Chemistry

Chemistry, 31.08.2019 16:10, 20vmiller

When a book sits on a shelf, what force (if any) does the shelf exert on the book?
a) friction
b) a normal force
c) a action force
d) the weight of the book
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Biology, 26.06.2019 00:30, fattypickeltoefungus

When a book sits on a shelf, what force (if any) does the shelf exert on the book? a. friction b. a normal force c. an action force d. the weight of the book

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Physics, 06.07.2019 23:00, 20lap01

Aboy sits motionless partway down a playground slide. the force of friction balances the force of gravity. a girl hands the boy a book. why does the boy still not move? a. holding the book does not effectively increase the mass of the boy. b. newton's first law of motion does not apply because the boy is at rest. c. the force of friction and the force due to gravity increase together. friction and gravity are still balanced. d. the mass of the book cancels out part of the mass of the boy.

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Physics, 07.07.2019 13:00, prettydoll19

An 1.0 kg mass book, initially at rest, is supported against a vertical wall, being pressed by a horizontal force of f 50 n module, as indicated in the figure. the acceleration of gravity has a modulus of 10.0m / s, the coefficient of static friction between the wall surface and the book is 0.25 and the coefficient of kinetic friction 0.20. mark the correct statement. a) the book slides along the wall and the modulus of the friction force is 10.0 n b) the book remains at rest and the module of the normal force of contact between the book is the wall is 10n c) the book remains at rest and the modulus of frictional force between the book and the wall is 12.5n. d) the book remains at rest and the modulus of frictional force between the book and the wall is 10 n e) the book slides along the wall and the module friction force is 12.5 n.

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Biology, 22.08.2019 17:30, shybug886

Force of gravity = fg = always in the direction of the center of the earthforce applied = fa = the force applied to an object by an outside forceforce of friction = ff = always opposes the motion of an objectforce in a spring = fs = a compressed spring will push, a stretched spring will pullnormal force = fn = when an object sits on a surface, that surface pushes back. thenormal force is always perpendicular to the surface of support.regarding the book. what is the actual value of both fn and fg in thiscase? o newtons45 newtons90 newtons

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When a book sits on a shelf, what force (if any) does the shelf exert on the book?
a) frictio...

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