Which among the following is the fundamental quantity ? (1) Volume (2) Time (3) Velocity (4) Force

3 Answers

Answer :

Time

Answer :

1

Answer :

Force

Related questions

Description : Which among the following is the fundamental quantity? (1) Volume (2) Time (3) Velocity (4) Force

Last Answer : (2) Time Explanation: The fundamental qualities of Physics are the seven basic quantities that can be used to express all other physical quantities. These are as follows: Length: Metre, Heat: ... Luminous Intensity: Candela, Mass: Kilogram, Electric Current: Ampere, and Amount of substance: Moles.

Description : Which of the following is a scalar quantity? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential

Last Answer : (3) Angular momentum Explanation: The electrostatic potential at any point in an electric field is defined as the work done in bringing a unit positive charge from infinity to that point against the electric force of the field.

Description : Which of the following is not a vector quantity? (1) Acceleration (2) Electric current (3) Force (4) Velocity

Last Answer : (2) Electric current Explanation: For a physical quantity to be termed a vector quantity, having magnitude and direction is not enough.

Description : Which of the following is a scalar quantity ? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential

Last Answer : Electrostatic potential

Description : Who among the following is the scalar quantity______. (1) force (2) pressure (3) velocity (4) acceleration

Last Answer : (2) pressure Explanation: Pressure is a scalar quantity. It relates the vector surface element with the normal force acting on it.

Description : Quality of a musical note depends on – (1) Fundamental frequency (2) Amplitude of the wave (3) Harmonics present (4) Velocity of sound in the medium

Last Answer : (3) Harmonics present Explanation: Sound "quality" or "timbre" describes those characteristics of sound which allow the ear to distinguish sounds which have the same pitch and loudness. Timbre is mainly ... and the attack-decay envelope of the sound. Harmonic content is the most important of these.

Description : Quality of a musical note depends on (1) Fundamental frequency (2) Amplitude of the wave (3) Harmonics present (4) Velocity of sound in the medium

Last Answer :  Harmonics present

Description : Among the four fundamental forces, only one force governs your daily life almost entirely. Justify the statement by stating that force.

Last Answer : Among the four fundamental forces, only one force governs your daily life almost entirely. Justify the statement by stating that force.

Description : Which of the following is scalar quantity a.Area of triangle b.Displacement of a particle c.Acceleration of car d.Force of friction e.Velocity a gear

Last Answer : a. Area of triangle

Description : Pick out the scalar quantity (a) Force (b) Pressure (c) Velocity (d) Acceleration

Last Answer : Ans:(b)

Description : Which of the following is not a vector quantity? (A) Weight (B) Velocity (C) Acceleration (D) Force

Last Answer : (A) Weight

Description : A vector quantity whose direction is the same as the direction of the velocity  a. Force  b. Momentum  c. Friction  d. Resultant

Last Answer : Momentum

Description : When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass

Last Answer : ANSWER: W -- MOMENTUM

Description : Which one is a vector quantity out of the followings?  A. Energy B. Volume C. Area D. Force

Last Answer : Which one is a vector quantity out of the followings?  Force

Description : Which of the following is not a vector quantity? (1) Speed (2) Velocity (3) Torque (4) Displacement

Last Answer : (1) Speed Explanation: Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. It does not keep track of direction. In contrast, velocity is a vector quantity as it is direction aware.

Description : Which of the following is not a vector quantity ? (1) Speed (2) Velocity (3) Torque (4) Displacement

Last Answer : Speed

Description : Which among the following is a vector quantity? (1) Heat (2) Angular momentum (3) Work (4) Time

Last Answer : (2) Angular momentum Explanation: Angular momentum is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.

Description : Why is there no fifth fundamental force - Or should we keep looking?

Last Answer : It's funny that you asked this. This is a question I've contemplated posting here on ask-public. I think there's no reason to assume there are only the four. Who's to say? We don't ... to another force of nature. I mean, something is causing the expansion of our universe to increase in speed.

Description : The weakest of all fundamental forces is – (1) Gravitational force (2) Electrostatic force (3) Magnetic force (4) Nuclear force

Last Answer : (1) Gravitational force Explanation: In particle physics, fundamental interactions (sometimes called interactive forces or fundamental forces) are the ways that elementary particles interact with one another. ... weak interaction ("weak nuclear force"), and gravitation. All are non-contact forces.

Description : The weakest of all fundamental forces is (1) Gravitational force (2) Electrostatic force (3) Magnetic force (4) Nuclear force

Last Answer :  Gravitational force

Description : Which among the following is false about work? (1) If displacement is zero, work is zero (2) Work done can be negative (3) It is a vector quantity (4) Its unit is Joule

Last Answer : (3) It is a vector quantity Explanation: Vector, in physics, a quantity that has both magnitude and direction. For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars.

Description : Which of the following is NOT a fundamental quantity? 

Last Answer : Which of the following is NOT a fundamental quantity? (A) Temperature (B) Electric charge (C) Mass (D) Electric current

Description : What is the difference between a fundamental and derived quantity?

Last Answer : Need answer

Description : Why is charge not a fundamental quantity?

Last Answer : Because the measurement of current is more convenient.we may take direct reading of current.

