Home
Class 11
PHYSICS
Pick out the only vector quantity in the...

Pick out the only vector quantity in the following list:
Temperature, pressure, impulse, time, power , total path length, energy, gravitational potential , coefficient of friction, charge.

Text Solution

AI Generated Solution

To solve the problem of identifying the only vector quantity from the provided list, we can follow these steps: ### Step 1: Understand Vector and Scalar Quantities - **Definition of Vector Quantity**: A vector quantity has both magnitude and direction. - **Definition of Scalar Quantity**: A scalar quantity has only magnitude and no direction. ### Step 2: Analyze Each Option - **Temperature**: This is a scalar quantity as it has no direction. ...
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    NCERT ENGLISH|Exercise EXERCISE|32 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NCERT ENGLISH|Exercise EXERCISE|21 Videos

  • MOTION IN A STRAIGHT LINE

    NCERT ENGLISH|Exercise EXERCISE|28 Videos

Similar Questions

Explore conceptually related problems

Which of the following is not a scalar quantity ? a) temperature b) Coefficient of friction c) charge d) Impulse

Consider the quantities , pressure, power, energy impulse, gravitational potential, electrical charge , temperature, area,Out of these, the only vector quantities are .

Which of the following statements is incorrect? a) Path length is a scalar quantity whereas displacement is a vector quantity. b) The displacement depends only on the end points whereas path length depends on the actual path followed. c) The path length is always positive whereas displacement can be positive, negative and zero. d) The path length is always positive whereas displacement can be positive, negative and zero.

Anwer carefully, with reasons: a) In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the balls (i.e. when they are in contact)? Is the total linear momentum conserved during the short time of an elastic collision of two balls? c) What are the answers to a) and b) for an inelastic collision? d) If the potenital energy of two billiard balls depends only on the separation distance between their centers, is the collision elastic or inelastic? (note we are talking here of potential energy corresponding to the force during collision, not gravitational potential energy).

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion At any instant the magnitude of rate of change of potential energy of the projectile of mass 1 kg is numerically equal to magnitude of a.v (where a is acceleration due to gravity and v is velocity at that instant) Reason The graph representing power delivered by the gravitational force acting on the projectile with time will be straight line with negative slope.

Three identical spheres each of radius a and mass m are placed such that their centers lie on the vertices of an equilateral triangle of side length 3a. The spheres are non conducting and each one carries a charge Q uniformly distributed over its surface. All the three spheres are simultaneously released and after releasing they move under the influence of their mutual electrostatic forces only. Based on this information, answer the following questions : The total electrostatic potential energy stored in the system at the time of releasing is :

A metal foil is at a certain distance from an isotropic point source that emits energy at the rate P. Let us assume the classical physics to be applicable. The incident light energy will be absorbed continuously and smoothly. The electrons present in the foil soak up the energy incident on them. For simplicity , we can assume that the energy incident on a circular path of the foil with radius 5xx10^(-11) m (about that of a typical atom ) is absorbed by a single electron. The electron absorbs sufficient energy to break through the binding forces and comes out from the foil. By knowing the work function, we can calculate the time taken by an electron to come out i.e., we can find out the time taken by photoelectric emission to start. As you will see in the following questions, the time decay comes out to be large, which is not practically observed. The time lag is very small. Apparently, the electron does not have to soak up energy . It absorbs energy all at once in a single photon electron interaction. If power of the source P is 1.5 W and distance of the foil from the source is 3.5 m, the energy received by an electron per second is

We have a disc of neglligible thickness and whose surface mass density varies as radial distance from centre as sigma=sigma_(0)(1+r/R) , where R is the radius of the disc. Specific heat of the material of the disc is C . Disc is given an angular velocity omega_(0) and placed on a horizontal rough surface such that the plane of the disc is parallel to the surface. Coefficient of friction between disc and suface is mu . The temperature of the disc is T_(0) . Answer the following question on the base of information provided in the above paragraph If the kinetic energy lost due to the friction between disc and surface is absorbed by the disc the moment heat is generated, by the mass lying at the point where the energy is lost. Assume that there is no radial heat flow in betwen disc particles. Rate of change in temperature at a point lying at r distance away from centre with time, before disc stops rotating, will be ( alpha -magnitude of angular acceleration of rod)

The human ciculatory system can be thought of as a closed system of interconnecting pipes through which fluid is continuously circulated by two pumps the two pumps the right and left verticles of the heart, work as simple two-stroke force pumps. The muscles of the heart regulate the force by contracting and relaxing. the contraction (systole) lasts about 0.2s and a complete systole/diastole (contraction/relaxation) cycle lasts about 0.8s. For flood pressures and speeds in the normal range. the volume flow rate of blood through a blood vessel is directly proportional tot he pressure difference over a length of the vessel and to the fourth power of the radius of the vessel. The total mechanical energy per unit volume of blood just as it leaves the heart is E//V=rhogh+P+rhov^(2) Q. What is the gravitational potential energy of 8cm^(3) of blood in a 1.8 m tall man, in a blood vessel 0.3 m above his heart? (Note: The man's blood pressure is 1.3xx10^(4)N//m^(2) )

NCERT ENGLISH-MOTION IN A PLANE -EXERCISE
  1. State, for each of the following physical quantities, if it is a scala...

    Text Solution

    |

  2. Pick out the two scalar quantities in the following list: force, angul...

    Text Solution

    |

  3. Pick out the only vector quantity in the following list: Temperature...

    Text Solution

    |

  4. State with reasons, whether the following algebraic operations with sc...

    Text Solution

    |

  5. Read each statement below carefully and state with reasons, with it is...

    Text Solution

    |

  6. Establish the following inequalities geometrically or otherwise , (...

    Text Solution

    |

  7. Given vec A + vec B+ vec C + vec D =0, which of the following stateme...

    Text Solution

    |

  8. Three girls skating on a circular ice ground of radius 200 m start fr...

    Text Solution

    |

  9. A cyclist starts from the center O of a circular park of radius 1km, r...

    Text Solution

    |

  10. On an open ground, a motorist follows a track that turns to his left b...

    Text Solution

    |

  11. A passenger arriving in a new town wishes to go from the station to a ...

    Text Solution

    |

  12. Rain is falling vertically with a speed of 30 ms^(-1) . A woman rides...

    Text Solution

    |

  13. A man can swim with a speed of 4kmh^(-1) in still water. He crosses a ...

    Text Solution

    |

  14. In a harbour, wind is blowing at the speed of 72 km //h and the flag ...

    Text Solution

    |

  15. The ceiling of a long hall is 25 m high. What is the maximum horizont...

    Text Solution

    |

  16. A cricketer can throw a ball to a maximum horizontal distance of 100m...

    Text Solution

    |

  17. A stone tied to end of a string 80 cm long is whirled in a horizontal...

    Text Solution

    |

  18. An aircraft executes a horizontal loop of radius 1 km with a steady sp...

    Text Solution

    |

  19. Read each statement below carefully and state, with reasons, if it is ...

    Text Solution

    |

  20. The position of a particle is given by vec r= 3.0 t hat i - 2.0 t^2 h...

    Text Solution

    |