Q. a) whatis the energy required to walk 20km at5 km/h ?From the table. the energy rate o walking activity at5 Km/hr is 3.8 kc/minThe energy vequived t wbik 20kwes,8 Ka/min X2kmX 6o min Ar x 5Km/hrEnergy-g1z kad

SOlution: given that distance = 20 km speed = 5 km/h

Q. a) whatis the energy required to walk 20km at 5 km/h ? From the table. the energy rate of walking activity at 5 Km/hr is 3.8kc/min The energy veguived D ubik 20kw=S,8 Ka/min X 2skm X 60 minAr X5Km/hr Energy- g1z kal

Q. a) whatis the energy required to walk 20km at 5 km/h ? From the table. the energy rate of walking activity at 5 Km/hr is 3.8kc/min The energy veguived D ubik 20kw=S,8 Ka/min X 2skm X 60 minAr X5Km/hr Energy- g1z kal

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 2CQ: The force exerted by a diving board is conservative, provided the internal friction is negligible....

See similar textbooks

Related questions

Q: 09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000…

A: Given : Lifting mass = 10 kg Height = 1m Number of times = 1000 Energy supplied by fat per kg…

Q: A 7.00 - kg bowling ball moves at 3.00 m/s. How fast must a2.45 - g Ping - Pong ball move so that…

A: According to law of conservation of energy.

Q: [kW] #3. At midday, solar energy strikes the earth with an intensity of about 1 . What is m² the…

A: Given data The intensity of solar energy is I=1 kW/m2 The energy collected is E=150 MJ The time is…

Q: A spring gun with a constant 4 N/m is compressed 2 meters from its natural length and then shoots a…

Q: What work needs to be done to get a 1000kg car from 90km/h to 108 km/h? A.) 12.5 kJ B.)…

A: Given Mass of the car is m=1000 kg Initial speed of the car is v0=90 km/h=90km1 h×1000 m1 km×1h60…

Q: What is the work done by a 16-watt electric fan in 30 minutes? O 28 kJ 31 kJ O 17 kJ 18 kJ

Q: What is the energy E required to accelerate a 1445 kg car from rest to 29 m/s? Compared to the…

Q: An 68.0-kg man eats a banana of energy content 436 kJ (104 kcal). If all of the energy from the…

Q: of U; = 50 J. Assuming there are no other outside forces acting on the object, how Suppose an object…

Q: A truck has four times the mass of a car and is moving with twice the speed of the car. If Kt and Kc…

A: Let mass of the car is m and speed v. Then the kinetic energy of the car is, Kc=12mv2. Given, mass…

Q: Two railroad cars, each of mass 5094kg and traveling 82.8km/h in opposite directions, collide…

A: Given speed of both car v= 82.8 km/h =23 m/s Mass of each car M= 5094 kg According to law of energy…

Q: A block sliding along a horizontal frictionless surface with speed v collides with a spring and…

A: Write the expression for conservation of energy

Q: A truck has four times the mass of a car and is moving with twice the speed of the car. If Kt and Kc…

A: Given data: Mass of truck (mt) = 4mc Speed of truck (vt) = 2vc Required: Relationship between…

Q: What mass of butter, which has a usable energy content of6.0 Cal/g (= 6000 cal/g), would be…

A: Equate gravitational potential energy with the energy equivalent of the butter

Q: What are some reasons the total energy of an object might change while traveling through space?

A: To find Reason for the total energy change for an object while traveling through space.

Q: A 100-g Frisbee is thrown at a speed of 5.5 m/s, 1.3 m above the ground. The Frisbee has a potential…

Q: A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the electron is…

Q: (II) Two bullets are fired at the same time with the samekinetic energy. If one bullet has twice the…

A: The formula for the kinetic energy is, Here, v is the velocity of a bullet and m is the mass of a…

Q: A man spends 2.4 kJ energy in displacing a body by 48 m in the direction in which he applies force…

A: Given, Work done by man, W = 2.4 kJ distance moved, d = 48 m time, t = 1.5 s

Q: A 15 kg cat sits on top of a 4-storey house. What is its GPE relative to the ground from the roof?…

Q: At an elevation of h=2.90m, the following are the recorded energy data and speed of a skater on the…

Q: A 5-gm bullet is propelled by a powder charge producing 500 Cal of usable energy. What is the bullet…

Q: · A projectile of mass 9.4 kg is fired straight up with an initial speed of 470 m/s. How much higher…

Q: Compared to the amount of energy required to accelerate a car from rest to 10 miles per hour, the…

Q: What amount of work that need to be done by an external force on a particle on a frictionless,…

A: Given:work that need to be done by an external force on a particle on a frictionlesshorizontal…

Q: Find the total energy of the object. Find the height of the object when its speed is 100 m/s. Find…

Q: If you run down some stairs and stop, what happens to your kinetic energy and your initial…

A: In the absence of dissipative forces, the total mechanical energy of closed system remains…

Q: A linear spring has a free length of 34.4 cm. When it is under a hanging load of 41333N, its total…

A: free length (L) = 34.4 cm = 0.344 m hanging load = 41333 N total length = 788.7 cm = 7.887 m…

Q: A 2.5 kg bowling ball is tied to a 1m long string attached to the ceiling. The ceiling is 5 m above…

A: Mass,m=2.5 kg.

