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3 years ago

9

A roller coaster track is 3,000 meters long.It takes 100 seconds to travel once around the roller coaster.Is the velocity consta

nt throughout the trip?Explain.

1 answer:

Ira Lisetskai [31]3 years ago

7 0

No.

Roller coasters are never at a constant velocity.

If you remove the stop and start time of the roller coaster the dips increase velocity and the hills decease it.

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When air is blown across the top of an open

Tanzania [10]

When air is blown across the top of an open <span>water bottle, air molecules in the bottle vibrate at a particular frequency and sound is produced in a process called "refraction".
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4 years ago

When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition?

FromTheMoon [43]

Those are all "acceleration", caused by
unbalanced forces acting on the object.

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3 years ago

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Water waves, earthquake waves, sound waves, and the waves that travel down a rope or spring are all examples of what waves.

Margaret [11]

Compression waves :-)

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3 years ago

Please I need help........

LenKa [72]

Answer:

7.46 J/kg/K

Explanation:

The heat absorbed or lost is:

q = mCΔT

where m is the mass, C is the heat capacity, and ΔT is the change in temperature.

Given q = 15.0 J, m = 0.201 kg, and ΔT = 10.0 °C:

15.0 J = (0.201 kg) C (10.0 °C)

C = 7.46 J/kg/°C

Which is the same as 7.46 J/kg/K.

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3 years ago

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An instructor gives a demonstration in which he makes a standing wave on a long thin slinky. The slinky is 6.0 meters long. If y

Naily [24]

The characteristics of standing waves allows to find the result for the speed of the wave is:

The speed wave is: v = 10 m / s

The wave is a way of transmitting energy without mass displacement, , in the attachment we can see a diagram of the standing wave.

Each cycle corresponds to half a wavelength, they indicate that the frequency is 2.50 Hz and there are three cycles, so the wavelength is:

L = $n \frac{\lambda}{2}$

λ = 2L/n

λ = 2 6 /3

λ = 4 m

Wave speed is related to wavelength and frequency

v = λ f

v = 4 2.5

v = 10 m / s

In conclusion, using the characteristics of standing waves we can find the result for the speed of the wave is:

The wave speed is: v = 10 m / s

Learn more here: brainly.com/question/12536719

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3 years ago