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
soldi70 [24.7K]
3 years ago
6

Two waves are traveling in the same direction along a stretched string. The waves are 45.0° out of phase. Each wave has an ampli

tude of 7.00 cm. Find the amplitude of the resultant wave.
Physics
1 answer:
horsena [70]3 years ago
5 0

Answer:

The amplitude of the resultant wave is 12.93 cm.

Explanation:

The amplitude of resultant of two waves, y₁ and y₂, is given as;

Y = y₁ + y₂

Let y₁ = A sin(kx - ωt)

Since the wave is out phase by φ, y₂ is given as;

y₂ = A sin(kx - ωt + φ)

Y = y₁ + y₂ = 2A Cos (φ / 2)sin(kx - ωt + φ/2 )

Given;

phase difference, φ = 45°

Amplitude, A = 7.00 cm

Y = 2(7) Cos (45 /2) sin(kx - ωt + 22.5° )

Y = 12.93 cm

Therefore, the amplitude of the resultant wave is 12.93 cm.

You might be interested in
A person tosses a ball from the ground up into the air at an initial speed of 10 m/sec and an initial angle of 43° off the groun
Artemon [7]
<h2>Component of the velocity of the ball in the horizontal direction just before the ball hits the ground = 7.31 m/s</h2>

Explanation:

In horizontal direction there is acceleration or deceleration for a ball tossed upward at an initial angle of 43° off the ground.

So the horizontal component of velocity always remains the same.

Horizontal component of velocity is the cosine component of velocity.

Initial velocity, u = 10 m/s

Angle, θ = 43°

Horizontal component of velocity = u cosθ

Horizontal component of velocity = 10 cos43

Horizontal component of velocity = 7.31 m/s

Since the horizontal velocity is unaffected, we have

     Component of the velocity of the ball in the horizontal direction just before the ball hits the ground = 7.31 m/s

5 0
4 years ago
Which of the following elements is most likely to form a covalent bond?
DENIUS [597]
A because it only has one electron in the outer shell.

7 0
4 years ago
Read 2 more answers
The disks you will be using in the lab have the following parameters. All disks are solid with outer radius R1 = 0 0632 m and in
Nesterboy [21]

Answer:

MT disc   I = 2,752 10-3 kg m²

MB disc   I = 2,726 10⁻³ kg m²

Explanation:

The moment of inertia given by the expression

        I = ∫ r² dm

for bodies with high symmetry it is tabulated

  for a hollow disk it is

        I = ½ M (R₁² + R₂²)

let's apply this equation to our case

disc MT = 1,357 kg

         I = ½ 1,357 (0.0079² + 0.0632²)

         I = 2,752 10-3 kg m²

disk MB = 1,344 kg

         I = ½ 1,344 (0.0079² + 0.0632²)

         I = 2,726 10⁻³ kg m²

4 0
3 years ago
Guys please help me on the rest of the numbers
wel

Answer:

C. 100

D.3

E. 33.3

Explanation:

C. Mechanical Advantage=Load / Effort

= 200N

--------

100N

Therefore,. = 100

D. I. Velocity Ratio= distance moved by the effort / distance moved by load

= 30cm/10cm

= 3

II. Efficiency= M.A / V.R

= 100/3

= 33.33

8 0
3 years ago
Which argument best explains the charge of an atomic nucleus?
VMariaS [17]

Answer:

An atomic nucleus is positively charged because it is composed of protons.

Explanation:

Protons are positively charged

Neutrons are neutral

Electrons are negatively charged  

8 0
4 years ago
Read 2 more answers
Other questions:
  • What force holds the earth-moon system together?
    5·2 answers
  • In a movie projector in your local cineplex, the frames of film go into the projector
    5·1 answer
  • Advantages of hubble law
    5·1 answer
  • Which description properly describes the plant structures involved in photosynthesis?
    6·2 answers
  • Point charges of 21.0 μC and 47.0 μC are placed 0.500 m apart. (a) At what point (in m) along the line connecting them is the el
    7·2 answers
  • A spherical bowling ball with mass m = 4.1 kg and radius R = 0.117 m is thrown down the lane with an initial speed of v = 8.9 m/
    11·1 answer
  • Which change will always result in an increase in the gravitational force between two objects?
    8·1 answer
  • If the mass of an object is 10 Kg and it experiences a Net force of 60 Newtons. What is the acceleration?
    7·1 answer
  • I need help on this question
    12·2 answers
  • A force is used to lift mass to a height of 8 m does 1040 J of work. How much force is used?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!