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C Exercise 5.14 A 740 kg, light-weight helicopter ascends from the ground with an acceleration of 4.00 m/s Part A...
Part A If a person does 70 J of work in moving a 30 kg box...
Part A If a person does 70 J of work in moving a 30 kg box over a 14 m distance on a horizontal surface, what is the minimum force required? Express your answer using two significant figures. 30 AXC ROO? Submit Request Answer C Exercise 5.2 A50 kg box slides a 10 m distance on ice. Part A If the coefficient of kinetic friction is 0.28, what is the work done by the friction force? Express your answer using...
Fisica 9A Cerros < Trabajo C Exercise 5.16 (IE) Part A A student could either pull or push, at an angle of 30"...
Fisica 9A Cerros < Trabajo C Exercise 5.16 (IE) Part A A student could either pull or push, at an angle of 30" from the horizontal, a 45 kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.15. The crate is to be moved a horizontal distance of 22 Compared with pushing, pulling requires the student to do work less the same Submit Request Answer Part B Calculate the minimum work...
Problem 4.39 Two crates, one with mass 4.00 kg and the other with mass 6.00 kg,...
Problem 4.39
Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected by a light rope (Figure 1). A woman wearing golf shoes (so she can get traction on the ice) pulls horizontally on the 6.00 kg crate with a force F that gives the crate an acceleration of 290 m/s 6.00 kg よ 00 kg T he woman is pulling two c rope that connects...
A helicopter lifts a 66.5 kg astronaut 13.7 m vertically from the ocean by means of...
A helicopter lifts a 66.5 kg astronaut 13.7 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by the force from the helicopter? 9.82x103 3 You are correct. Previous Tries Your receipt no. is 162-8512 How much work is done on the astronaut by the gravitational force on her? 8928.29 J Submit Answer You have entered that answer before Incorrect. Tries 3/10 Previous Tries...
< Trabajo C Exercise 5.8 A block on a level frictionless surface has two horizontal forces...
< Trabajo C Exercise 5.8 A block on a level frictionless surface has two horizontal forces applied, as shown in the figure(Figure 1). Part A What force Fy would cause the block to move to the right with normal force on the block to be the same as its weight Express your answer using two significant figures. Figure ( 1 of 1 VAEDRO? F - F2 = ? Submit Request Answer 60° 130° Part B F = 90 N If...
help with part 5 1. A 125-kg load is lifted 12.0 m vertically with an acceleration...
help with part 5
1. A 125-kg load is lifted 12.0 m vertically with an acceleration a -0.32g by a single cable. Determine: (a) the tension in the cable, (b) the net work done on the load, (c) the work done by the cable on the load, (d) the work done by gravity on the load, and (e) the final speed of the load assuming it started from rest. 2. A 1.60-m tall person lifts a 2.10-kg book from the...
Part A A 4.31-kg watermelon is dropped from rest from the roof of a 17.5-m-tall building...
Part A A 4.31-kg watermelon is dropped from rest from the roof of a 17.5-m-tall building and feels no appreciable air resistance. Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Express your answer with the appropriate units. НА ? W = Value Units Submit Request Answer Part B Just before it strikes the ground, what is the watermelon's kinetic energy? Express your answer with the appropriate units. μΑ ? Value...
A0.16 kg pinecone falls 16 m to the ground, where it lands with a speed of...
A0.16 kg pinecone falls 16 m to the ground, where it lands with a speed of 13 m/s Part A How much work was done on the pinecone by air resistance? Express your answer using two significant figures. μν ΑΣφ J Previous Answers Request Answer Submit x Incorrect; Try Again; 5 attempts remaining Part B What was the average force of air resistance exerted on the pinecone? Express your answer using two significant figures ΕΠ ΑΣφ |F
C Exercise 5.10 A crate is dragged 3.5 m along a rough floor with a constant velocity by a worker applying a force...
C Exercise 5.10 A crate is dragged 3.5 m along a rough floor with a constant velocity by a worker applying a force of 300 N to a rope at an angle of 30° to the horizontal Part B How much work does each of these forces do? Express your answers using two significant figures separated by commas. AXO Wormal, gravity, Worker, Wfriction = Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
Part C Review A 4.5 kg box slides down a 5.2-m -high frictionless hill starting from rest, across a 2.3-m -wide horizontal surface then hits a horizontal spring with spring constant 470 N/m How far i...
