A hiker of mass 63 kg is going to climb to the top of mount tam, which has an elevation of 2,574 ft. a. If the hiker starts at an elevation of 375 ft, what will their change in gravitational potential energy be, in joules, once they reach the top? Assume zero of gravitational potential energy is at sea level. b. Repeat the above calculation for the change in gravitational potential energy, but assume the gravitational potential is zero at the top of the mountain.

Q: A 34.0 cm long pendulum with a 245-g bob swings through at an angle of 180 degrees. Choose the…

A: L =34 cm  mass, m = 245 g = 0.245 kg

Q: Ashley's favorite painting was hanging on her living room wall. During a small earthquake, her house…

A: Say the painting mentioned in the question has a mass 'm' and was hanging on the wall at a height…

Q: A youngster rides on a skateboard with a speed of 2m/s. After a force acts on the youngster, her…

A:

Q: elevator cable breaks when a 925 kg elevator is 22.5 m above the top of a huge spring (k = 8.00×104…

A:

Q: Hello, I got stuck mainly with the question. I was told before that I am only able to submit 3 sub…

A:

Q: a) Calculate the work done in lifting a 500 N barbell 2.2 m above the floor. b). What is the…

A: Given Weight of the barbell is F=500 N Height above the ground is h=2.2 m Time taken to lift the…

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: A roller coaster car tops the highest point of the ride at 2 metres per second. The highest point of…

A:

Q: A 750 kg roller coaster car is pulled to the top of a hill 45 m high and arrives at the top with…

A: Given, The mass of the roller coaster car, m = 750 kgHeight of the hill, h = 45 m(a) Workdone by the…

Q: 10. A person jumped into the ocean from a car which was 320 m above the water's surface. He had a…

A: Given: mass of person, m = 94 kg  Initial height of person, h1 = 320 m final height, h2 = 75 m

Q: 30 kg box is placed on a 1.9 m tall shelf. a). What is the gravitational potential energy of the…

A: mass = m = 30kg height = h = 1.9 m

Q: A 0.60 kg rubber ball is thrown into the air. At a height of 30 m above the ground, it is travelling…

A: Given: Mass,m=0.60kgAcceleration due to gravity,g=9.8m/s2Height,h=30mVelocity,v=18m/s An object's…

Q: A 25 kg box is pushed up a ramp that makes a 15 degree angle with the horizontal.  The ramp is 15…

A: (a)Work done by ramp is zero when friction is negligible.      (b)Work done by gravity is:-…

Q: Problem #2: a. How high a hill can a car coast up (engines disengaged) if work done by friction is…

A:

Q: The force, F, required to compress a spring by a distance a meters is given by F = 7x newtons. Which…

A: The work done can be given by W=∫abFxdx

Q: 50 - meter rope with a mass of 30 kg is dangling over the edge of a cliff. Ignoring friction, how…

A: Mass (m) = 30 kgLength of rope (L) = 50 m

Q: A curious little girl held a 0.23-kg stone 1.2 m above the top edge of a water well and then dropped…

A:

Q: A baseball with a mass of 0.150kg is tossed upward with a speed of 42.0m/s. Taking the launch point…

A: When the ball is at its maximum height than its velocity in vertical direction is zero. Apply the…

Q: A. Suppose you lift a 15 kg box by a height of 1.0 m. How much work do you do in lifting the box?…

A: (a) The work done in lifting the box is

Q: A shooting star is a meteoroid that burns up when it reaches Earth’s atmosphere. Many of these…

A: Kinetic Energy = 0.5 m v2

Q: Answer the following questions: a. If you push a lawn mower across a yard in 10 seconds, how does…

A: a. If you push a lawn mower across a yard in 10 seconds, how does the work done compare with pushing…

Q: A 70-kg hiker hikes from an elevation of 1,209 m to an elevation 2,199 m. i. What is the hiker’s…

A: i) As the hiker moves from a lower elevation to a higher one the gravitational potential energy of…

Q: In the movie Monty Python and the Holy Grail a cow is catapulted from the top of a castle wall over…

A:

Q: A man pushes a cart 25m at a constant speed on ground level, against a 36N frictional force. He…

A: Given distance=25m           frictional force=36N           θ=28.50      Work done by the friction…

Q: The force, F, required to compress a spring by a distance x meters is given by F = 3x newtons. ||…

A:

Q: A box is pulled 2.0 meters along a rough surface at constant velocity using 100 N of force inclined…

A:

Q: A 900 kg elevator is raised by an electric motor up from the basement to the third floor, a vertical…

A:

Q: A 55 kg box is raised a distance of 2.0 m above a storeroom floor. What is the change of potential…

A:

Q: On a frictionless horizontal surface, a 6.84 kg block is pushed up against a 55,404 N/m spring. The…

A: rite the given values with the suitable variables. m=6.84 kgk=55404 N/mu=25.2 m/s Here, m, k, and u…

Q: The figure below shows a person lifting a box with a mass of 29.8 kg to a height of 1.8 m. Determine…

A: The potential energy U of an object of mass m at a height h above the reference level, is given by,…

Q: A 2kg package is moves up along a 10 m ramp AC inclined at 15' with an initial speed of 5 m/s.…

A: Given, m=2kgL=10mθ=150v0=5m/sμ=0.2