Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. The current record for this race is about 9 min 30 s. If the record holder has a mass of 54 kg, what was his average power output during the race? W

Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. The current record for this race is about 9 min 30 s. If the record holder has a mass of 54 kg, what was his average power output during the race? W

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter3: Energy And Conservation Laws

Section: Chapter Questions

Problem 39P: . In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft....

See similar textbooks

Related questions

Q: A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now…

Q: d) pe graner album. The driver of a car (total mass=2200 kg) going 20 m/s brakes to a stop over a…

A: Total mass of car M = 2200 kg Initial speed of car u = 20 m/s Final speed v = 0 m/s Time taken…

Q: 33) If the fifth order minimum in the diffraction pattern of a thin slit is at 40° from the central…

Q: Part E Find the three lowest normal mode frequencies f1, f2, and f3. Express the frequencies in…

Q: A 1500 kg elevator, suspended by a single cable with tension 16.0 kN, measured to be moving upward…

A: The objective of the question is to determine whether the elevator is speeding up, slowing down, or…

Q: Investigators studying the effect of hitting a soccer ball with the head are using a force plate to…

Q: Use the circuit on the right. Calculate the Net Resistance (2). 24 V www 20 Ω Calculate the Net…

Q: A typical flying insect applies an average force equal to twice its weight during each downward…

A: The mass of the insect,The downward force applied by the insect,The distance moved for the each wing…

Q: The Liberty Bell has a mass of 943 kg. It is too hea However, imagine a rope was developed that coul…

A: We have a given a liberty ball with mass, .We have a rope…

Q: Mount McKinley (also called Denali) is the tallest mountain in North America, with a height of 6,200…

A: Mass of the person is Vertical distance traveled by the person is Note:Gravitational acceleration is…

Q: skill. A thin rod of mass M = 0.570 kg and length = 2.70 m hangs from a friction-free pivot at its…

A: Mass of thin rod M = 0.570 kg Length of thin rod L = 2.70 m. mass of Velcro covered ball m = 1.05…

Q: Your free body diagram for Part 1 should have looked it this. F max Drag and drop the heads and…

Q: A particle is initially moving along the positive x-axis at a speed of 10.6 m/s. After 2.05 s, the…

Q: Light of wavelength λ = 525 nm in air enters a glass prism. The index of refraction of air is na and…

Q: A laser beam is incident on two slits with separation d = 0.026 mm. A screen is placed L = 3.2 m…

A: So the given situation is as follows:

Q: I gave you a multiple choice question and you gave me an answer that wasn't even there...

Q: A disk of mass 3.8 kg and radius 45 cm with a small mass of 0.3 kg attached at the edge is rotating…

Q: A baseball is thrown from the top of a tall building with an initial velocity of 14 m/s from a…

Q: The figure shows a double slit located a distance x = 2.85 m from a screen, with the distance from…

Q: The polar ice caps have a combined mass of about 2.55 x 1019 kg. If all of the ice in the polar ice…

Q: Show equations and all work clearly please!

A: The objective of this question is to find out the time the ball is in the air and the horizontal…

Q: During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud -…

A: So we have given yhe potential difference between cloud and ground i.e is Vcloud -Vground = 1.5x108…

Q: Part B What is the work W₁ done on the box by the normal force? Express your answers in joules to…

Q: When a proton has a velocity of (2i+8j)*10^6 m/s , it experiences a force of -1.6*10^-13k N. . In a…

A: When the direction of the movement of the particle is towards the +z-axis and the force is towards…

Q: 9. If the cable has a tension of 3 N, determine the acceleration of block B. A) 4.26 m/s² ↑ B) 4.26…

A: Tension in cable T=3 N Mass of block B, mB=4 kg

Q: The juggling skateboarder is back outside He starts with a speed of of 3.0 m/s at a height ten…

A: The objective of the question is to find the speed of the skateboarder when he is two meters above…

Q: (d) 600 N A 2300 N-m B Lm (b) 800 N 200 N.m 900 N.m B 400 N A rce for the beam is [ NĮ. point A to…

A: The equivalent force for the beam is 600 Newton Torque ×distance = constant

Q: what is the wavelength of the photon emitted when an electron jumps from n=3 to n=2 in a H atom.…

Q: A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.0…

Q: Figure 3 y 0 E TE 4 X 2 of 2 ▼ Correct Part C (Figure 2) shows two vectors E and F. What is the…

Q: Which of the following statements are true? Select all correct. options: Only conservative…

A: Statment (a) is incorrect .Conservation of energy and work energy theorem can be used for both…

Q: A50 g ice cube can slide up and down a trictionless 30 slope. At the bottom, a spring with spring…

A: When the spring is released, the spring potential energy is equal to the kinetic energy. Further,…

Q: An ambulance driver is rushing a patient to the hospital. While traveling at 72 km/h, she notices…

A: Initial speed, u = 72 km/h = (72×5)/18 m/s = 20 m/sDistance, s = 52 mTime, t = 2.17 sAcceleration, a…

Q: trest pulls 0.10 kg of water into its mantle, then ejects this water at a emarkable 45 m/s.

