

    10N

  • 22

    states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid • The pressure due to the weight of water, at a depth of 2 meters, is

    Archimedes’ principle

  • 23

    The pressure due to the weight of water, at a depth of 2 meters, is

    twice the pressure at depth of 1 meter

  • 24

    The weight of an object

    is less

  • 25

    1 newton is equal to

    1kilogram meter per second per second

  • 26

    A force perpendicular to a beam produce stress called

    shear

  • 27

    SI unit of pressure is

    newton per meter squared NM²

  • 28

    Slug is the standard unit

    of mass

  • 29

    The standard temperature for reading a mercury barometer is

    either 0 ⁰ C or 32⁰ F

  • 30

    A mass of sugar having a weight of 45N is

    4.59kg

  • 31

    is a dimensionless quantity representing the amount of matter in a particle or object

    Mass

  • 32

    the force in metric system is measured in

    newton (N

  • 33

    The relationship between the metric and imperial units is given by the conversion factor 1 lb

    4.448 N

  • 34

    weight is a measure of the

    force toward the geometrical center of earth

  • 35

    The mass of an object at the moon is the

    same as at the earth

  • 36

    The equation relating mass and weight is

    w = mg

  • 37

    A vector quantity is a quantity that is fully described by

    both magnitude and direction

  • 38

    is a primary stress that tries to pull a body apart

    Tension

  • 39

    is the ability of a material to return to its original shape after deformation

    Elasticity

  • 40

    When an object is in equilibrium

    sum of anticlockwise moments= sum of clockwise moments

  • 41

    If an object is removed from air into water

    its weight will decrease

  • 42

    A pair of forces of magnitude F that are equal and opposite but applied at points separated by a distance d perpendicular to the forces is

    Couple

  • 43

    of a force about a point is the product of the force and the perpendicular distance

    The moment

  • 44

    The horizontal distance that an item is located from the datum is

    the arm

  • 45

    Cabin altitude is a term used to express cabin pressure in terms of equivalent altitude

    above sea level

  • 46

    What is acceleration

    Rate of change of velocity

  • 47

    The gravitational pull of the earth on a given body called

    weight

  • 48

    What a frequency of a pendulum that swings 1 cycle every 40 millisecond

    25hz

  • 49

    Resonance occurs in a vibrating object when the external excitation frequency is equal to the

    Natural frequency of the object

  • 50

    What is the velocity of a shaft rotating 600 revolutions per minute

    20pi radians/second

  • 51

    The centripetal force of moving object in circular path will

    increase when both mass and speed increased

  • 52

    A cyclist starts from 60m/s and accelerates to 80 m/s in 4 seconds, the acceleration is

    5m/s²

  • 53

    The time period of a pendulum swing depends upon the earth’s gravity and

    length of the pendulum only

  • 54

    A body rotating at angular velocity of 5 radians/second, with a radius of 5 meter its speed is

    25 meters/second

  • 55

    A mass on a spring nearly hits the ground 20 times a minute, its frequency is

    1/3 cycle per second

  • 56

    What force is required to produce an acceleration of 5 m/s² on a mass of 2 kg (F = ma) = 2 * 5 =

    10Newton's

  • 57

    A body starts from the rest and accelerates at rate of 20meter/second square. What is the distance covered whet it reached a velocity of 50 meter per second

    62.5meters

  • 58

    A single fixed pulley (discounting friction) has a mechanical advantage of

    1

  • 59

    What is the kinetic energy of an aircraft of mass of 2 metric tonnes and has a velocity of 2m/s

    4kJ

  • 60

    If body starts at rest and reaches 84meter/second in 3 seconds, what is its acceleration

    28m/s²

  • 61

    A radian is equal to

    57.3⁰

  • 62

    Newton’s first law is called

    the ‘inertia’ law

  • 63

    When body is moving in straight line at constant speed

    it is not accelerating

  • 64

    10 kg of steel is heated from 30 °C to 150 °C. Its density will

    decrease

  • 65

    A body accelerates when changing

    speed and/or direction

  • 66

    In formula A= v-u/t.. U stands for

    initial velocity

  • 67

    A free-falling object has an acceleration at a linear rate o

    32ft/s/s in imperial system

  • 68

    the central angle subtending a length of arc equal to the radius of the circle is

    A radian

  • 69

    2pi radians is equal to

    one revolution

  • 70

    a force of 1 lb. when applied to a mass of 1 slug gives it an acceleration of

    1ft./sec²

  • 71

    The centrifugal force acting on an object travelling in a circular path acts

    away from the centre of the circle

  • 72

    Vibration refers to mechanical oscillations about an

    equilibrium point

  • 73

    is the phenomenon of producing large amplitude of vibrations by a small periodic driving force

    Resonance

  • 74

    The ratio of the useful work performed by a machine to the total energy expended or heat taken in is called

    efficiency

  • 75

    A cyclist starts from 10m/s and accelerates to 85 m/s in 5 seconds, the acceleration is

    15m/s²

  • 76

    A body started from rest and has been falling freely for 3 seconds. At what speed is it falling

    96ft/s

  • 77

    2pi radians is equal

    to 360⁰

  • 78

    Common experience indicates that falling bodies

    accelerate or increase in speed as they fall

  • 79

    The time required to complete a full cycle, T in seconds

    Period

  • 80

    If you push an object with a force of 5 N for 20 m in 4 seconds, power is

    25watt

  • 81

    If you push an object with a force of 5 N for 20 m in 4 seconds, energy is

    100Joule

  • 82

    A force of 15N required to move a mass of 300 kg with a constant velocity, find the coefficient of friction of the opposing force

    0.005

  • 83

    the ratio of the useful work performed by a machine to the total energy expended or heat taken in Is

    EFFICIENCY

  • 84

    Rolling resistance is also known as

    a dynamic friction

  • 85

    the rate of precession in a free gyro is

    directly proportional to strength of the force (applied torque)

  • 86

    A momentum of a mass 8kg traveling at speed of 8m/s

    64kg m/s

  • 87

    A force of 5N is applied to an object for 3 seconds, what is the impulse

    15Ns

  • 88

    Static friction required the

    largest force to overcome it

  • 89

    The rigidity of gyroscope is determine by

    the mass of the rotor, its rotational speed and radius at which it acts

  • 90

    An aeroplane of mass 5,000 kg flies with a momentum of1000, 000kgm/s, what is its velocity

    200m/s

  • 91

    An object experiences an impulse of 8Ns for 2 seconds, how much force applied during impuls

    4N

  • 92

    The SI unit for momentum is

    kilogram meter per second

  • 93

    the precession of the gyro is directly proportional to

    torque applied

  • 94

    The Properties of the gyro

    are Rigidity and Precession

  • 95

    moves in all three planes and is stabilized to a fixed point in space.

    A space gyro