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Throughout most of human history, people lived in relatively small, egalitarian bands. With the advent of farming, stratified societies began to emerge and today dominate the human landscape, explain Diamond’s thesis as to:

A. Why the institutions of stratified societies were forced to emerge in the first place.

1)A 17.0 kg box is released on a35.0° incline and acceleratesdown theincline at 0.270 m/s². Find thefriction forceimpeding its motion.
1 N
What is the coefficient of kinetic friction?
2

A square object with a mass of 22kg needs to be moved up a 22 degree incline. A massless rope is tied to the object and is pulled with a force at 27 degrees. Coefficient of static friction between the incline and the box is .55. What is the minimum force needed to start the object into motion? After getting the object to move the rope is released. If the coefficient of kinetic friction is .20 what is the objects acceleration as it slide down.

a teacher is cleaning he finds a 15 kg box that needs to be hauled up a 25 degree incline to the trash. To do this, he ties a massless rope around the bos and pulls with a force at a 32 degree angle. If coefficient of static friction between the incline and the box is .70, what isthe minimum force, needed to start the box into motion? Assume the box will slide up the incline.

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A 15kg box need to be hauled up a 25 angle incline to the trash. to do this you tie a massless rope around the box and pulls with a force F at a 32 angle. If the coefficient of static friction between the incline and the box is .70 what is the minimum force, F needed to start the box into motion? Assume the box will slide up the incline. b.)After getting the box to move you let go of the rope. If the coefficient of kinetic friction is .25 what is the box's acceleration as it slides down the incline?

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A 6.00kg box slides up a 8.00 m long friction incline at an angel of 30.0 degrees by a force 50.0 N parallel to the incline. The coefficient of kinetic friction is 0.100. The work done against friction is?

A 22.0 kg box slides down a 11.0 m long incline at an angle of 35.0 degrees with the horizontal. A force of 45.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 15 degrees to the incline and above the incline. If the incline has a coefficient of kinetic friction of 0.135, what is the increase in kinetic energy of the box?

a blox is sliding up incline that makes an angle of 31.7 degrees with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.132. The initial speed of the box iat the bottom of the incline is 4.93 m/s. how far does the box travel along the incline before coming to rest?

A 22.0 kg box slides down a 11.0 m long incline at an angle of 35.0 degrees with the horizontal. A force of 45.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 15 degrees to the incline and above the incline. If the incline has a coefficient of kinetic friction of 0.135, what is the increase in kinetic energy of the box?

write a bio on Julie Mehretu share what they are famous for, how they were influenced by their surroundings, and peers. This is not just a report make it your own. You will need to use proper grammar, spelling, and sentence structure. Make sure to cite your sources.  You will find a link how to cite in APA format.

How were you taught to prepare for the future? What impact do you think that knowledge will have on the next seven generations of people to come?

Help, I dont understand anything about the friction problems! I am stuck on all of them! If you have any suggestion let me know. Chapter 4 number 48 is really messing me up. The question is A student moves a box (25.0kg) by a rope with a force of 80.0 N at an angle up an incline of 25 degrees above the horizontal. The coefficient of kinetic force is .300. A) find acceleration of box B)student now starts up an incline of 10 degree keeping a 80 N force directed at 25 degrees above the line of incline. If the coefficient of friction has not changed whats the acceleration of the box?

A student decides to move a box of books into her dormitory room bypulling on a rope attached to the box. She pulls with a force of128.0 N at an angle of 18.0° above the horizontal. The box has amass of 25.0 kg, and the coefficient of kinetic friction betweenbox and floor is 0.300.

(a) Find the acceleration of the box.
(b) The student now starts moving the box up a 10.0° incline,keeping her 128.0 N force directed at 18.0° above the line of theincline. If the coefficient of friction is unchanged, what is thenew acceleration of the box?
(c) Magnitude?
(d) direction?

A student decides to move a box of books into her dormitory roombypulling on a rope attached to the box. She pulls with a forceof110.0 N at an angle of 23.0° above thehorizontal. The box has amass of 25.0 kg, and the coefficient ofkinetic friction between boxand floor is 0.300.

(a) Find the acceleration of the box.


(b) The student now pulls the moving box up a 10.0° incline,keepingher 110.0 N force directed at23.0° abovethe line of the incline. Ifthe coefficient of friction isunchanged, what is the newacceleration of the box?

a student pulls on a rope attached to a box of books and moves thebox down the hall. the student pulls with force of 185 N at anangle of 25.0 above the horizontal. the box has a mass of 35.0 kg,and kinetic friction between the box and the floor is 0.27. findthe acceleration of box

a student pulls a box of books on a smooth horizontal floor with aforce of 100 N in a direction of 37 degrees above the horizontal.if the mass of the box and the books is 40 kg, what is the normalforce on the box?
a. 332 N
b. 312 N
c. 392 N
d. 292 N

A boy pulls a box of mass 25 kg across a flat, level floor with aforce of 45 N directed
at 37° above the horizontal. If the coefficient of kinetic frictionis 0.10, what is the
acceleration of the box? Now the boy pushes the box with the sameforce but directed
at 37° below the horizontal. What is the acceleration now?

A boy pushes a box with a force of 75N. How far will the box travel if he does 400J of work