I'm assuming his destination is towards the east so the answer would be 18 km towards the east.
<h2>
reasons- instead of two,i got you five</h2>
1.Energy efficiency saves you money.
2.Energy efficiency improves the economy.
3.Energy efficiency is good for the environment.
4.Energy efficiency improves national security.
5.Energy efficiency enhances quality of life.
Answer:
Hey buddy, here is your answer. Hope it helps you.
Explanation:
Yes, weight of a body is not constant, it varies with the value of acceleration due to gravity, g. Weight of a body is zero, when it is taken to the centre of the earth or in the interplanetary space, where g=0. Mass is the total matter in a body, while weight is the force by which the body is attracted.
Weight is never constant while mass is. So we can have weight zero but with some mass. This will happen when an object is at the centre of earth, as g=0 at centre of earth , so weight will be 0 while mass will always be constant everywhere
Answer:
The temperature rise is given as 21.35 K
Explanation:
The explanation is shown on the first second and third uploaded image
Answer:
(a) N₁= 1100 N
(b) N₂ = 716.66 N
(c) μs =0.65
Explanation:
We apply Newton's first law:
∑Fx = 0
∑Fy =0
∑F : algebraic sum of the forces in Newton (N)
∑MA=0
∑MA : algebraic sum of moments at point A.(N*m)
Look at the free body diagram in the attached graph
(a) Find the magnitude of the upward normal force applied by the ground on the ladder (N₁)
∑Fy = 0 positive (+) is upward
N₁-500-600=0
N₁= 500+600 = 1100 N
(b) Find the magnitude of the horizontal normal force (N₂) applied by the wall on the ladder.
H= 3m
∑MA=0 :positive moment (+) counterclockwise
Ff(3)-N₁(4)+500(2.1)+600(2) = 0 ,Ff: friction force
(3)Ff = 1100(4)-500(2.1)-600(2)
∑Fx = 0 ,positive (+) to the right
Ff-N₂ = 0
Ff=N₂
N₂ = 716.66 N
(c) Determine the minimum possible coefficient of static friction (μs) for the ladder-ground interaction, for the ladder to remain at rest.
Ff = μs *N₁
μs = Ff /N₁
μs =716.66 / 1100
μs =0.65