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Annette [7]
3 years ago
6

You and I see, hear, and think with ___________________________. Waves carry _____________________. The wave in the speaker, on

the screen, in the air, and in the string are all ________________________ forms of the same energy. They are all waves. Low frequency waves are _________________________ apart. The faster you vibrate the spring, the _______________ the wavelength will be. Energy travels through the wave out in _________________ directions. All waves have a similar _______________________. ___________________ of electromagnetic waves are light , x-rays, microwaves, radar, radio and television signals. ______________________ have so much energy that they can go through your skin and muscle until they hit your bone. Earthquakes can _______________________ in waves. Earthquake waves are called ______________________ waves. Sonar uses sound waves to find things ________________.
Physics
1 answer:
kondaur [170]3 years ago
7 0

Answer:

eyes heard and brain.,  Energy, different   ___ forms of the same energy,

less  ___ the wavelength

Explanation:

In this exercise you are asked to complete the sentences.

You and I see, hear, and think with    eyes heard and brain.

Waves carry Energy _______.

The wave in the speaker, on the screen, in the air, and in the string are all _

different   ___ forms of the same energy.

They are all waves. Low frequency waves are __

amount of energy ____________ apart.

The faster you vibrate the spring, the __less  ___ the wavelength will be. Energy travels through the wave out in ___all________ directions.

All waves have a similar ___form and equation  ____ of electromagnetic waves are light , x-rays, microwaves, radar, radio and television signals. ___X-Ray and gamma______ have so much energy that they can go through your skin and muscle until they hit your bone.

Earthquakes can _ produce longitudinal and transverse _______ in waves. Earthquake waves are called __P and S _______ waves.

Sonar uses sound waves to find things _object by sound reflection____.

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You are designing a rotating metal flywheel that will be used to store energy. The flywheel is to be a uniform disk with radius
Gennadij [26K]

Answer:

t = 0.0735 m

Explanation:

Angular acceleration of the flywheel is given as

\alpha = 3 rad/s^2

now after t = 8 s the speed of the flywheel is given as

\omega = \alpha t

\omega = 3 \times 8

\omega = 24 rad/s

now rotational kinetic energy of the wheel is given as

K = \frac{1}{2}I\omega^2

K = \frac{1}{2}(\frac{1}{2}mR^2)(24^2)

800 = \frac{1}{4}m(0.23)^2(24^2)

m = 105 kg

now we have

m = \rho (\pi R^2) t

105 = 8600(\pi \times 0.23^2) t

t = 0.0735 m

4 0
3 years ago
Scientists can help us understand the impact of human activities on the environment. True or false?
zhannawk [14.2K]

Answer:

True

Explanation:

hope it will help you

5 0
2 years ago
Please help i would really appreciate it
Verdich [7]

Answer:

THE MINIONSSSSSSS AYEEEEE

Explanation:

4 0
3 years ago
Read 2 more answers
The normal force acting on an object and the force of static friction do zero work on the object. However the reason that the wo
spin [16.1K]

Answer:

<em>The normal force is perpendicular to the displacement</em>

<em>The static friction force produces no displacement</em>

Explanation:

Work Done By Special Forces

The work is a physical magnitude that measures the dot product of the force applied to an object by the displacement it produces in it.

W=\vec F\ \vec r

It can be written in its scalar version as

W=F.d.cos\theta

Being F and d the magnitudes of the force and displacement, and \theta the angle between them

If the angle is zero, the work is at maximum, it the angle is 90°, the work is zero. If the angle is between 90° and 180°, the work is negative.

The normal force acts in the vertical direction when the object is being pushed horizontally. It means the angle between the force and the displacement is 90°, thus the work is

W=N.d.cos90^o=0

The work is zero because the force and the displacement are perpendicular

The static friction force exists only when the object is being applied a force of a magnitude not large enough to produce movement, i.e. the object is at rest. If the object is moved, the friction force is still present, but it's called dynamic friction force, usually smaller than the static.

Since in this case, there is no displacement, d=0, and the work is

W=F_r(0)cos180^o=0

3 0
4 years ago
A baseball pitcher throws a ball horizontally at a speed of 34.0 m/s. A catcher is 18.6 m away from the pitcher. Find the magnit
Sidana [21]

To develop this problem, it is necessary to apply the concepts related to the description of the movement through the kinematic trajectory equations, which include displacement, velocity and acceleration.

The trajectory equation from the motion kinematic equations is given by

y = \frac{1}{2} at^2+v_0t+y_0

Where,

a = acceleration

t = time

v_0 = Initial velocity

y_0 = initial position

In addition to this we know that speed, speed is the change of position in relation to time. So

v = \frac{x}{t}

x = Displacement

t = time

With the data we have we can find the time as well

v = \frac{x}{t}

t = \frac{x}{v}

t = \frac{18.6}{34}

t = 0.547s

With the equation of motion and considering that we have no initial position, that the initial velocity is also zero then and that the acceleration is gravity,

y = \frac{1}{2} at^2+v_0t+y_0

y = \frac{1}{2} gt^2+0+0

y = \frac{1}{2} gt^2

y = \frac{1}{2} 9.8*0.547^2

y = 1.46m

Therefore the vertical distance that the ball drops as it moves from the pitcher to the catcher is 1.46m.

6 0
3 years ago
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