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
MAVERICK [17]
2 years ago
9

Can someone plz answere my question for science

Physics
1 answer:
klio [65]2 years ago
5 0
Whats the question?
djdkkd
You might be interested in
2. The speed of light is 299,792,000m's. What is the speed in km's?​
Mandarinka [93]

Answer:

299 792 kilometers

Explanation:

4 0
3 years ago
A mouse jumps horizontally from a box of height 0.25m.  If the mouse jumps with a speed of 2.1 m/s, how far from the box does th
Sladkaya [172]

The mouse would land 0.47 m away from the box.

3 0
3 years ago
Read 2 more answers
One speaker generates sound waves with amplitude A.
raketka [301]

Answer:

iv) It is 9x bigger than before

Explanation:

As the amplitudes of the new speakers add directly with the original one, taking into account the phase that they have, the composed amplitude of the sound wave is as follows:

At = A + 4A -2A = 3 A

The intensity of the wave, assuming it propagates evenly in all directions, is constant at a given distance from the source, and can be expressed as follows:

I = P/A

where P= Power of the wave source, A= Area (for a point source, is equal to the surface area of a sphere of radius r, where is r is the distance to the source along a straight line)

For a sinusoidal wave, the power is proportional to the square of the amplitude, so the intensity is proportional to the square of the amplitude also.

If the amplitude changes increasing three times, the change in intensity will be proportional to the square of the change in amplitude, i.e., it will be 9 times bigger.

So, the statement iv) is the right one.

7 0
3 years ago
Name some of the mediums that sound can travel through
Brums [2.3K]

Answer:

gas, liquid, and solid

Explanation:

6 0
2 years ago
Read 2 more answers
A bat moving at 3.7 m/s is chasing a ying insect. The bat emits a 36 kHz chirp and receives back an echo at 36.79 kHz. At what s
3241004551 [841]

Answer:

The speed the bat is gaining on its prey is 0.03m/s

Explanation:

Given;

speed of the bat, v₀ = 3.7 m/s

frequency of the bat, F₀ = 36 kHz

frequency of the source, Fs = 36.79

This is relative motion between a source of the sound and the observer.  The phenomenon is known as Doppler effect.

Apply the following equation to determine the speed of the insect which is the source;

F_0 = F_s[\frac{v+v_0}{v-v_s} ]\\\\\frac{F_0}{F_s} = [\frac{v+v_0}{v-v_s} ]\\\\\frac{36.79}{36} = \frac{340+3.7}{340-v_s}\\\\1.0219 = \frac{343.7}{340-v_s}\\\\  340-v_s = \frac{343.7}{1.0219}\\\\340-v_s = 336.33\\\\v_s = 340-336.33\\\\v_s = 3.67 \ m/s

The speed the bat is gaining on its prey = 3.7m/s - 3.67m/s = 0.03 m/s

Therefore, the speed the bat is gaining on its prey is 0.03m/s

8 0
3 years ago
Other questions:
  • Shelly experiences a backward jolt when the driver starts the school bus. Which of the following explains this phenomenon? A. th
    11·2 answers
  • A horizontal power line carries a current of 7250 A from south to north. Earth's magnetic field (65.7 µT) is directed toward the
    13·1 answer
  • What is the formula for time? (something like speed *distance=time??)?
    12·1 answer
  • Imagine you derive the following expression by analyzing the physics of a particular system: a=gsinθ−μkgcosθ, where g=9.80meter/
    6·1 answer
  • What is the relationship between the frequency and the pitch of a sound?
    9·1 answer
  • suppose it takes 500 years to form 2 cm of new soil without erosion. Of a farmer need at least 35 cm of soil to plant a particul
    8·1 answer
  • The separation of white light into its component colors is
    11·1 answer
  • A perturbation in the temperature of a stream leaving a chemical reactor follows a decaying sinusoidal variation, according to t
    14·1 answer
  • A total of 1,033 J of work is needed to lift a body of unknown mass through a height of 64 m. What is its mass? Round your inter
    7·1 answer
  • A sled with a mass of 25.0 kg rests on a horizontal sheet of essentially frictionless ice. It is attached by a 5.00-m rope to a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!