Q: 5. How fast would a 61 kg person have to run (in m/s) in order to have same energy as that of a 110…

Q: A 500-kg satellite is in a circular orbit at an altitude of 500 km above the Earth’s surface.…

Q: What is the Kinetic Energy of the car with a mass of 0.032 kg as it exits the track? KE = 1/2mv

A: Given- Mass of car (m)= 0.032 Kg Let take "v" is velocity of car by which it exits from the track.

Q: A 0.15 kg ball is travelling up with an initial speed of 18 m/s. How will the energy type change as…

A: When the ball is travelling upward, it has initial kinetic energy. The initial speed decreases where…

Q: The metabolic power for typing is 150 W for bob. For how long would bob have to type to use all the…

A: Power = Energy / time Time = Energy / power Energy = 5660 kJ = 5660000 J Power = 150 W Time =…

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

A: Data provided: Weight of barbell (mg) = 400 N Height from ground (h) = 2.20 m Time (t) = 1.60 s…

Q: If a typical city consumes electrical energy at a rate of 2.0 GW (that's 2 billion joules per…

A: Given data The power is given as P = 2 GW. The time duration is given as t = 14 weeks. The speed of…

Q: While running, a person dissipates about 0.600 J of chemical energy to mechanical energy per step…

Q: A 2 kg object moves with a velocity of 4 m/s for a time of 10 seconds. How much KE does the object…

A: Given data: Mass (m) = 2 kg Velocity (v) = 4 m/s Required: Kinetic Energy

Q: (2 18. A toy roller coaster is shown in the diagram. A 1.5kg trolley leaves point A and travels…

Q: Suppose that the average U.S. household uses 14100 kWh (kilowatt-hours) of energy in a year. If the…

Q: An energy-efﬁcient lightbulb, taking in 10.0 W of power, can produce the same level of brightness as…

Q: A 400 kg satellite is in a circular orbit at an altitude of 425 km above the Earth's surface.…

Q: A 68.2-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

Q: Water flows over a section of Niagara Falls at a rate of 1.30 × 106 kg/s and falls 52.0 m. What is…

Question

Q. a) whatis the energy required to walk 20km at
5 km/h ?
From the table. the energy rate o walking activity at
5 Km/hr is 3.8 kc/min
The energy vequived t wbik 20kwes,8 Ka/min X2km
X 6o min Ar x 5Km/hr
Energy-g1z kad

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

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 a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30 of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is about 140 Mi/gal.) (a) What is the magnitude of the force exerted to keep the car moving at constant speed? (b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates.
A single force F(x)=4.0x (in newtons) acts on a 1.0-kg body. When x=3.5 m, the speed of the body is 4.0 m/s. What is its speed at x = 2.0 m?
A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man?(b) If the man’s body is 25 efficient, how much power does he expend?
A particle of mass 2.0 kg moves under the influence of the force F(x)=(3/x)N. If its speed at x=2.0 m is v=6.0 m/s, what is its speed at x = 7.0 m?
A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface with K=0.50 . Find the work done over a distance of 10 cm by (a) the horizontal force, (b) the frictional force, and (c) the net force. (d) What is the change in kinetic energy of the box?
An electron in a television tube is accelerated uniformly from rest to a speed of 8.4107 m/s over a distance of 2.5 cm. What is the power delivered to the electron at the instant that its displacement is 1.0 cm?
In a Coyote/Road Runner cartoon clip (https://openstaxcollege.org/l/21coyroadcarcl), a spring expands quickly and sends the coyote into a rock. If the spring extended 5 m and sent the coyote of mass 20 kg to a speed of 15 m/s, (a) what is the spring constant of this spring? (b) If the coyote were sent vertically into the air with the energy given to him by the spring, how high could he go if there were no non-conservative forces?
Check Your Understanding What potential energy U(x) can you substitute in Equation 8.13 that will result in motion with constant velocity of 2 m/s for a particle of mass 1 kg and mechanical energy 1 J?
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work does the archer do on the string in drawing the bow?
A person drops a pebble of mass m1from a height h, and it hits the floor with kinetic energy K. The person drops another pebble of mass m2, from a height of 2h , and it hits the floor with the same kinetic energy K. How do the masses of the pebbles compare?
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.Oc 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?