A new record for runningthe stairs of the Empire State Building was set on February 4, 2003.The 86 flights, with a total of 1576 steps, was run in 9 minutes and33 seconds. If the height gain of each step was 0.20 m, and themass of the runner was 70.0 kg, what was his average power outputduring the climb? Give your answer in both watts and horsepower

Q: A 1000 Kg truck has a power output of 40. 0 kilo watts. Find the time (seconds) needed to accelerate…

A: Mass of truck, M=1000kg Mass of load, m=100kg Initial speed of truck, u=40m/s Final speed of truck,…

Q: Calculate the Work = F x d done by gravity that pushes the car down the ramp. Which d (distance) do…

A: Analyze the following figure. The ramp’s angle (θ) can be determined as, Here, h and l represent…

Q: What would be the power output (in-hp) of a 1750kg car if it can acend to the top of a 285m high…

A: The expression of work- energy theorem,

Q: A superman cyclist rode a bike uphill at 20 miles/hour for two hours. To sustain this constant speed…

A:

Q: 3. A record was set for stair climbing when a man ran up the 2400 steps of the Empire State Building…

A: Given:-  A record was set for stair climbing when a man ran up the n = 2400 steps. The time taken to…

Q: Suppose that 3 J of work is needed to stretch a spring from its natural length of 24 cm to a length…

A:

Q: Calculate the Work = F x d done by gravity that pushes the car down the ramp. Which d (distance) do…

A: Analyze the following figure. The component of the gravitational force that is pushing the car down…

Q: A boy pulls a sled with a force of 10 lb for 100 ft. The rope attached to the sled is at an angle of…

A: Given: force applied by boy, F = 10 lb = 10(4.44822) = 44.4822 N  (since 1 lb force = 4.44822 N)…

Q: A new record for running the stairs of the Empire State Building was set on February 4, 2003. Thee…

A:

Q: I performed a lab using a toy car to go down a ramp that was positioned at different heights. For…

A: The work done by the force of gravity on car is calculated by the following equation. Here, m is…

Q: A spring has a natural length of 18 cm. If a 23 N force is required to keep it stretched to a length…

A: Force, F = 23 NFirst extension, x = 24 cm - 18 cm = 6 cm = 0.06 mSecond extension, X = 21 cm - 18 cm…

Q: A variable force of 5x-2 pounds moves an object along a straight line when it is x feet from the…

A: Variable force,

Q: Adam drove a bike 1260 m with an average speed of 115m/s. Suppose he applied the brakes to reduce…

A: According to the work-energy theorem, the work done by the brakes will be equal to the change in…

Q: A spring has a natural length of 28 cm. If a 23 N force is required to keep it stretched to a length…

A:

Q: A 45 kg athlete runs up a flight of stairs in 4 s. His net upward displacement is 9 m. What average…

A:

Q: Gurtej was driving his car at 120 km/hr when he decides to brake. His car glides to rest over a 26.4…

A: Write the given values with the suitable variables. u=120 km/hr=120×10003600 m/s=33.33 m/sv=0…

Q: QUESTION 10 10. The force required to hold a spring 0.5 m past its natural length is 8 N. Find the…

A:

Q: How much work done in k J( kilo joule) can a 3 hp (horsepower) motor do in 1 hour? (Write the full…

A: Power is the amount of force per unit velocity Power=force×velocity P=Force×distancetimeP×time=work…

Q: Engine power is sometimes expressed in terms of "horsepower." One horsepower was defined by James…

A:

Q: A skier of mass 63 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:- mass of the skier m= 63 kg height h= 40 m slop is The speed of the skier is v= 2.3 m/s…

Q: A variable force of 7x-2 pounds moves an object along a straight line when it is x feet from the…

A: Solution

Q: Elena and her classmates were attempting to measure the maximum power they can generate by running…

A: Given: The mass of the object is 55 kg. The height achieved by the object is 4 m. The time interval…

Q: Suppose that 4 J of work is needed to stretch a spring from its natural length of 36 cm to a length…

A: Work done is  when spring stretched from natural length  to Note:Find:(a) Work done needed to…

Q: in 1970 the population of the world was about 35x10^9 and about 2x10^20 J of work was performed…

A:

Q: 1. (a) What is the average useful power output of a person who does 7.00 x 106 J of useful work in…

A: average power output is given bywhere, is the work done is the time of work done.

Q: Procopio is diving a car (m= 1000 kg) at v= 11.11 mis when he stepped on the brakes. The car…

A:

Q: Suppose a 74 kg sprinter, starting from rest, runs the first 9 m in 3 s at constant acceleration, a…

A: Given Mass of a sprinter = 74 kg sprinter starting from rest, Distance traveled in first 3 sec = 9 m…

Q: A 5 kg ball falls from height of 28 m. What willhe potential energy of the ball after 1.2 second?…

A:

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at…

A: Weight force of the barbell, FW=400 N Displacement, d=2.20 m It is assumed that the efficiency of…

Q: When solving for the electric field using Gauss' Law, there is this surface that we draw on the…

A: The flux of the eletric fieldthrough any closed also called  Gaussian surface in Gauss's law.

Q: Calculate the work done by an archer in pulling a bow if she pulls her bowstring back 0.455 m by…

A:

Q: Suppose that 5 J of work is needed to stretch a spring from its natural length of 26 cm to a length…

A:

Q: During an energy-efficiency test, a student pulls a toy car up a ramp that is 2.5 m long. The…

A:

Q: The force needed to stretch a spring by x meters is given by F(x) = 3.6x Newtons. How much work is…

A:

Q: A 5.2kg box is raised from rest a distance 5.5m by an upward applied force of 3.4N. Find the work…

A: We will use work done formula,