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
Effectus [21]
3 years ago
12

How is the frequency of sound measured? answer asap!!

Physics
1 answer:
VladimirAG [237]3 years ago
3 0

Answer: hertz (Hz) i think :)

You might be interested in
A slab of insulating material has thickness 2d and is oriented so that its faces are parallel to the yz-plane and given by the p
Anika [276]

Answer:

Electric field at (x, y, z):  E=\frac{\rho x}{\epsilon_o}

Explanation:

(a) The slab is of an insulating material and has a uniform charge distribution. We can visualize this as infinite number of point charges, distributed throughout the slab, equally spaced apart. So if we (hypothetically) start to calculate the electric field due to each charge at x = 0, we shall always find a charge at a mirrored position about the x = 0 plane (within x = -d and x = d) and hence will cancel out the electric field.

A simpler example would be an infinitely long wire of uniform charge distribution. Any point on the wire will have zero electric field has there are essentially equal number of charges on either side (the length of the wire being infinitely long)

(b) Let us take a cylinder as a Gaussian surface with base area A. We shall take advantage of the symmetry about x = 0 and shall position the cylinder perpendicular to the y-z plane with x = 0 being the mid-point. Now the electric flux will only flow out through the 2 bases of the cylinder. This is because the slab has infinite dimensions along y and z-axes (think of an infinite <em>sheet </em>of charge) and the electric field always starts out perpendicular to any surface of charges.  If the Electric field at some point on the base of the cylinder be E, then total outgoing flux = 2EA

\rho is the charge density, hence,  Q_{enclosed}=\rho\times volume=2\rho Al

where 2l is the length of the cylinder and l is the x-coordinate.

Therefore, using Gauss's law,

2EA=\frac{2\rho Al}{\epsilon_o}

or, E=\frac{\rho l}{\epsilon_o}

or, E=\frac{\rho x}{\epsilon_o}

where, \epsilon_o = permittivity of free space.

7 0
3 years ago
A basketball is resting on the ground.
kakasveta [241]

Answer:

b

Explanation:

there is no net force on the basketball

8 0
2 years ago
(a) Calculate the self-inductance of a 42.2 cm long, 10.0 cm diameter solenoid having 1000 loops. (b) How fast can it be turned
kaheart [24]

Answer:

self-inductance is 23.4 mH

0.145 seconds it be turned off

Explanation:

given data

length L = 42.2 cm

diameter d = 10 cm

no of loop N = 1000 loops

induced emf = 3 V

current I = 18.6 A

to find out

self-inductance and How fast it turned off emf

solution

we apply here formula of self-inductance that is

self-inductance = u×N²×A / L      .......................1

put here value

self-inductance = 4π×1000²×(π×r² / 0.422)

self-inductance = 4π×1000²×(π×0.05² / 0.422)

self-inductance = 0.0234 H

so self-inductance is 23.4 mH

and

we know emf = Ldi /dt

so time = 0.0234 × 18.6

time = 0.145 seconds

6 0
3 years ago
You are travelling at 60.0 mph on the Grand Central Parkway near exit 10 where it is (nearly) parallel to the Long Island Expres
Romashka-Z-Leto [24]

Answer:

a)Vr= 5 mph

b)Vr= 115 mph

Explanation:

Lets

your velocity ,u= 60 mph

velocity of truck ,v= 55 mph

When object are moving in opposite direction the relative velocity  = u +v When object are moving in opposite direction the relative velocity  = u - v

a)

Truck is moving in the same direction ,so the  relative velocity

Vr= = u - v

Vr= 60 - 55

Vr= 5 mph

b)

Truck is moving in the opposite direction ,so the  relative velocity

Vr= = u+v

Vr= 60 + 55

Vr= 115 mph

4 0
2 years ago
The _____ of a mechanical wave is a direct measure of its energy.
Wittaler [7]

Answer: Amplitude

Explanation:

8 0
3 years ago
Other questions:
  • A 24-cm-diameter vertical cylinder is sealed at the top by a frictionless 15 kg piston. The piston is 90 cm above the bottom whe
    5·1 answer
  • The spring is now compressed so that the unconstrained end moves from x=0 to x=L. Using the work integral W=∫xfxiF⃗ (x⃗ )⋅dx⃗ ,
    6·1 answer
  • 20 PTS BRAINLIEST If Thomson's model of the atom was correct, what would Rutherford have seen in his experiments?
    6·2 answers
  • What is steam engine it's action and reaction​
    14·1 answer
  • A ball player catches a ball 3.13 s after throwing it vertically upward. a)With what speed did he throw it?
    6·1 answer
  • A tube is open only at one end. A certain harmonic produced by the tube has a frequency of 571 Hz. The next higher harmonic has
    10·1 answer
  • A force that comes from the action of earth's Gravity is called
    6·2 answers
  • The Thomson model of a hydrogen atom is a sphere of positive charge with an electron (a point charge) at its center. The total p
    9·1 answer
  • Identical particles are placed at the 50-cm and 80-cm marks on a meter stick of negligible mass. This rigid body is then mounted
    11·1 answer
  • Compared to wave A, wave B has a _____. (1 point) longer wavelength and lower frequency longer wavelength and lower frequency lo
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!