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Lyrx [107]
3 years ago
7

A hiker walls 9.4 miles at an angle of 60 degrees south of west. Find the west and south components of the walk

Physics
1 answer:
zheka24 [161]3 years ago
7 0

Explanation:

Given that, a hiker walls 9.4 miles at an angle of 60 degrees south of west. We need to find the west and south components of the walk.

From the attached figure, it is clear that, the west component of the walk is given by :

W=9.4\times cos(60)=4.7\ miles

The south component of the walk is given by :

S=9.4\times sin(60)=8.14\ miles

So, the west and south components of the walk are 4.7 miles and 8.14 miles respectively. Hence, this is the required solution.

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an apple in a tree has a gravitational potential energy of 175J and a mass of 0.36g . how high from the ground is the apple
Neko [114]
The equation for potential energy is denoted as; 

Pe = mgh,

where m = the mass, g = acceleration due to gravity, and h = vertical height of the apple. We are given the units for everything but height, which is also what we are solving for. We can then algebraically rearrange our initial equation to solve for h;

h = (Pe)/(mg)

Plug in your given units, and solve!





Post-check:

h = Pe/mg

h = 175J/(0.36g)(-9.81m/s^2)

h = appr. 49.5 meters

Note: Potential energy is a vector quantity; the displacement of the apple will be a negative number, but the distance itself, a scalar quantity, will be the absolute value of that.
5 0
3 years ago
Water can’t stick to itself. True or false?
astra-53 [7]

Answer:ture

Explanation:

6 0
3 years ago
Which statement is true for objects in dynamic equilibrium?
lakkis [162]

Answer:

The correct answer to the question is objects have zero acceleration.

Explanation:

Before answering the question, first we have to understand dynamic equilibrium .

A body moving with uniform velocity is said to be in dynamic equilibrium if the net external forces acting on the body is zero. Hence, the body is under balanced forces.

If the external forces acting on a body is not balanced, then the body will accelerate which will destroy its equilibrium condition. Hence, the necessary and sufficient condition for a body to be in dynamic equilibrium is that the forces are balanced.

When a body is in dynamic equilibrium, the body moves with uniform velocity along a straight line unless and until it is compelled by some external unbalanced forces.

Hence, the rate of change of velocity or acceleration of the body will be zero.

5 0
3 years ago
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kifflom [539]
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3 0
3 years ago
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LenaWriter [7]

Answer: 7.41 m/s

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