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4 years ago

Which is true about a surface wave?

Physics

2 answers:

olga2289 [7]4 years ago

7 0

The answer is A hope this helped

kodGreya [7K]4 years ago

5 0

If I remember correctly I think the answer is answer A because it has both physical movement and particle movement

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21.-Una esquiadora olímpica que baja a 25m/s por una pendiente a 20o encuentra una región de nieve húmeda de coeficiente de fric

jeyben [28]

Answer:

y = 12.82 m

Explanation:

We can solve this exercise using the energy work theorem

W = ΔEm

friction force work is

W = fr . s = fr s cos θ

the friction force opposes the movement, therefore the angle is 180º

W = - fr s

we write Newton's second law, where we use a reference frame with one axis parallel to the plane and the other perpendicular

N -Wy = 0

N = mg cos θ

the friction force remains

fr = μ N

fr = μ mg cos θ

work gives

W = - μ mg s cos θ

initial energy

Em₀ = ½ m v²

the final energy is zero, because it stops

we substitute

- μ m g s cos θ = 0 - ½ m v²

s = ½ v² / (μ g cos θ)

let's calculate

s = ½ 20² / (0.55 9.8 cos 20)

s = 39.49 m

this is the distance it travels along the plane, to find the vertical distance let's use trigonometry

sin 20 = y / s

y = s sin 20

y = 37.49 sin 20

y = 12.82 m

8 0

4 years ago

Which is the function of a nucleus within a eukaryotic cell?

DerKrebs [107]

ANSWER
D) store genetic information that provides instructions for the cell

6 0

3 years ago

Formula for working maximum velocity?

Varvara68 [4.7K]

Answer:

v=Aω.

Explanation:

hope this helps you!!

8 0

3 years ago

Read 2 more answers

An air pump does 5,600 J of work to launch a water bottle rocket into the air. If the air pump applies 150 N of force to the roc

Alchen [17]

Answer: 53 m

Explanation:

Work = Force × Displacement

W= F s cosΘ

Where, s is the displacement and F is the force. Θ is the angle between force and displacement

F cosθ is the component of force acting in the horizontal direction.

The air pump applies F = 150 N force at an angle Θ = 45°

W = 5600 J

⇒s = W/F cosθ

$\Rightarrow s =\frac{5600 J}{150\times cos 45^o}\approx 53 m$

Thus, the horizontal distance the water bottle rocket travels is 53 m

8 0

3 years ago

Read 2 more answers

Scientists aboard the International Space Station are threatened by a 2.8 kg meteor hurtling toward them at 5.4 x 103 m/s. They

frez [133]

Answer:

c) 1.3 X 10⁵ N

Explanation:

Step 1: From equation of motion; V² = U² +2as

where, U and V are initial and final velocity respectively,

a is the acceleration and s is the distance traveled

(5400)² = 0² +2*a*193

a = (5400)²/ (386)

a = 75544.04 m/s²

Step 2: calculate the maximum force applied to the meteor

$F_{max} = m*a$

$F_{max} = 2.8*75544.04$ = 211,523.312 N

Step 3: calculate the average force applied to the meteor

$F_{avg} = \frac{1}{2}F_{max}$

$F_{avg} = \frac{1}{2}(211,523.312 N)$ = 105,761.7 N

$F_{avg} =$ 1.1 X 10⁵ N

The nearest option is C

4 0

3 years ago