28. Which of the following processes requires the most work? A person lifts a 1 kg weight 2m off the floor. A person holds a 1 kg weight O stationary with outstretched arms for 10 hours. A person carrying a 50 kg sack of rice and covers a distance of 10m. A person lifts a 10 kg weight 1 moff the floor.

28. Which of the following processes requires the most work? A person lifts a 1 kg weight 2m off the floor. A person holds a 1 kg weight O stationary with outstretched arms for 10 hours. A person carrying a 50 kg sack of rice and covers a distance of 10m. A person lifts a 10 kg weight 1 moff the floor.

Name: 28. Which of the followingprocesses requires the mostwork?"A person l
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: 28. Which of the followingprocesses requires the mostwork?"A person lifts a 1 kg weight 2m offthe floor.A person holds a 1 kg weightO stationary with outstretched armsfor 10 hours.A person carrying a 50 kg sack ofrice and covers a distance of 10m.A

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: 17. GO A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the…

A: The given values are,

Q: 2. If a man lifts a 20.0-kg bucket from a well and does 6.00 kJ of work, how deep is the well?…

A: solution is given as

Q: 10. A 2200 kg truck travelling at 68 km/h slams on the brakes and skids to a stop. The frictional…

Q: When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow.…

Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…

Q: Your gasoline engine has a limited supply of gasoline, able to do 5000 J of work. If you weigh 800…

Q: Apply the work equation to determine the amount of work done, in N-m, by a 104 N force applied to…

A: Given data: Force (F) = 104 N Horizontal displacement (d) = 11.05 m Required: Work done (W)

Q: 11. You take a ride in a wagon. The wagon’s mass (including you) is 200 kg. A horse pulls it with a…

A: Total mass, m=200 kg Pulling force by the horse, F= 78.9 N Speed of the mass, v=3.7 m/s Displacement…

Q: Before the invention of the electric refrigerator in 1913, people kepi neir food cool with blocks of…

A: work done = Fx potential energy = - work done by conservative force

Q: 1. A force of 5 pounds is required to stretch a spring from ints natural length of 3 inches to a…

A: Force required to stretch a spring from x=3 inches to x=4 inches is F=5 pounds. We need to find the…

Q: 8. A B-double truck of mass 45 tonnes is travelling at a uniform velocity of 100 km/h. The driver…

A: Given data:Mass of truck, m = 45 tonnes = 45 x 1000 kg = 45000 kg Initial velocity, u = 100 km/h =…

Q: A smooth 0.165 kg hockey puck slides along a smooth floor at an initial speed of 1.0 m\s, and stops…

Q: A leamer weighing 800N runs up 20 stairs each 20cm high in 4 seconds. How much power is exerted by…

Q: A 1400-kgrace car can go from 0 to 100 km/h in 4.8 s . What average power is required to do this?…

Q: 10. A 15-kg object is dropped from the top of a building. After falling 10 meters, its speed is 12…

A: Given:- The mass of the object is m = 15 kg. The object dropped from the top of the building. The…

Q: A 5.0-kg cart is moving horizontally at 4.0 m/s. In order to change its speed to 6.0 m/s, the net…

A: Given: Mass of cart m=5.0 kg Initial speed u=4.0 m/s Final speed v=6.0 m/s To find net work done in…

Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…

A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ

Q: A baseball pitcher does work with histhrowing arm to give the ball a propertycalled kinetic energy,…

A: Part (i) In this case, the kinetic energy can be calculated as: KE1=12mv2KE1=120.145 kg20.0 m/s2×1…

Q: A horizontal force of 200 N is applied to a 55-kg cart across a 10-m horizontal surface. (a) If the…

Q: 3. A skier of mass 66 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

Q: 2. The spring shown below has k=140N/m. A .5kg block is places against the spring compressing it 11…

Q: [1.] An object of mass 7 kg is pulled by a rope with tension 80 N acting at an angle of 15 degrees…

Q: Calculate the work done when a 5.0 kg bag of apples is lifted 1.2 m off the ground. 13 c)…

Q: An elevator has a motor that can produce 25000 W. If this power were used to raise an 850 kg…

A: Power, P = 25000 WMass, m = 850 kgHeight, h = 35.5 mTime required, t = ?

