initially. What is the speed after the tractor moves through a 20.0 m displacement?

Q: 2. A 2.70 kg block starts from rest and slides a distance d down a frictionless 32.1° inclined…

A: Mass of the block m=2.7 kg and angle of incline is 32.1o. The block starts from rest (u=0) and comes…

Q: Can you expend energy without doing any work? Given an example.

A:

Q: A spring with a spring constant of 1.0 N/cm is attached to a 4.0 kg mass. If you were to pull and…

A: Given:- The spring constant of the spring is k = 1.0 N/cm = 100 N/m The mass attached to the spring…

Q: 1. A huge box having a mass of 6.80 kg is pulled down along a frictionless surface inclined at 42.0°…

A: Box is being pulled down the incline so the kinetic friction will be up to the inclined surface and…

Q: Compare the kinetic energy of a 50-kg athlete running at a speed of 3.0 m/sec with that of a 25-kg…

A: FORMULA:

Q: What is the difference between kinetic and potential energy?

A: Here given the name of two energy . Kinetic and potential energy. We have to define the difference…

Q: Wile E is back again! And again he's falling, this time from a 30m cliff. Wile E mass is 63kg. a.…

A: Given data: Height of the cliff (h) = 30 m HA = (1/3)h = 10 m Need to determine the speed at point…

Q: Discuss why work & energy have the same unit.

A: Work and Energy have the same unit because they are intimately related by the Work-Energy Theorem.…

Q: How do I calculate energy used in my compression spring ping pong ball launcher? Please show an…

A: Energy used in the compression of spring ping ball launcher stored in form of the potential energy…

Q: How to solve this problem using the energy method? Like with potential energy and kinetic energy?

A: The expression of the speed from conservation of energy,

Q: In 1953 two climbers, Hillary & Norgay, made the first successful ascent of Mt. Éverest. How many…

A: Height of Mt. Everest, h = 8,848.86 m Gravitational energy of climber at top, U = mgh =…

Q: What is the ultimate source of energy for fossil fuels, dams, and windmills?

A:

Q: Discuss the origin of the unit horsepower.

A: Horsepower unit was first time used by James Watt in 1782. The  story refers that James Watt uses…

Q: 1) Calculate the total mass (kg) of a person climbing a hill 200 meters high if the work done is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 5. Circle the one with more Kinetic energy for each case and briefly explain why. a) A 25 kg mass or…

A:

Q: Which would have more kinetic energy: a slow moving truck or a fast moving car. Explain your answer

A: We know kinetic energy KE = (0.5) * m * v2. where m is mass of the body  V is the speed of the body

Q: Give 5 situations in which work is not done on it.

A:

Q: The work done by an external force to move a charge from point A to point B is 15x10^4J. If the…

A: Given data: Work done by external force is, W=15×104 J. Kinetic energy at B is, KB=4.82×10…

Q: 4. In a water slide whose total length is 5.5 m as shown in Figure 3.12, a 30 kg child slides from…

A: Answer:-  Given  Total length (l) = 5.5 m  Mass of a child (m) = 30 kg  Force(F) = 45.0 N  Height…

Q: . Is it possible to do work on an object that remains at rest?

A: Work

Q: What do you think is the difference between the everyday usage and the Physics usage of the phrase…

A: Conservation of energy : it's states that not the energy will create nor the destroyed. Only it's…

Q: What is the kinetic energy of photoelectron (in terms of keV) ejected from K-shell of a lead (EB-82x…

A: Kinetic energy(K) of photoelectron. Given, Energy of K-shell of leadEB=82 keV=82×103 eVEnergy of…

Q: I do not need the solution to the question. Just let me know why in this question conservation of…

A: Conservation of energy is only applicable for elastic collision.

Q: 3. Two blocks of masses ma = 2.90 kg and ms = 6.30 kg are connected by a light string that passes…

A:

Q: How can we ignore the self-potential energy when doing a work-energy problem or an…

A:

Q: A dropped ball bounces to one-half its original height. Discuss the energy transformations that take…

A: A dropped ball

Q: Do #9 from the Energy WS 4 which is posted on Canvas. Make sure you define your system, draw your…

A: Given:Initial velocity of the roller coaster = 0 m/sInitial height above the ground = 5 mFinal…

Q: A block of mass m is attached to the end of a spring (spring stiffness constant k), (see the figure…

A:

Q: Describe the energy transformations that take place when askier starts skiing down a hill, but after…

A: When the skier begins from elevated position, it posses large quantity of potential energy. If he…

Q: Find the linear acceleration of the spool below (mass m, moment of inertia I) if it is rolling…

A: as per the given figure here, ∑F=maT-fs=ma

Q: The .88 kg cart is given a forward push to accelerate it from rest to a velocity of 1.1 m/s as…

A:

Q: Why does one get tired when pushing against a stationary wall when no work is done on the wall?

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

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.