1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anastasy [175]
2 years ago
5

Un espejo convexo y un cóncavo tienen la misma distancia radial igual a 5m. La separación entre espejos es de 3 veces la distanc

ia focal. Si un objeto de altura 1.75m que se encuentra entre estos dos espejos, se refleja en ambos, determine la relación de alturas entre las imágenes que se forman.
Physics
1 answer:
NARA [144]2 years ago
8 0

Answer:

La altura de la imagen producida por el espejo cóncavo es 5 veces la altura de la imagen producida por el espejo convexo

Explanation:

La ecuación de espejo para espejos cóncavos viene dada por la relación;

\dfrac{1}{f} = \dfrac{1}{d_o} + \dfrac{1}{d_i}

Para espejos convexos, tenemos;

-\dfrac{1}{f} = \dfrac{1}{d_o} - \dfrac{1}{d_i}

Dado que la separación de los dos espejos = 3 × f

La ubicación del objeto = Entre los espejos = f × 3/2

Altura del objeto = 1.75 m

Radio de curvatura de los espejos = 5 m.

Por lo tanto, f = 5/2 = 2.5 m.

Distancia del objeto = f × 3/2 = 3.75 m.

Para el espejo cóncavo, tenemos que la distancia de la imagen se puede encontrar de la siguiente manera;

\dfrac{1}{2.5} = \dfrac{1}{3.75} + \dfrac{1}{d_i}

Lo que da;

\dfrac{2}{5} = \dfrac{4}{15} + \dfrac{1}{d_i}

\dfrac{1}{d_i} = \dfrac{2}{5} - \dfrac{4}{15} = \dfrac{2}{15}

d_i = 15/2 = 7.5 m

Que es una imagen real

m = \dfrac{-d_i}{d_o}  = \dfrac{-7.5}{3.75} = -2

Por lo tanto, la imagen es real, invertida y es dos veces la altura del objeto.

La altura de la imagen, h_i = m × Altura del objeto = -2 = -3.5 m

Para el espejo convexo, tenemos que la distancia de la imagen se puede encontrar de la siguiente manera;

-\dfrac{1}{2.5} = \dfrac{1}{3.75} - \dfrac{1}{d_i}

Lo que da;

-\dfrac{2}{5} = \dfrac{4}{15} - \dfrac{1}{d_i}

-\dfrac{1}{d_i} = -\dfrac{2}{5} - \dfrac{4}{15} = -\dfrac{2}{3}

d_i = 3/2 = 1.5 m

Que es una imagen real

m = \dfrac{-d_i}{d_o}  = \dfrac{-1.5}{3.75} = -\dfrac{2}{5}

Por lo tanto, la imagen es real, invertida y es 2/5 veces la altura del objeto

La altura de la imagen, h_i = m × Altura del objeto= -2/5 × 1.75 = -0.7 m

Por lo tanto, cuando la altura de la imagen formada por el espejo cóncavo se divide por la altura de la imagen formada por el espejo convexo, tenemos;

\dfrac{h_{(i, concave)}}{h_{(i, convex)}} =\dfrac{-3.5}{-0.7} = 5

Por lo tanto, la altura de la imagen producida por el espejo cóncavo = 5 veces la altura de la imagen producida por el espejo convexo

You might be interested in
A 39.3 g glass thermometer reads 22.0oC before it
ratelena [41]

Answer:

44.85C

Explanation:

Let the specific heat of glass thermometer be 0.84 J/g°C

Let the specific heat of water be 4.186 j/g °C

Let the water density be 1kg/L

136 mL of water = 0.136L of water = 0.136 kg of water = 136 g of water

Since the change of temperature on the glass thermometer is 43.6 - 22 = 21.6 C. We can then calculate the heat energy absorbed to it:

E = m_gc_g \Delta T = 39.3 * 0.84 * 21.6 = 713.06 J

Assume no energy is lost to outside, by the law of energy conservation, this heat energy would come from water

E = m_wc_w(T - T_w) = 713.06

136*4.186(T - 43.6) = 713.06

T - 43.6 = \frac{713.06}{136*4.186} = 1.25

T = 1.25 + 43.6 = 44.85C

6 0
2 years ago
Decreasing the trains velocity will ______ the kinetic energy.<br><br> Decrease or Increase
alex41 [277]
Decreasing the trains velocity will DECREASE the kinetic energy
8 0
2 years ago
Do you attract the earth or the earth attract you ?Which one is attracting with a large force ?You or the earth​
Katen [24]
The earth

The earths mass is what generates the force to draw you in. The deeper you go, sorry the more above you the less the pull will be
6 0
2 years ago
Calculate the average value of an AC signal with a peak amplitude of 10V and a frequency of 10 kHz.
Solnce55 [7]

Answer:

V(average)=6.37 V

Explanation:

Given Data

Peak Voltage=10V

Frequency=10 kHZ

To Find

Average Voltage

Solution

For this first we need to find Voltage peak to peak

So

Voltage (peak to peak)= 2× voltage peak

Voltage (peak to peak)= 2×10

Voltage (peak to peak)= 20 V

Now from Voltage (peak to peak) formula we can find the Average Voltage

So

Voltage (peak to peak)=π×V(average)

V(average)=Voltage (peak to peak)/π

V(average)=20/3.14

V(average)=6.37 V

3 0
3 years ago
The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is_____
Bond [772]
When you are talking about calculating the kinetic energy of an object, the formula is as stated:

Ek =1/2mv²

Where m is mass and v is velocity. Sub all those numbers in and you'll get 25J of kinetic energy.
3 0
2 years ago
Other questions:
  • The gravitational force of a star on an orbiting planet 1 is f1. planet 2, which is three times as massive as planet 1 and orbit
    5·2 answers
  • A soccer ball takes 20s to roll 10 m. what is the speed of the soccer ball?
    11·1 answer
  • What is the minimal mass of helium (density 0.18 kg/m3) needed to lift a balloon carrying two people in a basket, if the total m
    15·1 answer
  • An object is allowed to fall freely near the surface of a planet. The object has an acceleration due to gravity of 24 m/s2. How
    14·1 answer
  • Does frequency of sound change with the temperature?
    11·1 answer
  • Descibe the real-world examples of Newton's third lawthat were idenified in "Applications of Newton's Laws."
    15·2 answers
  • PLEASE HELP ASAP PPLLEEAASSEE HALPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    15·2 answers
  • Studying neutrinos helped to explain how our Sun works but led to changes in theories of particle physics, how is this process c
    13·1 answer
  • The flow of electric current through a gas without any external influence (ionizer) is called
    11·1 answer
  • A 1300 kg steel beam is supported by two ropes. (Figure
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!