Description : Resultant force acting on object and rate of change of linear momentum are A. inversely related B. not related at all C. directly related D. directly proportional
Last Answer : directly related
Description : Choose the only scalar quantity from the following: (a) Energy (b) Torque (c) Momentum (d) Force
Last Answer : Ans:(a)
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 : 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 : Which of the following is a scalar quantity ? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential
Last Answer : Electrostatic potential
Description : What physical quantity is expresed by rate of change of angular momentum and gives its si unit?
Last Answer : Rate of change means that you divide something by time ("perunit time" or "per second"), so you would use the units of angularmomentum, divided by seconds.I am not aware of any special name forthis concept.
Description : How is the transfer of momentum related to force?
Last Answer : A force is required to change momentum.An "impulse" refers tothe amount of momentum transferred; impulse can be defined as forcex time (more precisely: the corresponding integral).
Description : The mass of a body is different from its weight because 1. mass is a variable quantity whereas weight is constant 2. mass varies very little at different places whereas weight varies a lot 3. mass is constant but weight decreases as ... is/are correct? (a) 1 only (b) 2 and 4 (c) 3 only (d) 3 and 4
Last Answer : Ans:(d)
Description : Pick out the vector quantity (a) Energy (b) Angular momentum (c) Angle (d) None of these
Last Answer : Ans:(b)
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 : Which one of the following is a vector quantity? (1) Momentum (2) Pressure (3) Energy (4) Work
Last Answer : (1) Momentum Explanation: A vector quantity is a quantity that is fully described by both magnitude and direction.
Description : Which of the following is a vector quantity? (A) Energy (B) Mass (C) Momentum (D) Angle
Last Answer : (C) 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 : A force of 50 N acts on a body for 1/10 s. Find the change in the momentum of the body. -Maths 9th
Last Answer : NEED ANSWER
Last Answer : F = 50 N t = 1 / 10 mv - mu = ? F = m ( v - u ) / t ( newton ' s 2 nd law of motion ) 50 N = mv - mu / 1/10 sec 500 kg m / s = v - u
Description : When a bug hits a windshield which is larger the force of the bug hitting the windshield or the force of the windshield hitting the bug Which is larger the change in momentum of the bug or the change?
Last Answer : The change
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 : Which of the following physical quantities changes or tends to change the state of rest or of uniform motion of a body in a straight line? (1) Momentum (2) Mass (3) Force (4) Inertia
Last Answer : (3) Force Explanation: Force is an agent which changes or tends to change the state of rest or of uniform motion of a body.
Description : Interaction that causes an object's momentum to change is A. velocity B. acceleration C. power D. force
Last Answer : force
Description : The rate of change of moment of momentum represents the __________ by the fluid. (A) Torque applied (B) Force exerted (C) Work done (D) Power developed
Last Answer : (A) Torque applied
Description : The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called (A) Newton's law of motion (B) Newton's law of cooling (C) Newton's law of viscosity (D) Newton's law of resistance
Last Answer : Answer: Option D
Description : Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia
Last Answer : ANSWER: Y -- MOMENTUM
Description : Which of Newton’s laws is related to transfer of momentum when a bat strikes a ball ?
Last Answer : Newton's third law of motion is the one related to the transfer of momentum when a bat strikes a ball. His third law of motion tells us that every action has an equal and opposite reaction.Newton's ... s third law of motion is the one related to the transfer of momentum when a bat strikes a ball.
