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mod 2 test

mod 2 test
100 frågor • 1 år sedan
  • Aljuboory
    • rapportera

    Frågelista

  • 1

    protons and neutron in the nucleus

  • 2

    valence shell

  • 3

    protons and neutron only

  • 4

    is deficient of one or more electrons

  • 5

    protons and neutron

  • 6

    heat of vaporization

  • 7

    2

  • 8

    outwards from the nucleus

  • 9

    extra electrons

  • 10

    two neutrons

  • 11

    positively charged particles

  • 12

    protons and neutrons

  • 13

    3 electrons in outer shell

  • 14

    molecule

  • 15

    not expand to fill the container it is in

  • 16

    compression

  • 17

    60 Kpa

  • 18

    45NM

  • 19

    permanent deformation takes place

  • 20

    10N

  • 21

    Archimedes principle

  • 22

    twice the pressure at depth of 1 meter

  • 23

    • 1 newton is equal to

    1 kilogram meter per second per second

  • 24

    • A force perpendicular to a beam produce stress called

    shear

  • 25

    • SI unit of pressure is

    newton per meter squared NM²

  • 26

    • Slug is the standard unit

    of mass

  • 27

    • The standard temperature for reading a mercury barometer is

    either 0 ⁰ C or 32⁰ F

  • 28

    • A mass of sugar having a weight of 45N is

    4.59kg

  • 29

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

    Mass

  • 30

    • the force in metric system is measured in

    newton (N)

  • 31

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

    4.448 N

  • 32

    • weight is a measure of the

    force toward the geometrical center of earth

  • 33

    • The mass of an object at the moon is the

    same as at the earth

  • 34

    • The equation relating mass and weight is:

    w = mg

  • 35

    • A vector quantity is a quantity that is fully described by

    both magnitude and direction

  • 36

    is a primary stress that tries to pull a body apart.

    Tension

  • 37

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

    Elasticity

  • 38

    • When an object is in equilibrium:

    sum of anticlockwise moments= sum of clockwise moments

  • 39

    • If an object is removed from air into water

    its weight will decrease

  • 40

    • 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

  • 41

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

    the moment

  • 42

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

    the arm

  • 43

    is a term used to express cabin pressure in terms of equivalent altitude above sea level

    Cabin altitude

  • 44

    • What is acceleration?

    Rate of change of velocity

  • 45

    • The gravitational pull of the earth on a given body called

    weight

  • 46

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

    25hz

  • 47

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

    Natural frequency of the object

  • 48

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

    20 pi radians/second

  • 49

    • The centripetal force of moving object in circular path will

    increase when both mass and speed increased.

  • 50

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

    5m/s²

  • 51

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

    length of the pendulum only

  • 52

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

    25 meters/second

  • 53

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

    1/3 cycle per second.

  • 54

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

    10 Newton's

  • 55

    • 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

  • 56

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

    1

  • 57

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

    4 kJ.

  • 58

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

    28m/s²

  • 59

    • A radian is equal to

    57.3⁰

  • 60

    • Newton’s first law is called :

    (the ‘inertia’ law)

  • 61

    • When body is moving in straight line at constant speed:

    it is not accelerating

  • 62

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

    decrease

  • 63

    • A body accelerates when changing

    speed and/or direction

  • 64

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

    initial velocity

  • 65

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

    32ft/s/s in imperial system

  • 66

    • the central angle subtending a length of arc equal to the radius of the circle is A radian • 2pi radians is equal to

    one revolution

  • 67

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

    1 ft./sec²

  • 68

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

    away from the centre of the circle.

  • 69

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

    • Resonance

  • 70

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

    efficiency

  • 71

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

    15m/s²

  • 72

    • The symbol that is used to represent the angular velocity is the

    Greek letter omega

  • 73

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

    96ft/s

  • 74

    • 2pi radians is equal to

    360⁰

  • 75

    • Common experience indicates that falling bodies

    accelerate or increase in speed as they fall

  • 76

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

    Period

  • 77

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

    25 watt

  • 78

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

    100 Joule

  • 79

    • 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

  • 80

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

    EFFICIENCY

  • 81

    • Rolling resistance is also known as

    a dynamic friction

  • 82

    • the rate of precession in a free gyro is

    directly proportional to strength of the force (applied torque)

  • 83

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

    64kg m/s

  • 84

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

    15Ns

  • 85

    • Static friction required the

    largest force to overcome it

  • 86

    • The rigidity of gyroscope is determine by:

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

  • 87

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

    200m/s

  • 88

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

    4N

  • 89

    • The SI unit for momentum is

    kilogram meter per second

  • 90

    • the precession of the gyro is directly proportional to

    the torque applied

  • 91

    • The Properties of the gyro

    are Rigidity and Precession

  • 92

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

    • A space gyro

  • 93

    • The resistance of any physical object to any change in its state of motion is called:

    inertia

  • 94

    • A body at rest remains at rest and a body in motion continues to move at constant velocity unless acted upon by an unbalanced external force is:

    Newton’s first law

  • 95

    • the law of inertia is

    Newton’s first law

  • 96

    The vector sum of the forces acting on the body in the x-direction and the y-direction is zero

    • the body is in equilibrium

  • 97

    • a gyroscope maintain its alignment to a fixed point in space this characteristics is

