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Vinil7 [7]
3 years ago
7

7. MANSON'S FAVORITE SINGING GROUP WAS...

Physics
1 answer:
lukranit [14]3 years ago
6 0
The beach boys i think.. if not im sorry
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The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350000 rpm. These
alexdok [17]

Answer:

θ  = 6.3 *10³ revolutions

Explanation:

Angular acceleration of the drill

We apply the equations of circular motion uniformly accelerated

ωf= ω₀ + α*t  Formula (1)

Where:  

α : Angular acceleration (rad/s²)  

ω₀ : Initial angular speed ( rad/s)  

ωf : Final angular speed ( rad

t :  time interval (s)

Data

ω₀ = 0

ωf = 350000 rpm = 350000 rev/min

1 rev = 2π rad

1 min= 60 s

ωf = 350000 rev/min =350000*(2π rad/60 s)

ωf = 36651.9 rad/s

t = 2.2 s

We replace data in the formula (2) :

ωf= ω₀ + α*t

36651.9 = 0 + α* (2.2)

α = 36651.9 / (2.2)

α = 17000 rad/s²

Revolutions made by the drill

We apply the equations of circular motion uniformly accelerated

ωf²= ω₀ ²+ 2α*θ Formula (2)

Where:  

θ : Angle that the body has rotated in a given time interval (rad)

We replace data in the formula (2):  

(ωf)²= ω₀²+ 2α*θ

(36651.9)²= (0)²+ 2( 17000 )*θ

θ = (36651.9)²/ (34000 )

θ  = 39510.64 rad = 39510.64 rad* (1 rev/2πrad)

θ  = 6288.31 revolutions

θ  = 6.3 *10³ revolutions

3 0
3 years ago
Which sentence best explains a possible result of climate change on Earth? A. Cold regions will become less appealing to tourism
Alex17521 [72]

The sentence that best explains a possible result of climate change on Earth is : (B). Extreme heat, flooding, and drought will each increase crop yields.

<h3>Meaning of climate change</h3>

A climate can be defined as the weather pattern that is prolonged or long term in a geographical area

Climate change can now be said to be the change in the weather pattern that has been sustained in a particular geographic area for a long period of time

In conclusion, The sentence that best explains a possible result of climate change on Earth is : (B). Extreme heat, flooding, and drought will each increase crop yields.

Learn more about climate change: brainly.com/question/24793273

#SPJ1

3 0
2 years ago
What is the awnser to that question
Olegator [25]
The answers To your question is c
8 0
3 years ago
Read 2 more answers
Why must objects be cooled before their mass is determined on a sensitive balance?
zubka84 [21]
Objects should be cooled before their mass is determined on a sensitive balance because it could damage the balance. Also, because it would give you wrong reading of the mass. Hot objects would warm the air around it. A warm air would expand and would produce convection as it rises causing to give the object a mass that is less than the actual. Another reason would be it would cause instability in the readings, the mass would fluctuate every now and then due to the convection currents around the object. It is always recommended to weigh the masses of objects that are in room temperature.
5 0
3 years ago
Help I need a answer to this
natta225 [31]

Answer:

1700 Joules

Explanation:

Work=force x distance

Force = 170 kg

Distance= 10 Meters

170 x 10 = 1700 Joules of work

3 0
3 years ago
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