A: Given data:Mass of squid, Mass of water, Velocity due to ejection of water,

Q: 2. When the 50-kg cylinder is released from rest, the spring is subjected to a tension of 60 N.…

A: Mass of cylinder, m=50 kg released from rest vi=0 Tension, T=60 N Cylinder had fallen h=200 mm = 0.2…

Q: If a snowball melts so that its surface area decreases at a rate of 5 cm²/min, find the rate at…

Q: The mysterious visitor that appears in the enchanting story The Little Prince was said to come from…

Q: In the figure, point P₂ is at perpendicular distance R = 25.8 cm from one end of straight wire of…

Q: Two tiny conducting spheres are identical and carry charges of -29.8 μC and +63.7 μC. They are…

A: Charge q1 = = q2 is = and r is 3.57 cm = 0.0357 m

Q: A particle is traveling in a straight line. Its position at time t in seconds is given by s(t) = 5vt…

Q: A movie stuntman (mass 80.0 kg) stands on a window ledge 5.0 m above the floor. Grabbing a rope…

A: We have given the mass of the stuntman as Mass of villain as .stuntman is 5 m above floorWe have to…

Q: The figure shows a wire ring of radius a 1.88 cm that is perpendicular to the general direction of a…

A: Radius of wire,a = 1.88 cmMagnetic field,B = 3.17 mTAngle= 36.70current carried by ring ,I = 4.94 mA

Q: Part A A 16 g particle is moving to the left at 29 m/s. How much net work must be done on the…

A: The objective of the question is to find out the amount of net work that must be done on a particle…

Q: 10. Suppose the interference pattern shown in the figure below is produced by monochromatic light…

A: The objective of this question is to find the wavelength of light that is producing an interference…

Q: Figure IO 10.0 cm 1 of 1 Find the magnitude of the magnetic field at point P2, 27.0 cm to the right…

Q: A small spherical insulator of mass 8.90 × 10-2 kg and charge +0.600 µC is hung by a thin wire of…

Q: What factors need to be taken into account when designing inflatable devices that float on water?…

A: When designing inflatable devices that float on water, several factors need to be taken into…

Q: A thin-walled, hollow spherical shell of mass m and radius r starts from rest and rolls without…

Q: How much work is done lifting a 35 pound object from the ground to the top of a 30 foot building if…

Q: Two ropes are attached to a wagon, one horizontal to the west with a tension force of 30N, and the…

Concept explainers

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.

Question

Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. The current record for this race is about 9
min 30 s. If the record holder has a mass of 54 kg, what was his average power output during the race?
W

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Conceptual Introduction

VIEW

Step 2: Calculation of the average output power

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 10 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.00 slope at constant speed, as shown below. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by fiction as the sled moves 30.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?
A horizontal force of 20 N is required to keep a 5.0 kg box traveling at a constant speed up a frictionless incline for a vertical height change of 3.0 m. (a) What Is the work done by gravity dining this change in height? (b) What Is the work done by the normal force? (c) What is the work done by the horizontal farce?
The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 8.00 102 N as it contracts a distance of 7.5 cm in a 75-kg male.3 (a) How much work can the biceps muscles (one in each arm) perform in a single contraction? (b) Compare this amount of work with the energy required to lift a 75-kg person 40. cm in performing a chin-up. (c) Do you think the biceps muscle is the only muscle involved in performing a chin-up?
(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
“ E=K+Uconstant is a special case of the work energy theorem.” Discuss this statement.
. In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft. In 2003, Australian Paul Crake completed the race in a record time of 9 min and 33 S, Mr., Crake weighed 143 lb (65 kg) , (a) How much work did Mr., Crake do in reaching the top of the building? (b) What was his average power output (in ft-lb/s and in hp)?
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0° slope at constant speed, as shown in Figure 7.37. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?
(a) What is the average useful power output of a person who does 6.00106 J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
A large cruise ship of mass 6.50 107 kg has a speed of 12.0 m/s at some instant. (a) What is the ships kinetic energy at this time? (b) How much work is required to stop it? (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.50 km?
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.0° below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?
. An elevator is able to raise 1,000 kg to a height of 40 m in 15 s. (a) How much work does the elevator do? (b) What is the elevator’s power output?
As a simple pendulum swings back and forth, the forces acting on the suspended object are (a) the gravitational force, (b) the tension in the supporting cord, and (c) air resistance. (i) Which of these forces, if any, does no work on the pendulum at any time? (ii) Which of these forces does negative work on the pendulum at all times during its motion?