An auditorium has organ pipes at the front and at the rear of the hall. Two identical pipes, one at the front and one at the back, have fundamental frequencies of 266.0 Hz at 20.0°C. During a performance, the organ pipes at the back of the hall are at 26.00°C, while those at the front are still at 20.0°C. What is the beat frequency when the two pipes sound simultaneously? Hz

Q: Write a short note on work?

A: Work

Q: Can there be a net force on an object and have no work done to it? Defend your answer.

A: let the net force acting on the object be "F"  and displacement of the object due to this force is…

Q: Does a spring exert the same amount of force regardless of its extension?

A:

Q: What is the work done lifting a 20kg child from the floor to a height of 2m? (Note that a mass of…

A: Given  Mass(m) = 20 kg  Height (h) = 2 m  Acceleration due to gravity near earth surface (g) = 9.8…

Q: m above

A:

Q: A person does some work of 1,000 J in 2 s. His power will be ...... A) 1000W B) 25W C) 500W…

A:

Q: How can the total energy remain the same,but the energy available to do work decrease?

A: The system's total energy is conserved means that that the energy can not be created or destroyed.…

Q: A crate of mass 65 kg is pushed along a floor with a force of 40 N for a distance of 12.11 m.…

A: Introduction :  In this question we are provided with value of force and distance.with these data we…

Q: A 2-kg block of wood is pushed by horizontal force of 10 N to a distance of 3 m. The work done…

A: Given:  Mass of block m= 2 Kg Force applied F= 10N Distance d= 3m

Q: Because of the heat, can work be done?

A: Yes,  absolutely the heat can do work.

Q: What is the difference between work and energy?

A: Introduction: Work is the transferring of some amount of energy with the help of force.

Q: Does the work required to lift a book to a high shelf depend on how fast you lift it? Does the power…

A: 1. No the work does not depend on how fast we left a book to a high shelf. Reason  Since work done…

Q: Show that 2.4 J of work is done when a force of 2.0 N moves a book 1.2 m.

A: Work done = Force x Distance moved by the force = Fd W = 2.0 N x 1.2 m W = 2.4 N.m = 2.4 J

Q: If the speed of a particle is doubled, what happens to its kinetic energy?

A:

Q: Ten and one-half foot-pounds of work is required to compress a spring 6 inches from its natural…

A:

Q: If a runner exerts 350 J of work to make 150 W of power, then how long did it take the runner to do…

A:

Q: A crate of mass 40 kg is pushed along a floor with a force of 120 N for a distance of 26 m.…

A: Given data,  Distance  =  d  Force  =  F        To find ,        Work done

Q: Calculate the work done by a force of 41 Newtons that moves a box through a displacement of 26…

A: Given data:  Force (F) = 41 N Displacement (d) = 26 m Required: Work done (W)

Q: A motionless object could have (a) speed. (b) kinctic energy. (C) elastic energy. d) all of these.…

A: The amount of energy is required for any object to move from one place to another or heat up.

Q: A pair of bullocks exerts a force of 160 N on a plough . The field being ploughed is 18 m long . How…

A:

Q: Distinguish between external work and internal work.

A: Work done can be defined as the product of the force and the displacement.

Q: How much net work must be done to accelerate a 1000 kg 20 m / s to 30 m / s?

A: According to the work energy theorem, the work done must be equal to the change in kinetic energy.…

Q: Is energy conserved when we move?

A:

Q: What is the efficiency of the machine that miraculously converts all the input energy to useful…

A: GivenInput energy = Output useful energy

Q: Calculate the work done when a force of 15 N moves a body by 5 m in its direction.

A: Introduction :  In this question we are provided with value of  force and displacement . with these…

Q: Calculate the work done on a laptop with a mass of 2 kg when it is pushed 0.5 m with a force of 5 N.

A: Given: F = 5 Ns = 0.5 m To find: Work done(W)

Q: wath will be the potential energy of 4 Kg height of 12m. [Take g = 10 m/s² ] mass kept art

A: Write the given values with the suitable variables. m=4 kgh=12 mg=10 m/s2 Here, m is the mass, h is…

Q: Calculate the work performed by a horse pulling a wagon forward with 150 N of force, across a bridge…

A: Force applied by the horse (F) = 150 N Length of bridge (L) = 50 m Mass of horse (M) = 50 kg

Q: How much work is required to lift a 4.5 kg backpack 2.0m to put it on ?

A:

Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 70 km/h ?

A: Given data:  Mass (m) = 1500 kg Initial velocity (Vi) = 70 km/h Final velocity (Vf) = 0  Required:…

Q: A factory worker pushes a 24.0 kg crate a distance of 8.0 m along a level floor at constant velocity…

A: Given Mass of crate = 24 kg It is moved by a distance = 8.0 m during this movement velocity is…

Interference of sound

Seiche

A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.