In case of negative work the angle between the force and displacement is -Physics

In case of negative work the angle between the force and displacement is -Physics
by

1 Answer

Answer :

180° is the correct answer
by

Related questions

In physics, a radian per second squared is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.

Description : In physics, a radian per second squared is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.

Last Answer : ANSWER: Y -- ANGULAR ACCELERATION

In physics, a radian per second is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.

Description : In physics, a radian per second is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.

Last Answer : ANSWER: X -- ANGULAR VELOCITY 

Class 9th CBSE Physics CBQ'S (Case Base Study) Force and Laws of Motion -Physics

Description : Class 9th CBSE Physics CBQ'S (Case Base Study) Force and Laws of Motion -Physics

Last Answer : Isaac Newton's First Law of Motion describes the behavior of a massive body at rest or in uniform linear motion, i.e., not accelerating or rotating. The First Law states, "A body at rest will remain at rest, and a body in ... -------------------------------- More questions to be added shortly...

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

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.

A force of 10 N displaces a body by a distance of 3 m at an angle 60° to its own direction. Find the amount of work done. -Physics 9th

Description : A force of 10 N displaces a body by a distance of 3 m at an angle 60° to its own direction. Find the amount of work done. -Physics 9th

Last Answer : F=10N,S=2m,θ=600 So, Work=F×Scosθ=10×2cos600 =10×2×21​=10J

When the force acts at right angle to the direction of motion, what is the work done by the force -Physics 9th

Description : When the force acts at right angle to the direction of motion, what is the work done by the force -Physics 9th

Last Answer : Let F is the force applied and s is the displacement produce and the angle between force and displacement is θ The work done by this force is given as FW = Fs Cosθ Its unit is joule

Work is equal to which of the following? w) the cross product of force and displacement. x) the product of force times time y) force divided by time z) the dot product of force and displacementWork is equal to which of the following? w) the cross product of force and displacement. x) the product of force times time y) force divided by time z) the dot product of force and displacement

Description : Work is equal to which of the following? w) the cross product of force and displacement. x) the product of force times time y) force divided by time z) the dot product of force and displacement

Last Answer : ANSWER: Z -- THE DOT PRODUCT OF FORCE AND DISPLACEMENT 

Can power be negative if the work done is negative? -Physics

Description : Can power be negative if the work done is negative? -Physics

Last Answer : Negative power in this context would mean the same thing as negative work: negative work means that the system - in this case, the block - is having mechanical energy stolen from it, just as positive work means it's acquiring energy.

Angle through which an object has moved is called it's A. linear displacement B. linear distance C. angular displacement D. angular distance

Description : Angle through which an object has moved is called it's A. linear displacement B. linear distance C. angular displacement D. angular distance

Last Answer : angular displacement

2. In Activity 13.7, how do we think the displacement of rod AB will be affected if (i) current in rod AB is increased; (ii) a stronger horse-shoe magnet is used; and (iii) length of the rod AB is increased? -Physics-10

Description : 2. In Activity 13.7, how do we think the displacement of rod AB will be affected if (i) current in rod AB is increased; (ii) a stronger horse-shoe magnet is used; and (iii) length of the rod AB is increased? -Physics-10

Last Answer : A current carrying conductor when placed in a magnetic field experiences force. The magnitude of this force will increase with the increase in the amount of current, length of conductor and the strength ... AB is increased Stronger horse shoe magnet is used When the length of the rod AB increases

Class 9th CBSE Physics CBQ'S (Case Base Study) Work and Energy -Physics

Description : Class 9th CBSE Physics CBQ'S (Case Base Study) Work and Energy -Physics

Last Answer : The concept of work in physics is much more narrowly defined than the common use of the word. Work is done on an object when an applied force moves it through a distance. In our everyday language, work is related to expenditure ... ----------------------------- More questions to be added shortly...

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?

