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
PilotLPTM [1.2K]
4 years ago
9

It proved my hypothesis because whenever the sound got closer to the observe it would increase and whenever it passes him it wou

ld decrease
Physics
1 answer:
LenKa [72]4 years ago
8 0
Imagine this, you hear an ambulance, The ambulance is about a mile off and it isn't very loud. As it gets closer it gets louder and louder when it passes you it gets loudest then it is very quiet. So yes, your hypothesis was correct.
You might be interested in
A TMS (transcranial magnetic stimulation) device creates very rapidly changing magnetic fields. The field near a typical pulsed-
GrogVix [38]

Explanation:

It is given that, the field near a typical pulsed-field machine rises from 0 T to 2.5 T in 200 μs

Change in magnetic field, dB=2.5\ T

Change in time, dt=200\ \mu s=200\times 10^{-6}\ s=2\times 10^{-4}\ s

Diameter, d = 2.3 cm

Radius, r = 0.0115 m

Emf is induced in the ring as the field changes. It is given by :

E=\dfrac{d\phi}{dt}

E=\dfrac{d(B.A\ cos(0))}{dt}

E=A\dfrac{d(B)}{dt}

E=\pi (0.0115)^2\dfrac{2.5}{2\times 10^{-4}}

E = 5.19 volts

So, the emf induced in the ring is 5.19 volts. Hence, this is the required solution.

5 0
4 years ago
Complete the following:
masha68 [24]

When light is incident parallel to the principal axis and then strikes a lens, the light will refract through the focal point on the opposite side of the lens.

To find the answer, we have to know about the rules followed by drawing ray-diagram.

<h3>What are the rules obeyed by light rays?</h3>
  • If the incident ray is parallel to the principal axis, the refracted ray will pass through the opposite side's focus.
  • The refracted ray becomes parallel to the major axis if the incident ray passes through the focus.
  • The refracted ray follows the same path if the incident light passes through the center of the curve.

Thus, we can conclude that, when light is incident parallel to the principal axis and then strikes a lens, the light will refract through the focal point on the opposite side of the lens.

Learn more about refraction by a lens here:

brainly.com/question/13095658

#SPJ1

8 0
2 years ago
An image cannot be projected and forms where light rays appear to originate.
irakobra [83]

An VIRTUAL image cannot be projected, and

forms where light rays appear to originate.

3 0
3 years ago
A ball is launched straight up with initial speed of 30.0 m/s. What is the ball's velocity when it comes back to its original po
Zanzabum

Answer:

We could get the time taken by the ball to return back to earth, using the formula:

s = u t + ½ a t², where

s = displacement of the body moving with initial velocity u, acceleration 'a' in time t.

In the present case s=0 (as the ball returns back to starting time)

u= 30 m/s; a = -10 m/s² ( negative sign as a is in opposite direction to u); t=?

0 = 30 t - ½ ×10 ×t²; ==> 5 t = 30, t= 6 second.

So ball will return back after 6 second after being thrown up.

Explanation:

I looked it up

Hope this helps

3 0
3 years ago
A water wave has a frequency of 2 HZ and a wavelength of 5 meters what is its speed
Sliva [168]
Speed, v = fλ.

Where f is the frequency in Hertz, wavelength is in meters.

Speed, v = 2*5 = 10

Speed = 10 m/s. 
8 0
3 years ago
Other questions:
  • Can someone help me! Please
    15·2 answers
  • dayshawn is traveling at 12 m/s away from the school. dayshaun's mom is looking for him because he is late coming home so she le
    13·1 answer
  • If the frequency of sound wave is doubled, the wavelength:
    8·1 answer
  • Which change decreases the resistance ofva piece of copper wire?
    6·1 answer
  • who described atoms as having a positive nucleus with electrons that have different energies at different distances from the nuc
    10·1 answer
  • Compare the size of Earth with that of the Sun, the solar system, and a galaxy.
    10·2 answers
  • A diffraction grating produces a first-order maximum at an angle of 10 degree. What is the angle of the third order maximum?
    10·1 answer
  • The more energy matter has the faster its particles are moving.
    12·1 answer
  • ILL MARK BRAINLIEST
    9·1 answer
  • What would the person’s mass be on the earth? Part B pls
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!