What is the unit of work?
Q: An 80 kg object is dropped from rest from a height of 25 meters above the ground. Use the concept…
A:
Q: 5. Fill in the missing potential and kinetic energies in the diagram. Assume that the incline is…
A:
Q: 84. When is work done on an object? a. when a net force acts on an object b. when the object moves…
A: The work done on an object is W=Fnetd≠0 if Fnet≠0
Q: If Nellie newton pushes an object with twice a force for twice the distance, she does A.) 8 times…
A: Work done = Force x Displacement W=F.d
Q: 85. What is work – energy theorem? a. It states that whenever work is done, energy changes. b. It…
A: The amount of work done by all the forces on a particle is equal to the change in kinetic energy.
Q: 37. The work-energy theorem states that the change in the kinetic energy of an object is equal to…
A: Let the mass of an object = m Let the initial velocity of an object = u Let the final velocity of…
Q: A. 1. What happens when a force exerted on an o Potential energy is created. Kinetic energy is…
A: Introduction: Newton's first law of motion states that an object stays in its state of rest or…
Q: Work is energy transfer. When work is positive A. energy is transferred to the surrounding. B.…
A: When work is positive then energy is transferred from surrounding to the system as per first law of…
Q: A ball is thrown straight up from the ground. The work done on it by the force of gravity is
A: Suppose a body of mass "m" & it is thrown vertically upward.
Q: The following lab set-up consists of two carts on a frictionless surface. Each end of the spring is…
A: Given:- The mass of cart A is m and the other mass of cart B is 3m and both the cart are connected…
Q: 15. A car is traveling to the right at 20 m/s, which gives it a kinetic energy, K. A second…
A:
Q: 6. Four students took turns applying a force to an object in a physics lab. The graph below shows…
A:
Q: A boy reaches out of a window and tosses a ball straight up with a speed of 10 m/s. The ball is 20 m…
A: Given: A ball straight up with a speed of 10 m/s The ball is 20 m above the…
Q: Match associated items - A. B. C. D. E.…
A: Terms given in left column : Power Physics unit of energy Physics unit of power Potential energy…
Q: 11. Students are designing an experiment to identify the transformations between potential and…
A: Kinetic energy is given by, EK=12mv2 Potential energy is given by, EP=mgh
Q: 94. Which of the following is a unit of energy?* O a. W O b. kg m/s O c.J O d. m/s
A: Energy : Energy is defined as the capacity of doing work.
Q: A 1400-N crate rests on the floor. a.) How much work is required to move it at constant speed 5.0 m…
A: Given Weight of the crate is Fg=1400 N Displacement of the crate is d=5.0 m Frictional force is…
Q: A child lifts a 5 kg box up from the floor. The child then carries the box with constant speed of 1…
A: Given : m = 5 kg v = 1 m/s
Q: ents took turns applying a force to an object in a physics lab. The graph below shows the force…
A: Four students took turns applying a force to an object in a physics lab. The graph below shows the…
Q: In what form should be the vehicle's energy be when it is at this point? a.half potential energy…
A:
Q: 1. A force acting upon an object to cause a displacement is known as energy b. potential ckinetic d.…
A: A force acting upon an object to cause a displacement is known as work. Hence, correct option is…
Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…
A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…
Q: Gillian places a ball on a table at a height of 3.2 m. Afterward, she places it on a table at a…
A: Given data: The initial height of the ball, hi=3.2 m. The final height of the ball, hf=1.5 m.…
Q: 64. Which of the following statements is/are true about the value of work done? a. The work done…
A:
Q: A force is given as Fx(x) = –kx4, where the constant k = 22 N/m4. Determine the work done to change…
A: Expression for work done - W=Fdx Where, F = Force dx = Displacement
Q: 5. If the sign for work is negative, * O a. Kinetic energy is increasing. O b. Kinetic energy is…
A: work energy theorem. Work done is equal to change in Kinetic energy. W = K.E 2- K.E 1 K.E. 2 -…
Q: Which of the following statements is/are true about the value of work done? a. The work done by a…
A: The work done due to a force is given by W = Fd.cos(θ) Here F = Force d = displacement θ = angle…
Q: A block is moving with 52.0 J of KE. A 12.0 N force pulls the block straight back, against the…
A: Given data: Initial Kinetic Energy (KEi) = 52.0 J Force (F) = 12.0 N, straight backward Displacement…
Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…
A: A ball is thrown straight up with some initial velocity. Air resistance is neglected.
Q: Two cars have the same mass, but one is moving three times as fast as the other is. How much more…
A:
Q: 5. What is kinetic energy? Select one: a. stored energy b. energy of friction c. energy of motion d.…
A: Kinetic energy: It is the energy possessed by the object due to its motion. When the object having…
Q: 1. Energy 2. Joules A 3. Work C 4. Power E A. The units for work and energy. B. Stored or gained…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: Which of these is an example of no work being done? a. a child pushes a toy car across a flat…
A: Work done is the energy transferred when a force is displaced by a distance.
Q: An object with mass m and a velocity v. What happens to Kinetic Energy when velocity is doubled? a.…
A:
Q: a watt is a. 1 joule per second b. Equal to 1 (kg)(m^2)/s^2 c. The unit for all types of…
A: The watt is the unit of Power or radiant flux. One watt of power is defined as the…
Q: Which one of the following is equivalent to a watt? O a. N.m2 O b. N.m O C. J.s O d. N.m.s1
A: Watt is unit of power. Power= Energytime Unit Nms-1
Q: 57. Which of the following describes the mechanical energy of a cart at rest at the top of a steep…
A: Mechanical energy is the sum of kinetic energy and potential energyH = T +Uwhere H denotes the…
Q: Suppose you want to calculate how much work it takes to lift a 160 N barbell. Besides the mass of…
A: Given:-work require to lift the barbell of 160 N .
Q: 7. A body of mass 40 Kg covers a distance of 50 m in 5s starting from rest under the influence of a…
A: Given data, Mass of the body m = 40 kg Distance s= 50 m Time t = 5 sec Starting from rest u = 0 m/s…
Q: 5. A 2-kg object moved from rest to a speed of 10 m/s. a) Calculate the work done on the object? b)…
A:
Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…
A: Given data The mass is m=50 kg The height of the lift is h=6 m The accleration due to gravity is…
Q: Choose all that apply to potential energy. A. Potential energy can be negative. B. Potential…
A:
Q: You push a shopping cart a certain distance with a certain force. If you apply that same force, but…
A: According to question we need to find--- work done ?
Q: d in terms of magnitudes, so it is never negative.
A:
C7 6.) What is the unit of work?
Given:
The unit for the measurement of the work.
Concept:
The movement or the displacement of an object by the cause of the external force acting on it is called work.
Step by step
Solved in 3 steps
