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quester [9]
2 years ago
9

what is the output distance of a machine with an input distance of 3.0 centimeters and an ideal mechanical advantage of 12

Physics
1 answer:
Molodets [167]2 years ago
7 0

Answer:

0.25cm

Explanation:

Input distance/Output distance=12

3/output distance=12

output distance=3/12=1/4=0.25

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Which of the following depend upon the amount of matter in an object?
Finger [1]

The answer is c. The amount of matter in an object is the concentration of the atoms inside. This can also be called density. Weight depends on density because weight = \frac{mass}{volume}.

8 0
3 years ago
*photo attached* The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.67 m and 1.01 m, respectivel
stiks02 [169]

(a) The speeds of the tips of both rotors; main rotor <u>178.3 m/s</u> and  tail rotor <u>218.4 m/s</u>.

(b) The speed of the main rotor is <u>0.52</u> speed of sound, and the speed of the tail rotor is <u>0.64</u> speed of sound.

<h3>Linear speed of main motor and tail rotor</h3>

v = ωr

where;

  • ω is the angular speed (rad/s)
  • r is radius (m)

v(main rotor) = (444 rev/min x 2π rad x 1 min/60s) x (0.5 x 7.67 m)

v(main rotor) = 178.3 m/s

v(tail rotor) = (4,130 rev/min x 2π rad x 1 min/60s) x (0.5 x 1.01 m)

v(tail rotor) = 218.4 m/s

<h3>Speed of the rotors with respect to speed of sound</h3>

% speed (main motor) = 178.3/343 = 0.52 = 52 %

% speed (tail motor) = 218.4/343 = 0.64 = 64 %

Thus, the speed of the main rotor is 0.52 speed of sound, and the speed of the tail rotor is 0.64 speed of sound.

Learn more about linear speed here: brainly.com/question/15154527

#SPJ1

5 0
2 years ago
1. Why do only some people get addicted to<br> drugs?
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Answer: All drugs of abuse trigger a surge of dopamine

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4 0
3 years ago
Read 2 more answers
Question #1: The visible part of the EM spectrum ranges from about 390 nanometers to about 720 nanometers. A nanometer (nm) is 1
mojhsa [17]

Answer:

The blue light has the highest energy.      

Explanation:

Body that is hot enough emits light as consequence of its temperature. For example, an iron bar in contact with fire will start to change colors as the temperature increases until it gets to a blue color. That its know as Wien's displacement law, which establishes that the peak of emission for the spectrum will be displaced to shorter wavelengths as the temperature increases.

The same scenario described above can be found in the star, a star with higher temperature will have a blue color and one with lower temperature will have a red color.

T = \frac{2.898x10^{-3} m. K}{\lambda max}  (1)

The energy of each wavelength can be determined by means of the following equation:

E = h\nu (2)

but \nu = \frac{c}{\lambda}, therefore:

E = \frac{hc}{\lambda}  (3)

     

Where h is the planck's constant and \nu is the frequency.

Notice that it is necessary to express the frequency in units of meters for a better representation of the energy.

\nu_{blue} = 400nm . \frac{1x10^{-9}m}{1nm} ⇒ 4x10^{-7}m

\nu_{red} = 720nm . \frac{1x10^{-9}m}{1nm} ⇒ 7.2x10^{-7}m

           

Case for the bluest light:

E = \frac{(6.626x10^{-34}J.s)(3x10^{8}m/s)}{4x10^{-7}m}                                                      

E = 4.96x10^{-19}J                                

                             

Case for the reddest light:    

     

E = \frac{(6.626x10^{-34}J.s)(3x10^{8}m/s)}{7.2x10^{-7}m}                                                        

     

E = 2.76x10^{-19}J                

                           

Equation 3 show that if the wavelength is lower the energy will be greater (inversely proportional).

Hence, according with the result and what was explained above, the blue light has the highest energy.

7 0
3 years ago
Need today please
podryga [215]

Answer:

yeah righto the correct answer mate would be D) :)

5 0
3 years ago
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