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
Nina [5.8K]
3 years ago
6

HELP ME PLEASE I NEED IT NOW

Physics
1 answer:
tia_tia [17]3 years ago
8 0

Answer:

the angle of incident is 40°

Explanation:

NQ is the normal to the mirror, therefore

angle NQA =90°

PQA = 50°

incident angle = NQA - PQA

90°- 50° = 40°

note that the angle of reflection is equal to the angle of incident

You might be interested in
What is used to block the UV light during screen development process to create a stencil in the emulsion
coldgirl [10]

Answer:

Invisible UV energy reacts with emulsion sensitizer and hardens the stencil so it won't dissolve with water and rinse down the drain

Explanation:

4 0
2 years ago
a backpack has a mass of 8 kg. it is lifted and given 54.9 J of gravitational potential energy. how high is is lifted? accelerat
dalvyx [7]
P=mgh
h=P/mg
h=(54.9)/(8*9.8)= 0.7m
8 0
3 years ago
Some help me on this please
satela [25.4K]

Answer:

Changes in the object's momentum (answer D)

Explanation:

A net force will cause an object to change its velocity, and that will affect the object's momentum, which is defined by the product of the object's mass times its velocity.

So, select the last option (D) in the given list.

8 0
3 years ago
If the speed of sound in air is 343 m/s and the wavelength of this note is 2.62 m, what is the frequency of this C3 note? (Round
snow_lady [41]

Answer:

<em>The frequency of of the note = 131 Hz.</em>

Explanation:

<em>Frequency:</em><em> Frequency can be defined as the number of complete oscillation completed by a wave in one seconds. The S.I unit of frequency is Hertz ( Hz)</em>

v = λf ............................ Equation 1

Making f the subject of the equation,

f = v/λ .......................... Equation 2

Where v = Speed, λ = wavelength, f = frequency

<em>Given: v = 343 m/s, λ = 2.62 m.</em>

<em>Substituting these values into equation 2</em>

<em>f = 343/2.62</em>

<em>f = 131 Hz</em>

<em>Thus the frequency of of the note = 131 Hz.</em>

8 0
3 years ago
Do yhu kno the answer?​
Charra [1.4K]

Answer:

cjkdodhfodjshdijcjsnchisbdhdosjdhsijsjf

5 0
3 years ago
Read 2 more answers
Other questions:
  • What pressure in units of torr is equal to 1.14 atm of pressure?
    15·1 answer
  • An _____ contains in maximum number of hydrogen atoms possible
    10·1 answer
  • If one light bulb burns out in a string of lights, and the rest stay lit, it is reasonable to assume that the lights are wired i
    9·1 answer
  • A train travels 65 kilometers in 5 hours, and then 61 kilometers in 4 hours. What is its average speed? _______km/hr
    5·2 answers
  • Tectonic plates are pieces of the ________ that float on the more fluid ________ below.
    13·1 answer
  • Physics please help !!
    5·1 answer
  • Eroded debris that is dropped at the glaciers farthest extent when ice melts at the front of the glacier as seen in the image is
    13·1 answer
  • What empirical evidence has led us to believe in the theory of plate tectonics?
    10·2 answers
  • Essential Question: Where does energy come from and where does it go? How is energy transferred and converted?
    5·1 answer
  • As of 2022, what is the total population of the planet?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!