Physics-
General
Easy

Question

The ratio of earth’s orbital angular momentum (about the sun) to its mass is 4.4 × 1015 m2/s. The area enclosed by earth’s orbit is approximately

  1. 7 × 1022 m2    
  2. 6.02 × 1023 m2    
  3. 7 × 1023 m2    
  4. none of these    

The correct answer is: 7 × 1022 m2


    fraction numerator L over denominator M subscript e end subscript end fraction = 4.4 ´ 1015Þ fraction numerator M subscript e end subscript v r over denominator M subscript e end subscript end fraction = 4.4 ´ 1015
    Þ open parentheses fraction numerator 2 pi r over denominator 365 cross times 24 cross times 60 cross times 60 end fraction close parentheses r = 4.4 ´ 1015
    Þ p r2 = 6.938 ´ 1022 m2.

    Related Questions to study

    General
    Physics-

    The figure shows a uniform smooth solid cylinder A of radius 4 m rolling without slipping on the 8 kg plank which in turn is supported by a fixed smooth surface. Block B, is known to accelerate down with 6 m/s2.
    (Take g = 10 m/s2)

    What is the angular acceleration of the cylinder ?

    The figure shows a uniform smooth solid cylinder A of radius 4 m rolling without slipping on the 8 kg plank which in turn is supported by a fixed smooth surface. Block B, is known to accelerate down with 6 m/s2.
    (Take g = 10 m/s2)

    What is the angular acceleration of the cylinder ?

    Physics-General
    General
    Maths-

    If the bisector of angle A of a DABC meets BC at D and AB=c,BC=a CA=b then D divides BC in the ratio…

    For such questions, we should know about angle bisector properties. While taking ratio, we have to careful that we are taking ratio of adjacent sides.

    If the bisector of angle A of a DABC meets BC at D and AB=c,BC=a CA=b then D divides BC in the ratio…

    Maths-General

    For such questions, we should know about angle bisector properties. While taking ratio, we have to careful that we are taking ratio of adjacent sides.

    General
    Maths-

    The circle passes through three vertices of a triangle is called…

    For such questions, we should know different definitions related to circle and triangle.

    The circle passes through three vertices of a triangle is called…

    Maths-General

    For such questions, we should know different definitions related to circle and triangle.

    parallel
    General
    Maths-

    The point which is equidistant from three vertices of a Dle is…

    For such questions, we should know different definitions related to circle and triangle.

    The point which is equidistant from three vertices of a Dle is…

    Maths-General

    For such questions, we should know different definitions related to circle and triangle.

    General
    Maths-

    The distance of P (3, 5) from x-axis is

    The distance of a point from any axis is given by the respective coordinate of the point.

    The distance of P (3, 5) from x-axis is

    Maths-General

    The distance of a point from any axis is given by the respective coordinate of the point.

    General
    Maths-

    The cartesian equation of the plane whose equation is Error converting from MathML to accessible text. where l,m are scalars is

    The cartesian equation of the plane whose equation is Error converting from MathML to accessible text. where l,m are scalars is

    Maths-General
    parallel
    General
    Maths-

    If Error converting from MathML to accessible text. then Error converting from MathML to accessible text.

    If Error converting from MathML to accessible text. then Error converting from MathML to accessible text.

    Maths-General
    General
    Maths-

    The Ratio in which Error converting from MathML to accessible text. divides the join of Error converting from MathML to accessible text. and Error converting from MathML to accessible text. is

    The Ratio in which Error converting from MathML to accessible text. divides the join of Error converting from MathML to accessible text. and Error converting from MathML to accessible text. is

    Maths-General
    General
    Maths-

    The vector Error converting from MathML to accessible text. lies in the plane of the vectors Error converting from MathML to accessible text. and Error converting from MathML to accessible text. and bisects the angle between b and c. then which one of the following gives possible values of a and b

    The vector Error converting from MathML to accessible text. lies in the plane of the vectors Error converting from MathML to accessible text. and Error converting from MathML to accessible text. and bisects the angle between b and c. then which one of the following gives possible values of a and b

    Maths-General
    parallel
    General
    Physics-

    In the figure shown, the plank is being pulled to the right with a constant speed v. If the cylinder does not slip then:

    In the figure shown, the plank is being pulled to the right with a constant speed v. If the cylinder does not slip then:

    Physics-General
    General
    Physics-

    A thin rigid uniform circular disc rolls without slipping on a horizontal rigid surface (or the ground). At a certain instant, its position w.r.t. ground frame is as shown in the figure.

    A thin rigid uniform circular disc rolls without slipping on a horizontal rigid surface (or the ground). At a certain instant, its position w.r.t. ground frame is as shown in the figure.

    Physics-General
    General
    Physics-

    A wheel is rolling on a horizontal plane. At a certain instant, it has velocity ‘v’ and acceleration ‘a’ of c.m. as shown in the figure. Acceleration of

    A wheel is rolling on a horizontal plane. At a certain instant, it has velocity ‘v’ and acceleration ‘a’ of c.m. as shown in the figure. Acceleration of

    Physics-General
    parallel
    General
    Physics-

    A spool of wire rests on a horizontal surface as shown in figure. As the wire is pulled, the spool does not slip at contact point P. On separate trails, each one of the forces F1, F2, F3 and F4 is applied to the spool. For each of these forces the spool

    A spool of wire rests on a horizontal surface as shown in figure. As the wire is pulled, the spool does not slip at contact point P. On separate trails, each one of the forces F1, F2, F3 and F4 is applied to the spool. For each of these forces the spool

    Physics-General
    General
    Physics-

    A uniform circular disc of radius r is placed on a rough horizontal surface and given a linear velocity v0 and angular velocity w0 as shown. The disc comes to rest after moving some distance to the right. It follows that

    A uniform circular disc of radius r is placed on a rough horizontal surface and given a linear velocity v0 and angular velocity w0 as shown. The disc comes to rest after moving some distance to the right. It follows that

    Physics-General
    General
    Physics-

    A thin rod of mass m and length l is bent into a V-shaped frame at its mid point as shown in the figure. The moment of inertia of the system about an axis passing through O perpendicular to the plane of the frame is equal to

    A thin rod of mass m and length l is bent into a V-shaped frame at its mid point as shown in the figure. The moment of inertia of the system about an axis passing through O perpendicular to the plane of the frame is equal to

    Physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.