A 600 N hiker carries a 2.0 kg knapsack up a trail. After 30 minutes, the hiker is 300 m higher than his starting point. A. How much total work did the hiker do? B. Calculate the power expended by the hiker during the 30 min climb.

Q: III When you ride a bicycle at constant speed, nearly all the energy you expend goes into the work…

A: Given data, Area A=0.45 m2 Velocity v=7.3 m/s Drag coefficient Cd=0.9 Time t=1 hr=60×60=3600 s

Q: 16. A diesel-powered crane (mc = 2.93 x 10° kg) is lifting a heavy block of concrete mb = 8.44 x 104…

A:

Q: box slides down a surface that is inclined at 53° below the horizontal. The coefficient of kinetic…

A: Givenm=8 kgθ=53°μk=0.4

Q: 1. A 0.14 k-g pine cone falls 16m to the ground, where it lands at a speed of 13 m/s. (a) With what…

A:

Q: You (60kg) and a friend (75 kg) are each in a sled sitting at the top of a snowy hill. You waxed…

A: Given :      Mass of me ,m1 = 60 kg      Mass of a friend, m2 = 75 kg      Height of the hill, h = 8…

Q: A 0.6 kg box moves up a ramp with some initial speed. It reaches a vertical height of 3.5 m before…

A: Solution: Given: m = mass of box = 0.6 kg g = gravitational acceleration = 10 m/s2 h = height of…

Q: A box is pushed across the floor for a distance of 5 meters with an inclined force of 50 Newtons,…

A: Given: The applied force is 50 N. The angle of the force is 20o with the horizontal. The…

Q: 1. Work and Energy Type Question: A rollercoaster comprises a complex path of varying slopes using a…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Bob can throw a 334 g rock with a speed of 28.49 m/s. He moves his hand forward 0.91 m while doing…

A:

Q: 2. A rollerskate is dragged across the ground for 3.4 meters, by someone pulling on its shoelace.…

A:

Q: A man returning from ice fishing trip pulls a sled with fish. Total mass of the sled and fish is…

A:

Q: A0.16 kg pinecone falls 18 m to the ground, where it lands with a speed of 11 m/s. Part A How much…

A: (A) The work done on pinecone by air resistance is the difference in kinetic energies between…

Q: A 45 kg skier starts from rest and skies down a hill that is angled at 17 degrees from horizontal.…

A: Work done is given as the dot product of force vector and displacement vector . Also according to…

Q: You push your physics book 2.40 m along a horizontal tabletop with a horizontal push of 3.00 N while…

A: Given data: Displacement (d) = 2.40 m, horizontal Horizontal puch force (F) = 3.00 N Force of…

Q: 7. a. You push a couch across the floor, pushing with a force of 282.5 N horizontally. It slides…

A:

Q: 1) A freight plane has a total mass of 4.00 x 105 kg (including cargo). It starts from rest at sea…

A: Given, Mass of freight plane (M) = 4×105kg  Initial speed (u)= 0 m/s  Initial height(hi) = 0 m (…

Q: A car runs out of gas at the bottom of a hill. It rolls 70 m before coming to a complete stop. If…

A: Given: The mass of the car is 800 kg. The angle of inclination is 10°. The coefficient of friction…

Q: You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it…

A: Given, The kinetic energy of the object, K The maximum height achieved by the object, h

Q: A 340 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 2.2 N/cm…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: . What is the gravitational potential energy of the book relative to the ground?

A:

Q: A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 2.00 m above the…

A: mass=m=0.7 kg initial height= h=2 m final height=h'=3.1 m initial speed=v=7.8 m/s final speed=v'=3.4…

Q: In the attached image, the mass is 3.20 kg, and theta=37 degrees. The surface does have friction,…

A: Given:Mass of the box = 3.2 kgTheta = 37 degreesStatic coefficient=0.45Kinetic…

Q: A 2-kg brick is thrown downward from a height ?1 = 15 m to ?2 = 10 m. The initial kinetic energy of…

A:

Q: Calculate the work done by the force of gravity when a 7.0 kg object is lifted to a height of 46.0 m…

A:

Q: 1.A 675-N Marine in basic training climbs a 10.5-m vertical rope at a constant speed in 9.25 s. What…

A:

Q: A grocery cart with a mass of 10 kg is being pushed at constant speed up a 25° ramp by a force Fp…

A:

Q: The (non-conservative) force propelling a 1.90 x 10³-kg car up a mountain road does 8.00 x 106 J of…

A: We are given the work done by propelling force. By work energy theorem, the total work done by non…

Q: Calculate the potential energy of a 75 Kg boulder sitting at the edge of a cliff that is 210 meters…

A: Mass of boulder m= 75kg Height of clif = 210m Value of g= 9.8m/s2

Q: Wile E. Coyote waits for the roadrunner on a cliff 7.03 m above the valley to drop a 3250 g boulder.…

A: Given: cliff height h= 7.03 m  Mass m = 3250 g = 3.25 kg And g = 9.8 m/s2

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.