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

An object is displaced by 10 meters in the direction of applied force. If the applied force is 75 N, What is the work done by the force? -Physics

Description : An object is displaced by 10 meters in the direction of applied force. If the applied force is 75 N, What is the work done by the force? -Physics

Last Answer : (d) 750 joule

A convex lens has a focal length of 10 cm. At what distance from the lens should the object be placed so that it forms a real and inverted image 20 cm away from the lens? What would be the size of the image formed if the object is 2 cm high? With the help of a ray diagram show the formation of the image by the lens in this case. -Physics

Description : A convex lens has a focal length of 10 cm. At what distance from the lens should the object be placed so that it forms a real and inverted image 20 cm away from the lens? What would be the size of ... ? With the help of a ray diagram show the formation of the image by the lens in this case. -Physics

Last Answer : This is the Answe:

The refractive indices of four media A, B, C and D are given in the following table: light-reflection-and-refraction-chapter-wise-important-questions-class-10-science-9 If light, travels from one medium to another, in which case the change in speed will be (i) minimum, (ii) maximum? -Physics

Description : The refractive indices of four media A, B, C and D are given in the following table: light-reflection-and-refraction-chapter-wise-important-questions-class-10-science-9 If light, travels from one medium to another, in which case the change in speed will be (i) minimum, (ii) maximum? -Physics

Last Answer : (i) Minimum change is seen as light moves between 1.50 and 1.52, i.e. B and C. (ii) Maximum change when light moves between 1.33 and 2.40, i.e. A and D.

Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed: (i) at the centre of curvature of a concave mirror (ii) between the pole P and focus F of a concave mirror (iii) in front of a convex mirror (iv) at 2F of a convex lens (v) in front of a concave lens -Physics

Description : Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed: (i) at the centre of curvature of a concave mirror (ii) between the pole P and focus F of ... front of a convex mirror (iv) at 2F of a convex lens (v) in front of a concave lens -Physics

Last Answer : Answer. Nature of image: Real, inverted and same size image is formed at the centre of curvature. Nature of image: Virtual, enlarged and erect image is formed behind the mirror. Nature of image: Virtual ... : Virtual, erect and diminished image is formed between O and F on the same side of object.

Class 9th CBSE Physics CBQ'S (Case Base Study) Motion -Physics

Description : Class 9th CBSE Physics CBQ'S (Case Base Study) Motion -Physics

Last Answer : Any change in the velocity of an object results in an acceleration: increasing speed (what people usually mean when they say acceleration), decreasing speed, or changing direction. Yes, that's right, a change in the direction of ... -------------------------- More questions to be added shortly...

Class 9th CBSE Physics CBQ'S (Case Base Study) Gravitation -Physics

Description : Class 9th CBSE Physics CBQ'S (Case Base Study) Gravitation -Physics

Last Answer : The universe has a lot of forces, a lot of pushes and pulls. We're always pushing or pulling something, even if only the ground. But it turns out that in physics, there are really only four fundamental forces from which ... ----------------------------- More questions to be added shortly...

How to determine Axial Force Coefficient in Ansys Fluent ? -Physics

Description : How to determine Axial Force Coefficient in Ansys Fluent ? -Physics

Last Answer : I want to determine the aerodynamic coefficients of a 2D model (solid boosters). To be clear with the model, It is a 2D axisymmetric model, with blunt nose and flared aft body. There is a ... jet pressure ratio. Am I missing something or is there any other method to find axial force coefficient.

Why is the centrifugal force talked about so much? -Physics

Description : Why is the centrifugal force talked about so much? -Physics

Last Answer : The centrifugal force is very real if you are in a rotating reference frame. It causes objects in a rotating frame of reference to accelerate away from the center of rotation. Washing machines, uranium enrichment ... helps :) Stay Safe, Stay Curious, Keep Learning, Keep Growing..... Thankyou!!!

Give two eg of contact force ? -Physics

Description : Give two eg of contact force ? -Physics

Last Answer : The eg of contact forces are: Frictional force and Muscular Force .

Separate the following in groups of scalar and vectors: velocity, speed, displacement, work done, force, power, energy,

Description : Separate the following in groups of scalar and vectors: velocity, speed, displacement, work done, force, power, energy,

Last Answer : Separate the following in groups of scalar and vectors: velocity, speed, displacement, work ... , acceleration, electric charge, angular velocity.

