General
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Physics

A branch of physics dealing with motion without considering its causes is known as ....

PhysicsGeneral

  1. Kinematics
  2. mechanics
  3. dynamics
  4. Hydrodynamics

    Answer:The correct answer is: Kinematics

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    An impulsive force of 100 N acts on a body for 1 sec What is the change in its linear momentum ?

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    A particle moves from A to B and then it moves from  to  as shown in figure. Calculate the ratio between path length and displacement.

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    Which of the following relations is true

    Y equals 2 eta open parentheses 1 plus sigma close parentheses rightwards double arrow sigma equals fraction numerator 0.5 Y minus eta over denominator eta end fraction

    Which of the following relations is true

    physics-General
    Y equals 2 eta open parentheses 1 plus sigma close parentheses rightwards double arrow sigma equals fraction numerator 0.5 Y minus eta over denominator eta end fraction
    General
    physics-

    The following data were obtained when a wire was stretched within the elastic region Force applied to wire 100 N
    Area of cross-section of wire 10 to the power of negative 6 end exponent m to the power of 2 end exponent
    Extensional of wire 2 cross times 10 to the power of negative 9 end exponent m
    Which of the following deductions can be correctly made from this data?
    I. The value of Young’s Modulus is 10 to the power of 11 end exponent N blank m to the power of negative 2 end exponent
    II. The strain is 10 to the power of negative 3 end exponent
    III. The energy stored in the wire when the load is applied is 10 J

    Stress = fraction numerator 100 N over denominator 10 to the power of negative 6 end exponent m to the power of 2 end exponent end fraction equals 10 to the power of 8 end exponent blank N m to the power of negative 2 end exponent
    Strain equals blank fraction numerator 2 cross times 10 to the power of negative 3 end exponent over denominator 2 end fraction equals 10 to the power of negative 3 end exponent
    Young modulus
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    Energy stored = fraction numerator 1 over denominator 2 end fraction cross times 100 blank cross times 2 cross times 10 to the power of negative 3 end exponent blank J
    = 10minus1H = 0.1J

    The following data were obtained when a wire was stretched within the elastic region Force applied to wire 100 N
    Area of cross-section of wire 10 to the power of negative 6 end exponent m to the power of 2 end exponent
    Extensional of wire 2 cross times 10 to the power of negative 9 end exponent m
    Which of the following deductions can be correctly made from this data?
    I. The value of Young’s Modulus is 10 to the power of 11 end exponent N blank m to the power of negative 2 end exponent
    II. The strain is 10 to the power of negative 3 end exponent
    III. The energy stored in the wire when the load is applied is 10 J

    physics-General
    Stress = fraction numerator 100 N over denominator 10 to the power of negative 6 end exponent m to the power of 2 end exponent end fraction equals 10 to the power of 8 end exponent blank N m to the power of negative 2 end exponent
    Strain equals blank fraction numerator 2 cross times 10 to the power of negative 3 end exponent over denominator 2 end fraction equals 10 to the power of negative 3 end exponent
    Young modulus
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    Energy stored = fraction numerator 1 over denominator 2 end fraction cross times 100 blank cross times 2 cross times 10 to the power of negative 3 end exponent blank J
    = 10minus1H = 0.1J
    General
    physics-

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    Per unit volume energy stored
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    Per unit volume energy stored
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    given l equals L cross times 1 percent sign
    or l equals fraction numerator L over denominator 100 end fraction cross times s t o r e d blank e n e r g y
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    Breaking force proportional to pi r to the power of 2 end exponent
    If thickness (radius) of wire is doubled then breaking force will become four times

    If the thickness of the wire is doubled, then the breaking force in the above question will be

    physics-General
    Breaking force proportional to pi r to the power of 2 end exponent
    If thickness (radius) of wire is doubled then breaking force will become four times