Q: 4. A 0.25 hp motor is used to lift a load at the rate of 5 cm/s. How great a load can it lift at…

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

Q: Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of 30.0…

A: We know that the formula of the power is given as Power = EnergyTime We know that the energy is…

Q: 5. Starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0° incline. The eoeffieient of…

A: Explanation and solution shown in the picture below ?

Concept explainers

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows:

Topic Video

Question

100%

28. Which of the following
processes requires the most
work?"
A person lifts a 1 kg weight 2m off
the floor.
A person holds a 1 kg weight
O stationary with outstretched arms
for 10 hours.
A person carrying a 50 kg sack of
rice and covers a distance of 10m.
A person lifts a 10 kg weight 1 m off
the floor.

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

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 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

When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. (a) Compute the potential energy stored in the bow, if the arrow of mass 4.85 10-2 kg leaves the bow with a speed of 32.0 m/s. Assume that mechanical energy is conserved.(b) What average force must the archer exert in stretching the bow if he pulls the string back a distance of 30.0 cm?
3. to stretch it to 5.5 inches. FIND the work done in stretching the spring to 6 inches. Suppose a spring of natural length 5in requres a force of 2.5 pounds
5. If you tried to lift the object but couldn't, was any work done? Explain your answer.
12) A block has a mass 1989 grams and is setting on a flat, frictionless surface. The block is pushed along until it has a speed of 3.31 m/s. That force is removed, and then a short time later another force pulls upon the block via a massless rope angled at 26.6 degrees above the horizontal as shown below. The force is steady at 16.63 mN and acts for 33.3 seconds. So, what is the final speed of this block after this process? a)12.7 m/s b) 3.56 m/s c) 1.8 m/s d) 1.9 m/s e) 7.1 m/s
3. A force of 10 N is applied to a small cart for a distance of 2.0 m. (a) What work is done on the cart? (b) Assuming there are no frictional losses, what final kinetic energy does the force transfer to the cart? (c) If the mass of the cart is 10 kg, what is the final speed of the cart?
#15 A person pushes a m = 2.00 kg carton a distance d = 7.20 m along the floor by a constant force of magnitude F= 10.0 N directed at an angle = 26.0' bolow the horizontal as shown in the figure. Assumo the floor is frictionless. Dotormine the work done on tho carton by the applied force (the force on the carton exerted by the person).
4) Consider an 80 kg man and 320 kg horse both running along a road with the same kinetic energy. The man must run (A) with the same speed as the horse. (CSS) 4 times as fast as the horse. (B) twice as fast as the horse. (D) 16 times as fast as the horse.
For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant speed in a time of 1.60 s. What is the metabolic power, in kW (kiloWatts)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
1. After a tornado, a 0.55g straw was found embedded 2.3cm into the trunk of a tree. If the average force exerted o the straw by the tree was 65N, what was the speed of the straw when it hit the tree?Explain and draws.
9. A man pushes an 80-N crate up a frictionless slope that makes an angle of 30° with the horizontal. The man was able to push it to a distance of 5.0Om along the slope with a force parallel also to the slope. However the speed of the crate decreases at a rate of 1.5 m/s?. The work being done by the man is: A. -200 J В. 61J С. 140 J D. 200 J 14. A 6.0-kg block is released from rest 80 m above the ground. When it has fallen 60 m its kinetic energy is approximately: A. 4800 J В. 3500J C. 1200 J D. 120 J
In a time of T seconds, a motorcycle can accelerate from rest to the speed v. (a) Determine the amount of time (in terms of 7) required for it to accelerate from v to 6v if the power output remains constant. At = (b) Determine the speed of the motorcycle (in terms of v) 3T after starting. Vf=
Calculate the work done if a 60 kg block of ice is pulled across a smooth surface using a chain 25º from the horizontal that pulls with a force of 110 N for 120 meters.