    Rigidity

  • 98

    • The product of mass times velocity( MV) is:

    momentum

  • 99

    • collisions that occur between bodies that deform very little in the collision

    Elastic collisions

  • 100

    • The impulse experienced by the object equals the

    change in momentum of the object

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    Frågelista

  • 1

    protons and neutron in the nucleus

  • 2

    valence shell

  • 3

    protons and neutron only

  • 4

    is deficient of one or more electrons

  • 5

    protons and neutron

  • 6

    heat of vaporization

  • 7

    2

  • 8

    outwards from the nucleus

  • 9

    extra electrons

  • 10

    two neutrons

  • 11

    positively charged particles

  • 12

    protons and neutrons

  • 13

    3 electrons in outer shell

  • 14

    molecule

  • 15

    not expand to fill the container it is in

  • 16

    compression

  • 17

    60 Kpa

  • 18

    45NM

  • 19

    permanent deformation takes place

  • 20

    10N

  • 21

    Archimedes principle

  • 22

    twice the pressure at depth of 1 meter

  • 23

    • 1 newton is equal to

    1 kilogram meter per second per second

  • 24

    • A force perpendicular to a beam produce stress called

    shear

  • 25

    • SI unit of pressure is

    newton per meter squared NM²

  • 26

    • Slug is the standard unit

    of mass

  • 27

    • The standard temperature for reading a mercury barometer is

    either 0 ⁰ C or 32⁰ F

  • 28

    • A mass of sugar having a weight of 45N is

    4.59kg

  • 29

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

    Mass

  • 30

    • the force in metric system is measured in

    newton (N)

  • 31

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

    4.448 N

  • 32

    • weight is a measure of the

    force toward the geometrical center of earth

  • 33

    • The mass of an object at the moon is the

    same as at the earth

  • 34

    • The equation relating mass and weight is:

    w = mg

  • 35

    • A vector quantity is a quantity that is fully described by

    both magnitude and direction

  • 36

    is a primary stress that tries to pull a body apart.

    Tension

  • 37

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

    Elasticity

  • 38

    • When an object is in equilibrium:

    sum of anticlockwise moments= sum of clockwise moments

  • 39

    • If an object is removed from air into water

    its weight will decrease

  • 40

    • 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

  • 41

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

    the moment

  • 42

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

    the arm

  • 43

    is a term used to express cabin pressure in terms of equivalent altitude above sea level

    Cabin altitude

  • 44

    • What is acceleration?

    Rate of change of velocity

  • 45

    • The gravitational pull of the earth on a given body called

    weight

  • 46

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

    25hz

  • 47

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

    Natural frequency of the object

  • 48

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

    20 pi radians/second

  • 49

    • The centripetal force of moving object in circular path will

    increase when both mass and speed increased.

  • 50

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

    5m/s²

  • 51

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

    length of the pendulum only

  • 52

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

    25 meters/second

  • 53

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

    1/3 cycle per second.

  • 54

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

    10 Newton's

  • 55

    • 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

  • 56

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

    1

  • 57

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

    4 kJ.

  • 58

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

    28m/s²

  • 59

    • A radian is equal to

    57.3⁰

  • 60

    • Newton’s first law is called :

    (the ‘inertia’ law)

  • 61

    • When body is moving in straight line at constant speed:

    it is not accelerating

  • 62

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

    decrease

  • 63

    • A body accelerates when changing

    speed and/or direction

  • 64

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

    initial velocity

  • 65

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

    32ft/s/s in imperial system

  • 66

    • the central angle subtending a length of arc equal to the radius of the circle is A radian • 2pi radians is equal to

    one revolution

  • 67

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

    1 ft./sec²

  • 68

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

    away from the centre of the circle.

  • 69

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

    • Resonance

  • 70

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

    efficiency

  • 71

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

    15m/s²

  • 72

    • The symbol that is used to represent the angular velocity is the

    Greek letter omega

  • 73

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

    96ft/s

  • 74

    • 2pi radians is equal to

    360⁰

  • 75

    • Common experience indicates that falling bodies

    accelerate or increase in speed as they fall

  • 76

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

    Period

  • 77

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

    25 watt

  • 78

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

    100 Joule

  • 79

    • 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

  • 80

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

    EFFICIENCY

  • 81

    • Rolling resistance is also known as

    a dynamic friction

  • 82

    • the rate of precession in a free gyro is

    directly proportional to strength of the force (applied torque)

  • 83

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

    64kg m/s

  • 84

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

    15Ns

  • 85

    • Static friction required the

    largest force to overcome it

  • 86

    • The rigidity of gyroscope is determine by:

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

  • 87

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

    200m/s

  • 88

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

    4N

  • 89

    • The SI unit for momentum is

    kilogram meter per second

  • 90

    • the precession of the gyro is directly proportional to

    the torque applied

  • 91

    • The Properties of the gyro

    are Rigidity and Precession

  • 92

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

    • A space gyro

  • 93

    • The resistance of any physical object to any change in its state of motion is called:

    inertia

  • 94

    • A body at rest remains at rest and a body in motion continues to move at constant velocity unless acted upon by an unbalanced external force is:

    Newton’s first law

  • 95

    • the law of inertia is

    Newton’s first law

  • 96

    The vector sum of the forces acting on the body in the x-direction and the y-direction is zero

    • the body is in equilibrium

  • 97

    • a gyroscope maintain its alignment to a fixed point in space this characteristics is

    Rigidity

  • 98

    • The product of mass times velocity( MV) is:

    momentum

  • 99

    • collisions that occur between bodies that deform very little in the collision

    Elastic collisions

  • 100

    • The impulse experienced by the object equals the

    change in momentum of the object