A sledder has 600 J of potential energy and 200 J of kinetic energy at one point on a steep hill. a. How much kinetic energy will the sledder have at the bottom of the hill? [Select] (Assume negligible air resistance and friction.) b. As the sledder goes down the hill and picks up speed, their potential energy will [Select] and their kinetic energy will [Select]

Q: B OA. decreasing in AB, BC and CD OC. constant in AB, BC and CD OB. constant in AB and BC,…

A: In the given question, A to C is a frictionless ramp, C to D is a rough surface where friction force…

Q: A body does 30 Joules of work in 6 seconds . What is it's power ?

A: Given data :   Work done   =   W    Time taken   =   T        To find :            Power

Q: 6. A 0.150 kg baseball is moving 20.0 m/s. A bat hits it, doing 15.0 J of Work on it. What is the…

A: work energy theorem Wnet=change in kinetic energyWnet=∆KEWnet=KEfinal-KEinitialWnet=…

Q: What is the efficiency of a machine that produces 23 J of work from an input of 55 J? A. 32 %…

A: Given data:  Work done (Wout) = 23 J Input energy (Ein) = 55 J Required: Efficiency of the machine

Q: B C ЗРо Po = 1.0 atm Vo = 100 L

A: Work done in a thermodynamic process W = P (V2 - V1 )

Q: 7. A container factory use a 370 W motor to operate a conveyor belt that lifts containers from one…

A: Given Mass lifted m = 250 kg Displacement h = 3.6 m Time taken t= 45 s Power P = 370 W

Q: You eat a sandwich. Later that day, you walk up a flight of stairs. a. Describe how energy changes…

A: a. The sandwich contains energy in the form of chemical energy.  When I ate the sandwich, this…

Q: An object with mass of 1000 kg rests on a ledge 200 m above sea level. Calculate the specific…

A: Gravitational potential energy is the energy possessed by an object due to its position in a…

Q: at point A the skater has 3400 J of PE. At point D the skater has 1600 J of PE. how much KE does a…

A:

Q: When the force is opposite the displacement of the object where it is acting, the force is doing  A.…

A: Solution-: Since force is opposite the displacement of object then angle between force and…

Q: 16. A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal. He wants…

A:

Q: QUESTION 6 How much energy does it take to lift a 100 kg box from the floor to a 1.5 m high shelf?…

A: Given: m=100 kgh=1.5 m

Q: the KE of a 1 000 kg . Calculate car travelling at 60 km/h.

A: Given data:  Mass (m) = 1000 kg Velocity (v) = 60 km/h Required: Kinetic Energy (KE)

Q: 1. At the end of a 15-min session on a stationary bike at the gym, the bike's display indicates that…

A:

Q: Q4. what is not true about energy? O Energy can be stored. O Energy can move from one object to…

A: According to Energy Conservation:   Energy cannot created and cannot be destroyed, it can only…

Q: n engine releases 1675 J of energy per cycle and performs 200J of work. What is the value of power i

A: Given Work done by the engine is W=200 J Time taken is t=0.89 s

Q: 27.) W out is always smaller than W in because when a machine is used, not all of the energy it…

A: 27. When a machine is used, due to the friction some of the input energy convert in to thermal…

Q: 9. What unit is equivalent to a J/s?

A: Dear student,  Since all questions are different as per guidelines we can author only first one.…

Q: 12. Find the maximum height reached by a ball thrown upward at a velocity of 95 ft/s.  do not use V…

A:

Q: 15. A box is moved from the floor up to a tabletop but gains no speed in the process. Is there work…

A: Box is moved from the floor up to a tabletop

Q: A spring-loaded toy gun is used to shoot a ball straight up in the air. (Eigure 1)The ball reaches a…

A: Note : As per guidelines, I can only answer a single question for you, I hope this is of great…

Q: . At the first stage of a roller coaster ride, the 1200kg roller coaster ends up 50 m above its…

A: Mass of the roller coaster(m)=1200kg Height(h)=50m

Q: 4. In a tug-of-war match, your team is slowly pulling the rope (and the other team) to your side. a.…

A: a. As your team applies a force and there is displacement ( as the other team moves toward your…

Q: 20. How many kcal does a 155 pound man expend when he rides a Monarch bicycle ergometer at 150 Watts…

A: Given value--- power =150 Watt. time = 20 min. We have to find--- expend energy?

Q: Determine the wind energy per unit mass if the winds speed is 21 Km/Hr. A- 17.014 J B- 0.810 J C-…

A:

Q: b. How much energy was dissipated due to friction in the process?

A: Given, Mass, m=24kgHeight, h=5.0mvelocity,v =2.8m/sacceleration due to gravity,g=9.8m/s2…

Q: According to the Law of Conservation of Energy, energy can never be destroyed, but merely…

A: Mass of object = 1 kg  Distance to which object is lifted upwards = 5 m  Force applied in upward…

Q: A 5-kg block slides () along a rough () horizontal surface. The coefficient of kinetic friction for…

A: Given : m = 5 kg μk = 0.40 v = 3.5 m/s

Q: 1. Describe the energy transformations that occur when you climb to the top of a stairway.

A: To discuss the energy transformations that occur when climb to the top of a stairway.

Q: 10.) What is one effect of friction? a. Mechanical energy is transformed into thermal energy. b.…

A: Effect of friction

Q: Assuming that there are no heat effects and no frictional effects, find the kinetic energy of a…

A: Since there is no external force is acting on the body therefore we can apply energy conservation.…

Q: An American client calls you from Europe for your help in converting the pet food she can purchase…

A: We are given a bag containing pet food. We are given energy density of bag. This energy density is…

Q: 8). For exercise, an 80 kg athlete climbs 20-m high stairs in 25 s. Assume the efficiency of the…

A: So in this question we are asked to calculate the metabolic energy of the athlete,  the change in…

Q: Pressure B C ЗР Po = 1.0 atm Vo = 100 L Po D Volume Vo 3Vo

A: The process AB is a constant volume process.

Q: potential energy

A: Given, Height H=100 m Rate of water flow is  v=1000 m3/min. Note: Density of water ρ=1000 kg/m3 1…

Q: An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is…

A: Given that:   Mass (m) = 83 kgEnergy (E) = 1.00 × 103  kcal  Initial velocity (v0) = 0 m/s  Here we…

Q: 50. Rubbing your hands together requires 450 J of energy and results in a thermal energy increase in…

A: As per universal law of energy, energy neither be created nor be destroyed, it only changes form.

Q: How much work was done

A: we know work done W = power * time  W = P * t

Q: How much work is needed to lift a bag of groceries that weighs 250N to a height of 4m?   A. 1000…

A: Given : w = 250 N h = 4 m

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.