Description : If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule

Last Answer : ANSWER: Y -- TOTAL MOLECULAR KINETIC ENERGY

Description : Rain drops fall from great height. Which among the following statements is true regarding it? (1) they fall with that ultimate velocity, which are different for different droplets (2) they fall with ... velocity on the earth (4) their velocity increases and they fall with same velocity on the earth

Last Answer : (1) they fall with that ultimate velocity, which are different for different droplets Explanation: Any mass is attracted to the Earth by the pull of gravity. Gravity accelerates all objects ... specifically the cross-sectional area presented to the airflow (perpendicular to the direction of travel).

Description : Which one among the following doesn't have any effect on velocity of sound? (1) Pressure (2) Temperature (3) Humidity (4) Density

Last Answer : (3) Humidity Explanation: The speed of sound varies depending on the temperature, pressure, and density of the medium through which the sound waves travel. In most of the cases, it is density ... (or other material). The density of air is affected by atmospheric pressure, temperature, and altitude.

Description : Which one among the following doesn't have any effect on velocity of sound ? (1) Pressure (2) Temperature (3) Humidity (4) Density

Last Answer : Humidity

Description : Rain drops fall from great height. Which among the following statements is true regarding it? (1) they fall with that ultimate velocity, which are different for different droplets (2) they fall ... velocity on the earth (4) their velocity increases and they fall with same velocity on the earthphys

Last Answer : they fall with that ultimate velocity, which are different for different droplets

Description : If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Last Answer : (2) momentum Explanation: If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.

Description : If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Last Answer : (2) momentum Explanation: If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.

Description : How much time is needed for a force of 20 Newtons to change the velocity of a 5 kilogram mass by 4 meters per second?  

Last Answer : ANSWER: 1 SECOND

Description : The time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meters/second is: w) 1.5 seconds x) 6 seconds y) 16.7 seconds z) 150 seconds

Last Answer : ANSWER: W -- 1.5 SECONDS

Description : If a body moves with a constant speed in a circle – (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant

Last Answer : (4) its velocity remains constant Explanation: A body moving with a constant speed in a circle is an example of uniform circular motion. The velocity vector is constant in magnitude but ... magnitude or the direction constitutes a change in the velocity which leads to change in acceleration.

Description : The dimension MLT⁻² corresponds to (1) force (2) work done (3) acceleration (4) velocity

Last Answer : (1) force

Description : What is impulse equal to? (1) Change in momentum (2) Change in force (3) Change in velocity (4) Change in acceleration

Last Answer : (1) Change in momentum Explanation: Impulse is a quantity that describes the effect of a net force acting on an object. The impulsemomentum theorem states that the change in momentum of an object equals the impulse applied to it.

Description : Rate of change of momentum is - (1) Area (2) Pressure (3) Force (4) Velocity

Last Answer : (3) Force Explanation: According to Newton’s Second Law of motion, the rate of change of momentum of an object is directly proportional to the resultant force applied and is in the direction of the resultant force.

Description : Instrument used to measure the force and velocity of the wind is – (1) Ammeter (2) Anemometer (3) Altimeter (4) Audiometer

Last Answer : (2) Anemometer Explanation: An anemometer is a device for measuring wind speed, and is a common weather station instrument. The term is derived from the Greek word anemos, meaning wind, and ... between the pressure and the speed, an anemometer designed for one will give information about both.

Description : A single fixed pulley is used to draw water from a well because – (1) efficiency is 100% (2) velocity ratio is low (3) mechanical advantage is high (4) force is applied in a convenient direction

Last Answer : (4) force is applied in a convenient direction Explanation: A single fixed pulley is used to lift a load upwards by applying efforts downward's. The load and effort move equal distance but in opposite ... apply effort in downward direction. They are used on flag-poles and to draw water from a well.

Description : The force which opposes the relative motion between different layers of liquid or gases is called – (1) Critical Velocity (2) Streamline Flow (3) Terminal Velocity (4) Viscous Force

Last Answer : (4) Viscous Force Explanation: Critical Velocity – The maximum velocity upto which fluid motion is streamline is called Critical Velocity. Streamline Flow – If velocity of all fluid particles is same all the time then it can be said in streamline flow.

Description : Until a force acts on a body, it's velocity is A. zero B. constant C. increasing D. decreasing

Last Answer :  constant

Description : Interaction that causes an object's momentum to change is A. velocity B. acceleration C. power D. force

Last Answer : force

Description : Average force acting on 900 kg car if it's velocity ranges from 5 m s-1 to 30 m s-1 in 12 s is A. 1875 N B. 2000 NC. 3000 N D. 1560 N

Last Answer : 1875 N

Description : Direction of momentum is direction of object's A. mass B. acceleration C. velocity D. frictional force

Last Answer : velocity

Description : Satellite around Earth follows a circular path because A. gravitational force is parallel to velocity B. gravitational force is anti parallel to velocity C. gravitational force is perpendicular to velocity D. gravitational force is anti perpendicular to

Last Answer : gravitational force is perpendicular to velocity

Description : Force due to magnetic field and velocity is A. at right angles to each other B. at acute angles with each other C. at obtuse angle with each other D. antiparallel to each othe

Last Answer : at right angles to each other

Description : An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?

Last Answer : ANSWER: 2 METERS

Description : Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE? w) The acceleration is largest when the oscillating mass is instantaneously at rest. x) The ... of the motion. z) The acceleration is larger when the oscillating mass has its greatest velocity.

Last Answer : ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST 

Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite ... velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above

Last Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY

Description : A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is: w) 0 meters per second x) 0.5 meters per second y) 5 meters per second z) 50 meters per second

Last Answer : ANSWER: X -- 0.5 METERS PER SECOND