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ESAS 1 EVAL
25問 • 1年前
  • premopremo remo
    • 通報

    問題一覧

  • 1

    A block draped up an inclined plane of elogie angle of 20 deg by a force of F+ 18,4 bs, 30 degrees with the plane How will the component Fy in ths be

    12

  • 2

    A man standing at a window 5 meters talla falling ball passes by the window 0.3 sec. From how high above the top of the window was the ball released?

    11.8 m

  • 3

    A block is pulled to the right at a constant velocity by a 10-b force acting 30 degree above the horizontal. The coefficient of sliding friction between the block and surfaces is 0.5. What is the weight of the block? Assume all of the forces on the block to act at its center,

    22.32 lbs

  • 4

    900 lbs

    900 lbs

  • 5

    A flywheel whose angular acceleration is constant and equal to 2 rad/sec square rotates through an angle of 100 radians in 5 sec. How long had it been in motion at the beginning of the 5 sec interval if it started from rest?

    7.5 sec

  • 6

    What force is required to punch a 0.75-inch circular hole through a piece of 5/8-inch thick steel plate? the ultimate shear strength is 42 ksi

    61,850 lbs

  • 7

    A welded steel cylindrical drum made of a 10-mm plate diameter that would be caused by an internal pressure of has en intemal diameter of 1.20 m. Compute ins MPa kasume that Poisson's ratio is 0.30 and E=200 GPa

    0.428 m

  • 8

    What is the dimensionless number that is used to describe by viscosity of fluid?

    Reynolds Number

  • 9

    What refers to the formation and collapse of small bubbles of vapors in liquid which caused by combination of reduced pressure and increased velocity in the fluid?

    Cavitation

  • 10

    In the design of waterways, the "hydraulic jump" is sometimes used for

    energy dissipation

  • 11

    33. At what critical speed which the flow of long cylindrical pipe of diameter 1.5 cm becomes turbulent considering that the temperature is 20°C, viscosity is 1.0\times10^-1 Pa-sec, and critical Reynolds number is 2000.

    0.155 m/sec

  • 12

    A hygrometer is an instrument to measure

    relative humidity

  • 13

    How many kilograms are there in 10 slugs?

    146

  • 14

    The physical quantity which produces angular acceleration is called

    Torque

  • 15

    A type of loading which occurs when the load is NOT applied through the center of gravity?

    Modulus od elesticity

  • 16

    The ration of the dynamic viscosity of a fluid to its mass density is known as

    Kinematic viscosity

  • 17

    The viscosity of a fluid is that property which determines the amount of its resistance against

    Shearing force

  • 18

    The ratio of the unit weight of the fluid to the unit weight of water at 4°C is known as

    Specific gravity

  • 19

    The effect of cohesion between particles of the fluid at its free surfaceis known as _______

    Cohesion

  • 20

    Gases have no definite

    volume

  • 21

    What is the dimensionless number that is used to describe by yiscosity of fluid?

    Reynolds number

  • 22

    The units for dynamic viscosity is

    Pa-s

  • 23

    Impulse is the change in

    momentum

  • 24

    wagon is uniformly accelerating from rest. The net force acting on the wagon is

    constant

  • 25

    Find formula for the minimum velocity for a given range of a projectile fired on a level plane.

    v=√gh

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    問題一覧

  • 1

    A block draped up an inclined plane of elogie angle of 20 deg by a force of F+ 18,4 bs, 30 degrees with the plane How will the component Fy in ths be

    12

  • 2

    A man standing at a window 5 meters talla falling ball passes by the window 0.3 sec. From how high above the top of the window was the ball released?

    11.8 m

  • 3

    A block is pulled to the right at a constant velocity by a 10-b force acting 30 degree above the horizontal. The coefficient of sliding friction between the block and surfaces is 0.5. What is the weight of the block? Assume all of the forces on the block to act at its center,

    22.32 lbs

  • 4

    900 lbs

    900 lbs

  • 5

    A flywheel whose angular acceleration is constant and equal to 2 rad/sec square rotates through an angle of 100 radians in 5 sec. How long had it been in motion at the beginning of the 5 sec interval if it started from rest?

    7.5 sec

  • 6

    What force is required to punch a 0.75-inch circular hole through a piece of 5/8-inch thick steel plate? the ultimate shear strength is 42 ksi

    61,850 lbs

  • 7

    A welded steel cylindrical drum made of a 10-mm plate diameter that would be caused by an internal pressure of has en intemal diameter of 1.20 m. Compute ins MPa kasume that Poisson's ratio is 0.30 and E=200 GPa

    0.428 m

  • 8

    What is the dimensionless number that is used to describe by viscosity of fluid?

    Reynolds Number

  • 9

    What refers to the formation and collapse of small bubbles of vapors in liquid which caused by combination of reduced pressure and increased velocity in the fluid?

    Cavitation

  • 10

    In the design of waterways, the "hydraulic jump" is sometimes used for

    energy dissipation

  • 11

    33. At what critical speed which the flow of long cylindrical pipe of diameter 1.5 cm becomes turbulent considering that the temperature is 20°C, viscosity is 1.0\times10^-1 Pa-sec, and critical Reynolds number is 2000.

    0.155 m/sec

  • 12

    A hygrometer is an instrument to measure

    relative humidity

  • 13

    How many kilograms are there in 10 slugs?

    146

  • 14

    The physical quantity which produces angular acceleration is called

    Torque

  • 15

    A type of loading which occurs when the load is NOT applied through the center of gravity?

    Modulus od elesticity

  • 16

    The ration of the dynamic viscosity of a fluid to its mass density is known as

    Kinematic viscosity

  • 17

    The viscosity of a fluid is that property which determines the amount of its resistance against

    Shearing force

  • 18

    The ratio of the unit weight of the fluid to the unit weight of water at 4°C is known as

    Specific gravity

  • 19

    The effect of cohesion between particles of the fluid at its free surfaceis known as _______

    Cohesion

  • 20

    Gases have no definite

    volume

  • 21

    What is the dimensionless number that is used to describe by yiscosity of fluid?

    Reynolds number

  • 22

    The units for dynamic viscosity is

    Pa-s

  • 23

    Impulse is the change in

    momentum

  • 24

    wagon is uniformly accelerating from rest. The net force acting on the wagon is

    constant

  • 25

    Find formula for the minimum velocity for a given range of a projectile fired on a level plane.

    v=√gh