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vaieri [72.5K]
3 years ago
5

the royal Gorge Bridge in Colorado rises 321 m above the Arkansas river. suppose you kick a rock horizontally off the bridge. Th

e magnitude of the Rock's horizontal displacement is 45.0 m. Find the speed at which the rock was kicked​
Physics
1 answer:
KengaRu [80]3 years ago
5 0

Answer:

2.48 m/s

Explanation:

We can use the kinematic equation,

s = ut +½at²

Where

s = displacement

u = initial velocity

t = time taken

a = acceleration

Using the equation in vertical direction,

321 = 0×t +½×g×t², u = 0 because initial vertical velocity is 0

We get t = 8.01 s

Using the equation in the horizontal direction,

52 = u×8.01 +½×0×(8.01)²,. a = 0 because no unbalanced force act on object in that direction

So u = 2.48 m/s

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m = 62.14 g

Explanation:

Energy used to melt the ice is the energy released by the condensation of the water forms on the glass

so here we have

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How do altitude temperature and air pressure relate
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A transverse wave is described by the expression y= 0.05 cos(5.25x-1775t) 1- What is the wavelength of this wave?​
jeka57 [31]

Answer:

1.196 m

Explanation:

Given the wave equation :

y= 0.05 cos(5.25x-1775t)

Recall the general traverse wave relation :

y(x, t) = Acos(kx - wt)

A = Amplitude

To Obtian the wavelength ;

We compare the both equations :

Take the value of k ;

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