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Annette [7]
2 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]2 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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1. When an object's distance from another object is changing it must be
slega [8]
An object is in motion if its distance from another object is changing. An object is in motion if it changes position relative to a reference point. An reference point is a place or object used for comparison to determine if something is moving.
3 0
3 years ago
Ramesh announced in class: ''Yesterday I had fever and my body temperature was 100 degrees.'' Ravi said: ''We learnt in the last
pogonyaev

Answer:

D. Ramesh and Ravi are correct, but they are using different measurement scales.

\Huge{\underline{\textrm{Explanation}}}Explanation

Here, Ravi says that his body temperature is 100 degrees, but does not mention that whether it is 100 degrees Celsius or 100 degrees Fahrenheit. When the temperature of a human body is more than 100.4 degree Fahrenheit (38°C), or near to it, the person is considered to have fever.

The boiling point of water is 100 degrees Celsius and not 100 degrees Fahrenheit.

Thus, they both are using different measurement scales.

7 0
2 years ago
Two charges, Q1 and Q2, are separated by 6·cm. The repulsive force between them is 25·N. In each case below, find the force betw
Misha Larkins [42]

Answer:

a) 5 N b) 225 N c) 5 N

Explanation:

a) Per Coulomb's Law the repulsive force between 2 equal sign charges, is directly proportional to the product of the charges, and inversely proportional to the square of  the distance between them, acting along  the  line that joins the charges, as follows:

F₁₂ = K Q₁ Q₂ / r₁₂²

So, if we make Q1 = Q1/5, the net effect will be to reduce the force in the same factor, i.e. F₁₂ = 25 N / 5 = 5 N

b) If we reduce the distance, from r, to r/3, as the  factor is squared, the net effect will be to increase the force in a factor equal to 3² = 9.

So, we will have F₁₂ = 9. 25 N = 225 N

c) If we make Q2 = 5Q2, the force would be increased 5 times, but if at the same , we increase the distance 5 times, as the factor is squared, the net factor will be 5/25 = 1/5, so we will have:

F₁₂ = 25 N .1/5 = 5 N

3 0
3 years ago
A fire hose held near the ground shoots water at a speed of 6.5 m/s. At what angle(s) should the nozzle point in order that the
valina [46]
The speed of water can be split into vertical and horizontal speed components:
v_x = 6.5 cos \theta \\ v_y = 6.5 sin \theta

Due to the force of gravity, the y component will be parabolic. The x component will be linear:
y(t) = -4.9t^2 + (6.5sin \theta) t \\  \\ x(t) = (6.5 cos \theta) t
To find when the water hits the ground 2.5m away, set y= 0 and x = 2.5
-4.9t^2 + (6.5sin \theta) t=0 \\  \\ t = \frac{6.5}{4.9} sin \theta \\ \\(6.5 cos \theta)(\frac{6.5}{4.9} sin \theta) = 2.5 \\  \\ sin \theta cos \theta = 0.29 \\  \\ sin 2\theta = 0.58 \\  \\ 2\theta = 35.4, 144.6 \\  \\ \theta = 17.7,72.3
8 0
3 years ago
In an economy, the demand for labor is given by the equation W = 15 - (1/200) L and the supply of labor is given by the equation
mr_godi [17]

Answer:

the equilibrium wage rate is 10  and the equilibrium quantity of labor is 1000 workers

Explanation:

The equilibrium wage rate and the equilibrium quantity of labor are found as the point where the equation of demand intercepts the equation of supply, so the equilibrium quantity of labor is:

W_{Demand} = W_{Supply}

15 - (1/200) L = 5 + (1/200) L

15 - 5 =  (1/200) L +  (1/200) L

10 = (2/200) L

(10*200)/2 = L

1000 = L

Then, the equilibrium wage rate is calculated using either the equation of demand for labor or the equation of supply of labor. If we use the equation of demand for labor, we get:

W = 15 - (1/200) L

W = 15 - (1/200) 1000

W = 10

Finally, the equilibrium wage rate is 10 and the equilibrium quantity of labor is 1000 workers

7 0
3 years ago
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