Give example of something we think of as work in everyday circumstances that is not work in the scientific sence

Q: 3. A 5 kg block is initially at rest on a horizontal frictionless surface. Two forces, F = (4 – x2)i…

A:

Q: A student in a lab exerts a force of 25 N on an angle to pull a block by a distance of 48 cm. If a…

A: Given data :- Force F = 25 N Displacement d = 48 cm = 0.48 m Work done W = 11 J

Q: Work is a scalar quantity. Explain.

A: A scalar quantity is the one which has magnitude but not direction. The work is done when a force…

Q: Why is work a dot product of force and displacement, and not a cross product

A: Work is scaler quantity which has only magnitude, no direction.  Force and displacement are vector…

Q: When Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One…

A:

Q: 3. See the figure below. If a 3 kg mass is moved up the first frictionless incline and the same 3 kg…

A:

Q: Answer the following and explain it in simple words 1. Why is more work done in climbing a hill…

A: Work done is change in energy or force times displacement. 1. While walking on level road , there is…

Q: 16. Which of the following is/are incorrect about the concept of business? I) If the sign of the…

A: We are given 3 statements about work done. The thermodynamics first law is about law of conservation…

Q: 1. How does the work required to stretch a spring 2.0cm from Its unstressed length compare with the…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: the basics of work and energy.

A: Work is the product of the displacement of the body with the force acting on it in the direction of…

Q: 20. A small ball is dropped from a height which gives it a gravitational potential energy of 100 J.…

A:

Q: Part A You pick up a 2.5 kg can of paint from the ground and lift it to a height of 1.3 mi How much…

A: The 2.5 kg can of paint has a weight given as F=mgF=2.5×9.8F=24.5 N This weight of the can is the…

Q: 2. Force and displacement are the two essential elements of work. Write true if the statement is…

A: False.  Reason- work done depends upon force displacement and the angle between force and…

Q: 1. Differentiate work, energy and forces and answer some misconceptions about it.

A: Power (PPP) Rate at which work is done (or energy is transferred). SI units of \text {Watts…

Q: 2. A spring on a horizontal surface can be stretched and held 0.5 meters from its equilibrium…

A: Given: The stretching in the spring due to force 50 N is 0.5 m from the equilibrium.

Q: Which of the following statements are FALSE? A Work is a scalar physical quantity. B. Work can be…

A: Work done is defined as product of force and displacement in direction of applied force . If force…

Q: . An alien spacecraft wishes to visit Earth, but in order to do so it must first escape its hom…

A: The velocity of an object refers to its rate of change of position as a vector quantity. escape…

Q: 1. Draw a situation where a force is doing zero work. Explain why the force is doing no work,…

A: To explain a situation where work done by a force is zero.

Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…

A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…

Q: Calculate the work done from x=0.0 to x = 7.0 m by the one-dimensional force depicted in the…

A: Note:- The area under the force-displacement graph gives the work done.Given- the graph of one…

Q: 2. While training for the upcoming UAAP season, a 60-kg athlete does 30 pushups in a minute,…

A:

Q: 1. The shot is 1.2 m above the ground at 10 m/s when a shot-putter fires a 5 kg shot. It reaches 5 m…

A: Initial kinetic energy = (1/2)×mv2  Ki = (1/2)×5×102 = 250 J  Initial potential energy = mgh  Ui =…

Q: Can work ever be negative? Group of answer choices Yes. If the force and displacement have opposite…

A: According to question we need to find--- work done ?

Q: A 10 kg package is delivered to your house. Use one complete sentence to describe an example of how…

A: SOlution: expain the work done on the book

Q: Describe a situation where an object is in motion but no physical work is being accomplished.…

A: Consider the situation where a person carrying a suitcase on his head and walking. Now for an…

Q: Two people of the same mass climb the same set of stairs. Person A climbs the stairs in 25 s. Person…

A: Let mass of each person = m Weight of each person = mg Time taken by A to climb the set of stairs =…

Q: 12. Consider the following situation: A car is moving with a high speed at the bottom of a hill…

A: Assuming that at bottom of hill potential energy is zero. Initially when car age at bottom of hill…

Q: . Which of the following statements represent example of situation showing work? a. A child applies…

A: Work is said to be done when an object is displaced on applying external force . So ,for work…

Q: . Can a normal force on an object ever do work on the object? Explain.

A: The work done by an object is given as :   Work = Force × displacementW  = Fdcosθ

Q: 4. A bag originally 60 kg of flour is lifted through a vertical distance of 9 m. While it is being…

A:

Q: 12. Which of the following statements represent example of situation showing work? Select one: a. A…

A: Given,  Out of the given situations, which is showing work.  A) child applies force and become tired…

Q: d in terms of magnitudes, so it is never negative.

A:

Q: 4. Identify a case where an object is moving over a surface with friction, but the frictional force…

A: The frictional force is the force that acts between the surface of contacts between two objects.…