1d. Conservation of energy is demonstrated in this roller coaster example.

Physics

1 answer:

Dvinal [7]3 years ago

6 0

Answer:

can you clear your question I can't understand

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Compared to water, ice has a lower ____ , which allows it to float

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3 years ago

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A 52 kg child on a swing is travelling at 6 m/s . What is his gravitational potential energy if he has 1000 J of the mechanical

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Answer:

The correct answer is "64 J".

Explanation:

The given values are:

Mass,

m = 52 kg

Velocity,

v = 6 m/s

Mechanical energy,

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Now,

The gravitational potential energy will be:

⇒ $P.E=1000-\frac{1}{2}mv^2$

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3 years ago

In a shuffleboard game, the puck slides a total of 12 m on a horizontal surface before coming to rest. if the coefficient of kin

ivanzaharov [21]

Given that,

Puck slide total Deltax = 12m

Puck and board Mk = 0.10

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We know that,

Vf^2-Vi^2 = 2a Deltax

-Vi^2 = -2MkgDeltax ............(1)

then,

fk = -Mk mg = ma

a = -Mkg .........(2)

From equation (1),

Vi^2 = 2MkgDeltax

Vi = âš2MkgDeltax [g=9.8m/s^2]

Vi = âš2(0.10)(0.98)(12)

Vi = âš0.2(9.8)(12)

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3 years ago

During the time a compact disc (CD) accelerates from rest to a constant rotational speed of 477 rev/min, it rotates through an a

atroni [7]

Answer:

126.01 rad/s^2

Explanation:

since it starts from rest, initial angular speed ω' = 0 rad/s

angular speed N = 477 rev/min

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