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
vivado [14]
3 years ago
14

Two adjoining plane mirrors are separated by an angle of 100°. Light is incident on the first mirror at an angle of 70°. The lig

ht reflects toward the second mirror and is then reflected from it. At what angle is the light reflected from the second mirror?

Physics
2 answers:
Ludmilka [50]3 years ago
8 0

Answer:

The angle is the light reflected from the second mirror is 30°

Explanation:

Given that,

Angle between mirrors = 100°

Angle of incident = 70°

We know that,

The incident angle is equal to the reflected angle.

We need to calculate the angle BCA

According to figure,

In \Delta ABC,

\angle ABC+\angle BCA+\angle C=180

Put the value into the formula

20+100+\angle BCA=180

\angle BCA = 60

We need to calculate the angle is the light reflected from the second mirror

Using relation of incident and reflection

i+\angle BCA=90

i=90-60=30^{\circ}

We know that, i = r

So, i=r=30°

Hence, The angle is the light reflected from the second mirror is 30°

vladimir1956 [14]3 years ago
4 0

Answer:

The angle is the light reflected from the second mirror is 30°

Explanation:

Given that,

Angle between mirrors = 100°

Angle of incident = 70°

We know that,

The incident angle is equal to the reflected angle.

We need to calculate the angle BCA

According to figure,

In ,

Put the value into the formula

We need to calculate the angle is the light reflected from the second mirror

Using relation of incident and reflection

We know that, i = r

So, i=r=30°

Hence, The angle is the light reflected from the second mirror is 30°

Read more on Brainly.com - brainly.com/question/13152660#readmore

You might be interested in
If this atom has a balanced charge, how many protons would you expect to find in this atom
guapka [62]
Then, number of protons would be equal to number of electrons.
8 0
3 years ago
Read 2 more answers
which of these is not a physical property of matter? select one: a. flammability b. color c. hardness d. density
netineya [11]
I believe the answer your looking for is A. Flammability. Because flammability is a chemical property, not a physical one. Hope this helps :)
6 0
3 years ago
According to Ohm’s law, determine the experimental current for these values in Table A.
mojhsa [17]

Answer:

0.25

1.0

2.5

Explanation:

7 0
3 years ago
A rocket in deep space has an empty mass of 150 kg and exhausts the hot gases of burned fuel at 2500 m/s. It is loaded with 600
3241004551 [841]

Answer:

v(10\,s) \approx 775.387\,\frac{m}{s}

v(20\,s)\approx 1905.350\,\frac{m}{s}

v(30\,s) \approx 4023.595\,\frac{m}{s}

Explanation:

The speed of the rocket is given the Tsiolkovsky's differential equation, whose solution is:

v (t) = v_{o} - v_{ex}\cdot \ln \frac{m}{m_{o}}

Where:

v_{o} - Initial speed of the rocket, in m/s.

v_{ex} - Exhaust gas speed, in m/s.

m_{o} - Initial total mass of the rocket, in kg.

m - Current total mass of the rocket, in kg.

Let assume that fuel is burned linearly. So that,

m(t) = m_{o} + r\cdot t

The initial total mass of the rocket is:

m_{o} = 750\,kg

The fuel consumption rate is:

r = -\frac{600\,kg}{30\,s}

r = -20\,\frac{kg}{s}

The function for the current total mass of the rocket is:

m(t) = 750\,kg - (20\,\frac{kg}{s} )\cdot t

The speed function of the rocket is:

v(t) = - 2500\,\frac{m}{s}\cdot \ln \frac{750\,kg -(20\,\frac{kg}{s} )\cdot t}{750\,kg}

The speed of the rocket at given instants are:

v(10\,s) \approx 775.387\,\frac{m}{s}

v(20\,s)\approx 1905.350\,\frac{m}{s}

v(30\,s) \approx 4023.595\,\frac{m}{s}

7 0
3 years ago
A drag racer starts from rest and accelerates at 10 m/s squared for the
nika2105 [10]

Answer:

54 \frac{m}{s}

Explanation:

v=u+at

where u=initial velocity

v=0+(10\frac{m}{s^{2} } )×(5.4s)

v=54\frac{m}{s}

6 0
3 years ago
Other questions:
  • Use this free body diagram to help you find the magnitude of the force F2 needed to keep this block in static equilibrium. WILL
    14·1 answer
  • A DVD drive is spinning at 100.0 rpm. A dime (2.00 gm) is placed 3.00 cm from the center of the DVD. What must the coefficient o
    5·1 answer
  • If the amount of gas in a sealed container increases, what happens to the pressure in the container
    10·2 answers
  • As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. If the frequency of this light wave is 1.1 x
    9·1 answer
  • Altitude is the angle measured above ____.<br><br> North Pole<br> horizon<br> equator<br> zenith
    15·2 answers
  • How does the currently accepted model of the nucleus provide evidence of the existence of the strong nuclear force?
    10·1 answer
  • Suppose there is a large amount of (weakly interacting) dark matter between us and a distant galaxy. How will this affect our vi
    14·1 answer
  • Two balloons (m = 0.021 kg) are separated by a distance of d = 16 m. They are released from rest and observed to have an instant
    13·1 answer
  • Does static electricity attract dead skin cells
    15·1 answer
  • Which part of the eye is used to see things in high detail?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!