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arsen [322]
3 years ago
9

PLS HURRY AND ANSWER THIS IM GIVING 100 POINTS AND ILL MARK BRAINLIEST

Physics
1 answer:
dolphi86 [110]3 years ago
3 0

Infrasound versus Ultrasound: Infrasound is sound that is beneath the lower furthest reaches of human hearing, under 20 Hz, and ultrasound is over the maximum furthest reaches of human hearing, over 20,000 Hz. People use infrasound - this repeat run for checking seismic quakes and volcanoes, charting rock and oil improvements under the earth. Infrasound is depicted by an ability to get around blocks with little dispersing.

For example, a couple of animals, for instance, whales, elephants and giraffes pass on using infrasound over huge distances. Heavy slides, volcanoes, seismic quakes, ocean waves, water falls and meteors produce infrasonic waves. Indicative ultrasound, moreover called sonography or definite clinical sonography, is an imaging method that uses high-repeat sound waves to make pictures of designs inside your body. The photos can give significant information to diagnosing and treating a variety of infirmities and conditions.

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Even, in 1921, the Dodge Brothers built a boat named the SS Delphine and it had a whopping 3000 HP. So, how much horsepower woul
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Answer: I am getting a result around the 54,800 area, so I am selecting the 55,000 HP answer.

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What are tiny sacs at the end of the bronchioles filled with air called?
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Alveoli

The bronchioles end in tiny air sacs called alveoli, where oxygen is transferred from the inhaled air to the blood.

Hope this helps :)

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3 years ago
A scientist wants to learn about Earth's oceans. Which of the following
ahrayia [7]
Hydrosphere - all the waters on the earth’s surface.
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3 years ago
The wheel having a mass of 100 kg and a radius of gyration about the z axis of kz=300mm, rests on the smooth horizontal plane.a.
pickupchik [31]

Answer:

a) 20 rad/s

b) 6 m/s

Explanation:

b) Force acting on the wheel is 200 N

mass of the wheel is 100 kg

From Newton's second law of motion, F = m × a

Where F is the net force acting on the body

m is mass of the body

a is the acceleration of the body

By substituting the values we get, a = 2 m/s²

As acceleration is constant, we can use the below formula for calculating the final velocity of the object

v = u + a × t

Where v is the final velocity

u is the initial velocity

a is the acceleration

t is the time taken

u = 0 (∵ it starts from rest)

By substituting the values we get

v = 0 + 2 × 3 = 6 m/s

∴ Speed of center of mass after 3 seconds = 6 m/s

a) As the wheel rotates about z-axis, radius of gyration will be the radius of wheel

∴ Radius of the wheel = 300 mm

Torque acting on the wheel about axis of rotation = 300 mm × 200 N =

60 N·m

Torque = (Moment of inertia) × (angular acceleration)

Assuming that the mass of spokes of the wheel to be negligible,

Moment of inertia of the wheel about axis of rotation = 100 × 300² × 10^{-6} = 9 kg·m²

Then,

60 = 9 × (angular acceleration)

∴ angular acceleration ≈ 6·67 rad/s²

As angular acceleration of the wheel is constant, we can use the below formula for calculation of final angular speed

w_{f} = w_{i} + α × t

Where

w_{f} is the final angular velocity

w_{i} is the initial angular velocity

α is the angular acceleration

t is the time taken

w_{i} is 0 (∵ initially it starts from rest)

By substituting the values we get

w_{f} = 6·67 × 3 = 20 rad/s

∴ Angular velocity of the wheel after three seconds = 20 rad/s

3 0
3 years ago
_____ is a disorder that results from damage to the brain's motor centers, causing difficulty with motor control so that speech
anygoal [31]

Answer:

Cerebral palsy

Explanation:

Cerebral palsy - it is referred to that disorder which is related to damages that caused permanent disorder in the functioning of body parts.  it affects the proper functioning of muscles thus cause the coordination problem.

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3 years ago
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