Part C Review A 4.5 kg box slides down a 5.2-m -high frictionless hill starting from rest, across a 2.3-m -wide horizontal surface then hits a horizontal spring with spring constant 470 N/m How far is the spring compressed? Express your answer using two significant figures The other end of the spring is anchored against a wall The ground under the spring is frictionless, but the 2.3-m- long horizontal surface is rough. The coefficient of kinetic friction of the box...
Part A If a person does 70 J of work in moving a 30 kg box over a 14 m distance on a horizontal surface, what is the minimum force required? Express your answer using two significant figures. 30 AXC ROO? Submit Request Answer C Exercise 5.2 A50 kg box slides a 10 m distance on ice. Part A If the coefficient of kinetic friction is 0.28, what is the work done by the friction force? Express your answer using...
Fisica 9A Cerros < Trabajo C Exercise 5.16 (IE) Part A A student could either pull or push, at an angle of 30" from the horizontal, a 45 kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.15. The crate is to be moved a horizontal distance of 22 Compared with pushing, pulling requires the student to do work less the same Submit Request Answer Part B Calculate the minimum work...
Problem 4.39
Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected by a light rope (Figure 1). A woman wearing golf shoes (so she can get traction on the ice) pulls horizontally on the 6.00 kg crate with a force F that gives the crate an acceleration of 290 m/s 6.00 kg よ 00 kg T he woman is pulling two c rope that connects...
A helicopter lifts a 66.5 kg astronaut 13.7 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by the force from the helicopter? 9.82x103 3 You are correct. Previous Tries Your receipt no. is 162-8512 How much work is done on the astronaut by the gravitational force on her? 8928.29 J Submit Answer You have entered that answer before Incorrect. Tries 3/10 Previous Tries...
< Trabajo C Exercise 5.8 A block on a level frictionless surface has two horizontal forces applied, as shown in the figure(Figure 1). Part A What force Fy would cause the block to move to the right with normal force on the block to be the same as its weight Express your answer using two significant figures. Figure ( 1 of 1 VAEDRO? F - F2 = ? Submit Request Answer 60° 130° Part B F = 90 N If...
help with part 5
1. A 125-kg load is lifted 12.0 m vertically with an acceleration a -0.32g by a single cable. Determine: (a) the tension in the cable, (b) the net work done on the load, (c) the work done by the cable on the load, (d) the work done by gravity on the load, and (e) the final speed of the load assuming it started from rest. 2. A 1.60-m tall person lifts a 2.10-kg book from the...
Part A A 4.31-kg watermelon is dropped from rest from the roof of a 17.5-m-tall building and feels no appreciable air resistance. Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Express your answer with the appropriate units. НА ? W = Value Units Submit Request Answer Part B Just before it strikes the ground, what is the watermelon's kinetic energy? Express your answer with the appropriate units. μΑ ? Value...
A0.16 kg pinecone falls 16 m to the ground, where it lands with a speed of 13 m/s Part A How much work was done on the pinecone by air resistance? Express your answer using two significant figures. μν ΑΣφ J Previous Answers Request Answer Submit x Incorrect; Try Again; 5 attempts remaining Part B What was the average force of air resistance exerted on the pinecone? Express your answer using two significant figures ΕΠ ΑΣφ |F
C Exercise 5.10 A crate is dragged 3.5 m along a rough floor with a constant velocity by a worker applying a force of 300 N to a rope at an angle of 30° to the horizontal Part B How much work does each of these forces do? Express your answers using two significant figures separated by commas. AXO Wormal, gravity, Worker, Wfriction = Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
Part C Review A 4.5 kg box slides down a 5.2-m -high frictionless hill starting from rest, across a 2.3-m -wide horizontal surface then hits a horizontal spring with spring constant 470 N/m How far is the spring compressed? Express your answer using two significant figures The other end of the spring is anchored against a wall The ground under the spring is frictionless, but the 2.3-m- long horizontal surface is rough. The coefficient of kinetic friction of the box...
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