From the formula F = qE, can prove that work done is a product of force and displacement. State True/False a) True b) False

Description : From the formula F = qE, can prove that work done is a product of force and displacement. State True/False a) True b) False

Last Answer : a) True

The Product of the displacement of the body and the component if the force in the direction of the displacement.  a. Nonflow Work  b. Flow Work  c. Work  d. None of the above

Description : The Product of the displacement of the body and the component if the force in the direction of the displacement.  a. Nonflow Work  b. Flow Work  c. Work  d. None of the above

Last Answer : Work

The true power indicated by a wattmeter depends on the current flow through the load, the magnitude of the potential across the load, and the _____________. A. power factor of the load B. angle of coil displacement C. inertia of the movable coil D. high resistance from the load

Description : The true power indicated by a wattmeter depends on the current flow through the load, the magnitude of the potential across the load, and the _____________. A. power factor of the load B. angle of coil displacement C. inertia of the movable coil D. high resistance from the load

Last Answer : Answer: A

The true power indicated by the pointer movement of a wattmeter depends on the current flow through the load, the magnitude of the potential across the load, and the ____________. A. power factor of the load B. angle of coil displacement C. inertia of the movable coil D. high resistance from the load

Description : The true power indicated by the pointer movement of a wattmeter depends on the current flow through the load, the magnitude of the potential across the load, and the ____________. A. power factor of the ... B. angle of coil displacement C. inertia of the movable coil D. high resistance from the load

Last Answer : Answer: A

The ratio of real depth to apparent depth is called : A. Refractive index B. Critical angle C. Lateral displacement D. None

Description : The ratio of real depth to apparent depth is called : A. Refractive index B. Critical angle C. Lateral displacement D. None

Last Answer : A. Refractive index

Why horizontal displacement is specified in data-sheet? What will you do if the angle due to displacement is more than 4 degree?

Description : Why horizontal displacement is specified in data-sheet? What will you do if the angle due to displacement is more than 4 degree?

Last Answer : Answer: For bottom mounted springs it is mentioned to avoid large spring bending by frictional force and displacement. So that additional measures can be taken to lower frictional force by providing PTFE/ ... hanger in a offset position so that after movement the angle becomes less than 4 degree.

The work done by a friction force is: w) always positive x) always negative y) always zero z) either positive or negative depending upon the situation.

Description : The work done by a friction force is: w) always positive x) always negative y) always zero z) either positive or negative depending upon the situation. 

Last Answer : ANSWER: X -- ALWAYS NEGATIVE

In case of simple harmonic motion, displacement is proportional to the (A) Velocity (B) Acceleration (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : In case of simple harmonic motion, displacement is proportional to the (A) Velocity (B) Acceleration (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : B) Acceleration

How much displacement can be generally allowed in sustain case

Description : How much displacement can be generally allowed in sustain case

Last Answer : 5mm

In case of semi-conductors, the ratio of conduction current to displacement current is:

Description :  In case of semi-conductors, the ratio of conduction current to displacement current is: A) more than 200 and less than 1000 B) less than 100 but greater than 1/100 C) less than 1/100 D) more than 1000

Last Answer : In case of semi-conductors, the ratio of conduction current to displacement current is:  less than 100 but greater than 1/100

Impulse can be obtained from a.force-time diagram b.velocity-time diagram c.107 dynes d.force displacement diagram e.velocity-displacement diagram

Description : Impulse can be obtained from a.force-time diagram b.velocity-time diagram c.107 dynes d.force displacement diagram e.velocity-displacement diagram

Last Answer : a. force-time diagram

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

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

A force F = 4i + 6j + 3k acting on a particle produces a displacement of S = 2i + 3j + 5k where F is expressed in newton and s in metre.

Description : A force F = 4i + 6j + 3k acting on a particle produces a displacement of S = 2i + 3j + 5k where F is expressed in newton and s in metre.

Last Answer : A force F = 4i + 6j + 3k acting on a particle produces a displacement of S = 2i + 3j + 5k where ... and s in metre. Find the work done by the force.

What does a slope of force vs displacement graph represent?

Description : What does a slope of force vs displacement graph represent?

Last Answer : A curve of a force F, vs displacement x (F vs x), represents the magnitude of a force as it is producing a displacement of a body. The area under the curve froma point x1, to point x2, represents ... the slope is zero, (dF/dx=0),meaning that the force is not varying as the displacement takes place.

Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _______ A Static force B Dynamic force C Torsion D Compression

Description : Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _______ A Static force B Dynamic force C Torsion D Compression

Last Answer : A Static force

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as A Damping factor B Damping coefficient C Logarithmic decrement D Magnification factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as A Damping factor B Damping coefficient C Logarithmic decrement D Magnification factor

Last Answer : D Magnification factor

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as A Logarithmic decrement B Magnification factor C Damping factor D None of the mentioned

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as A Logarithmic decrement B Magnification factor C Damping factor D None of the mentioned

Last Answer : B Magnification factor

A weight of 50 N is suspended from a spring of stiffness 4000N/m and subjected to a harmonic force of magnitude 60N and frequency 60 Hz. what will be the static displacement of the spring due to maximum applied force A. 0.015m B. 0.15 m C. 15 m D. 150m

Description : A weight of 50 N is suspended from a spring of stiffness 4000N/m and subjected to a harmonic force of magnitude 60N and frequency 60 Hz. what will be the static displacement of the spring due to maximum applied force A. 0.015m B. 0.15 m C. 15 m D. 150m

Last Answer : B. 0.15 m

Which of the following relations is true for viscous damping? A) Force α relative displacement B) Force α relative velocity C) Force α (1 / relative velocity) D) None of the above

Description : Which of the following relations is true for viscous damping? A) Force α relative displacement B) Force α relative velocity C) Force α (1 / relative velocity) D) None of the above

Last Answer : B) Force α relative velocity

Transmissibility in a support excitation system is defined by A) Ratio of absolute amplitude of the mass to the excitation amplitude of the support B) Reciprocal of (a) C) Ratio of the force transmitted to the foundation, to the equivalent force corresponding to maximum displacement excitation D) None of the above

Description : Transmissibility in a support excitation system is defined by A) Ratio of absolute amplitude of the mass to the excitation amplitude of the support B) Reciprocal of (a) C) Ratio of the ... the foundation, to the equivalent force corresponding to maximum displacement excitation D) None of the above

Last Answer : B) Reciprocal of (a)

The ratio of maximum displacement of the forced vibration to the deflection due to the static force, is known as A. Damping FactorB. Damping Coefficient C. Logarithmic Decrement D. Magnification Factor

Description : The ratio of maximum displacement of the forced vibration to the deflection due to the static force, is known as A. Damping FactorB. Damping Coefficient C. Logarithmic Decrement D. Magnification Factor

Last Answer : D. Magnification Factor

Transmissibility is the ratio of a. force transmitted and exciting force b. force applied and the resulting displacement c. input displacement and output displacement

Description : Transmissibility is the ratio of a. force transmitted and exciting force b. force applied and the resulting displacement c. input displacement and output displacement

Last Answer : a. force transmitted and exciting force

Which of the following relations is true for viscous damping? a. Force α relative displacement b. Force α relative velocity c. Force α (1 / relative velocity) d. None of the above

Description : Which of the following relations is true for viscous damping? a. Force α relative displacement b. Force α relative velocity c. Force α (1 / relative velocity) d. None of the above

Last Answer : b. Force α relative velocity

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as a) Damping factor b) Damping coefficient c) Logarithmic decrement d) Magnification factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as a) Damping factor b) Damping coefficient c) Logarithmic decrement d) Magnification factor

Last Answer : d) Magnification factor

Maximum displacement due to forced vibration is ____________ the displacement due to static force. (A) inversely proportional to (B) directly proportional to (C) independent of (D) none of the above

Description : Maximum displacement due to forced vibration is ____________ the displacement due to static force. (A) inversely proportional to (B) directly proportional to (C) independent of (D) none of the above

Last Answer : (B) directly proportional to

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as (A) damping factor (B) damping coefficient (C) logarithmic decrement (D) magnification factor

Description : The ratio of the maximum displacement of the forced vibration to the deflection due to the static force is known as (A) damping factor (B) damping coefficient (C) logarithmic decrement (D) magnification factor

Last Answer : (D) magnification factor

Maximum displacement due to forced vibration is dependent on deflection due to static force. a) True b) False

Description : Maximum displacement due to forced vibration is dependent on deflection due to static force. a) True b) False

Last Answer : a) True

Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _______ a) Static force b) Dynamic force c) Torsion d) Compression

Description : Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _______ a) Static force b) Dynamic force c) Torsion d) Compression

Last Answer : a) Static force