Description : The cost related to the variable resources and change with the output
Last Answer : Ans. Variable Costs
Description : If the fixed costs of a factory producing candles is Rs 20,000, selling price is Rs 30 per dozen candles and variable cost is Rs 1.5 per candle, what is the break-even quantity? (1) 20000 (2) 10000 (3) 15000 (4) 12000
Last Answer : (1) 20000 Explanation: Breakeven quantity is the number of incremental units that the firm needs to sell to cover the cost of a marketing program or other type of investment. It is given by the formula: BEQ = FC / (P-VC) Where ... per unit = 30/12 = Rs. 2.5 So 20000/ (2.5-1.5) = 20000/1= Rs. 20,000
Description : )If the average total cost is Rs.54, total fixed cost is Rs.45000 and quantity produced is 2500 units, find the average variable costs (in Rs.) of the firm - (1) 24 (2) 18 (3) 36 (4) 60
Last Answer : (3) 36 Explanation: The standard method of calculating average variable cost is to divide total variable cost by the quantity, illustrated by this equation : Average Variable Cost = Total Variable Cost/ Quantity of ... , Average Total Cost = 45000/2500 = 18 So Average Variable Cost = 54 - 18= 36
Description : Production cost which increase with the quantity of product made is called ? 1. Absorption Cost 2. High Production Cost 3. Non-fixed cost 4. Variable cost 5. None of these
Last Answer : Variable cost
Description : If the excavation of earth is done manually then it costs Rs. 10 per cum. A machine can excavate at a fixed cost of Rs. 4000 plus a variable cost of Rs. 2 per cum. The quantity of earth for which the cost ... the cost of manual excavation is (A) 500 cum (B) 1000 cum (C) 1500 cum (D) 2000 cum
Last Answer : (A) 500 cum
Description : A cost independent of the quantity of goods and services produced a). Variable cost b). Fixed cost c). Opportunity cost d). Marginal cos
Last Answer : b). Fixed cost
Last Answer : 20000
Description : If the average total cost is Rs. 54, total fixed cost is Rs. 45000 and quantity produced is 2500 units, find the average variable costs (in Rs.) of the firm : (1) 24 (2) 18 (3) 36 (4) 60
Last Answer : 36
Description : A hammer gains 50 Ns momentum in 0.05 sec. The average force on the hammer will be a.500 N b.2000 N c.1500 N d.107 dynes e.1000 N
Last Answer : e. 1000 N
Description : A particle is of wieght 8 kg. When it is allowed to fall under the force of gravity its momentum at the time t = 2 sec would be a.8 kg sec b.32 kg sec c.2 kg sec d.16 kg sec e.48 kg sec
Last Answer : d. 16 kg sec
Description : ML2T-2 could be the dimension of a.107 dynes b.moment of force c.viscosity d.mass moment of inertia e.momentum
Last Answer : b. moment of force
Description : Which of the following pair will have identical dimensions? a.Pressure and surface tension b.Work and kinetic energy c.Momentum and force d.Moment of inertia and angular momentum e.None of the above
Last Answer : c. Momentum and force
Description : Assertion When a charged particle moves perpendicular to a uniform magnetic field then its momentum remains constant. Reason Magnetic force acts perpe
Last Answer : Assertion When a charged particle moves perpendicular to a uniform magnetic field then its momentum ... Assertion is false but Reason is true.
Description : What is the Momentum law that states that the total momentum of an object is constant if no outside force acts on it?
Last Answer : Law of inertia? Newtons first law.
Description : If two bodies, one heavy and one light, are acted upon by the same force for the same time, then both bodies acquire the same (a) velocity (b) momentum (c) acceleration (d) speed
Description : Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum
Last Answer : (1) Moment of inertia and moment of a force
Description : Plank's constant has the dimensions of (1) energy (2) linear momentum (3) angular momentum (4) force
Last Answer : (1) energy Explanation: The Planck's constant (h) can be defined as a pro-portionality constant that relates the energy (E) of a photon to the frequency (?) of its associated electro-magnetic ... Planck constant is named after Max Planck, the instigator of quantum theory, who discovered it in 1900.
Description : While catching a ball, a player pulls down his hands to lower the - (1) force/cy (2) momentum (3) impulse (4) catching time
Last Answer : (3) impulse
Description : Which of the following physical quantities has no dimension? (1) Force (2) Momentum (3) Impulse (4) Angle
Last Answer : (4) Angle Explanation: Quantities having units, but no dimensions: Plane angle, angular displacement, solid angle. These physical quantities possess units but they does not possess dimensional formulas.
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 no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states that? (1) Newton’s first law (2) Newton’s Second Law (3) Newton’s Third Law (4) Principle of conservation of linear momentum
Last Answer : (4) Principle of conservation of linear momentum Explanation: Conservation of linear momentum. The principle that the linear momentum of a system has constant magnitude and direction if the system is subjected to no external force. Also called law of conservation of linear momentum
Description : When net torque is zero, will be constant - (1) force (2) angular momentum (3) linear momentum (4) acceleration
Last Answer : (2) angular momentum Explanation: Since a torque (rate of change of angular momentum analogous to force) applied over time is equivalent to a change in angular momentum, then if torque is zero, angular momentum is constant.
Description : If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this? (1) Newton first law (2) Newton second law (3) Newton third law (4) Principle of conservation of linear momentum
Last Answer : (4) Principle of conservation of linear momentum Explanation: Principle of conservation of linear momentum states If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant.
Description : Which of the following pairs of physical quantities have the same dimensions? (1) Force and Power (2) Work and Power (3) Work and Energy (4) Momentum and Power
Last Answer : (3) Work and Energy Explanation: The term energy is used to describe the capacity of a system to do work on another system. Energy of all types (Surface Tension, Kinetic, Potential etc.) have the same dimension and unit as that of Work.
Description : While catching a ball, a player pulls down his hands to lower the – (1) force (2) momentum (3) impulse (4) catching time
Last Answer : (2) momentum Explanation: A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand's backward with the ball while taking a ... stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.