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Sveta_85 [38]
3 years ago
9

Give three examples from the lab where potential energy was converted to kinetic energy

Physics
1 answer:
sdas [7]3 years ago
5 0
What did your lab consist of?

It could be.. -the fall falling

-letting the ball go down the slide

-Kara went down the slide

-a rubber band was shot

-a gun was shot

-when the balloon filled with water exploded

-when the bomb exploded.

-Susan let herself drop off the fifty story building to the floor.

They're all examples of potential energy going on to kinetic energy.
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A boat has a mass of 6800 kg. Its engines generate a drive force of 4100 N due west, while the wind exerts a force of 800 N due
mezya [45]

Answer:

The boat's acceleration are:  a= 0.3 m/s² in west direction.

Explanation:

Fm= 4100 N

Fwi= 800 N

Fwa= 1200 N

Fm - Fwi - Fwa= m *a

clearing a:

a= 0.3 m/s²

8 0
4 years ago
I NEED some help please!
andrew11 [14]
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3 0
4 years ago
What is the nineth plant closet to the sun
marusya05 [52]
My Very Excellent Mother Just Served Us Nachos 
(or Nine pickles if Pluto was a planet)

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
(Pluto)

hope that helped
4 0
3 years ago
Read 2 more answers
Electrical wires suspended between two towers form a catenary (see figure) modelled by the equation shown below, where x and y a
RideAnS [48]
Given that the arc length is:
s = ∫ √[1² + (dy/dx)²] dx 

<span>So arc length between the two points is then: </span>
<span>s = 2*20sinh(x/20)
   = 40sinh(x/20) </span>

<span>The straight distance between the two points is : d = 2x </span>
<span>So, x = d/2.
         = 40/2
         = 20 m </span>

<span>Plug this into the arc length equation to get:
s = 40sinh[20/20)]
   =40* ½ (e - 1/e) </span>
<span>   = 47 m</span>
8 0
3 years ago
Let's begin with the angular acceleration of a compact disk (CD). To play music the CD must rotate at high speed while a laser r
aliya0001 [1]

Answer:

\omega = 754 rad/s

t = 6.6 \times 10^{-4} s

\alpha = 188.5 rad/s^2

Explanation:

Frequency of the disc is given by the

f = 7200 rev/min

here we know that

f = \frac{7200}{60} rev/s

f = 120 rev/s

now we have

\omega = 2\pi f

\omega = 2\pi(120) = 754 rad/s

Now we know that its angular speed is 754 rad/s

now to find the time to turn by 90 degree is given as

t = \frac{\theta}{\omega}

t = \frac{\pi/2}{740} = 6.6 \times 10^{-4} s

Now the angular acceleration is given as

\alpha = \frac{\omega_f - \omega_i}{t}

\alpha = \frac{240\pi - 0}{4}

\alpha = 188.5 rad/s^2

5 0
4 years ago
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