PHYSICS HIGH SCHOOL

Why do sound waves move faster through the ground than through the air?Particles of matter are packed more loosely in the ground than in the air.

Particles of matter are packed more tightly in the ground than in the air.

Air doesn’t contain any particles of matter to transmit sound waves.

The elevation of the ground is lower than the elevation of the air space.

Answers

Answer 1

Answer:

Answer:

Particles of matter are packed more tightly in the ground than in the air.

Explanation:

As we know that velocity of sound in a given medium is given by formula

$v = \sqrt{(E)/(\rho)}$

here we know that

E = elasticity of the medium

$\rho$ = density of the medium

now we know that if we increase the density of medium then particles of matter are packed more which will decrease the speed of wave.

while is particles are tightly packed then it will increase the elasticity of the medium

So here if all particles are tightly bounded with each other then sound waves will move faster through the medium

Answer 2

Answer: Particles of matter are packed more tightly in the ground than the air

Related Questions

A system uses 2,380 J of energy to do work as 12,900 J of heat are added to the system. What is the change in internal energy of the system?
A relationship can be damaged by?
Suppose you have two magnets. Magnet A doesn't have its poles labeled, but Magnet B does have a clearly labeled north and south pole. If these two are brought into contact with one another, which of the following could you expect? A. The side of Magnet A that's attracted to Magnet B's north pole must be Magnet A's north pole. B. The side of Magnet A that's repelled by Magnet B's south pole must be Magnet A's north pole. C. The side of Magnet A that's attracted to Magnet B's south pole must be Magnet A's north pole. D. The side of Magnet A that's repelled by Magnet B's north pole must be Magnet A's south pole
Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.b. Explain why the two recordings would sound different after being replayed 100 times.
Where do most pollutants enter the body through?

A resistor is connected in series with an AC source that provides a sinusoidal voltage of v of t is equal to V times cosine of begin quantity omega times t end quantity, where V is the maximum voltage, omega is the angular frequency, and t is the time. The current supplied by this source that flows through this resistor is described with the function i of t is equal to I times cosine of begin quantity omega times t end quantity, where I is the maximum current. What is the average power supplied by this AC source?

Answers

Answer:

In circuits, the average power is defined as the average of the instantaneous power over one period. The instantaneous power can be found as:

$p(t)=v(t)i(t)$

So the average power is:

$P=(1)/(T)\intop_(0)^(T)p(t)dt$

But:

$v(t)=v_(m)cos(\omega t) \n \n i(t)=i_(m)cos(\omega t)$

So:

$P=(1)/(T)\intop_(0)^(T)v_(m)cos(\omega t)i_(m)cos(\omega t)dt \n \n P=(v_(m)i_(m))/(T)\intop_(0)^(T)cos^(2)(\omega t)dt \n \n But: cos^(2)(\omega t)=(1+cos(2\omega t))/(2)$

$P=(v_(m)i_(m))/(T)\intop_(0)^(T)((1+cos(2\omega t))/(2) )dt \n\nP=(v_(m)i_(m))/(T)\intop_(0)^(T)[(1)/(2)+(cos(2\omega t))/(2)]dt \n\nP=(v_(m)i_(m))/(T)[(1)/(2)(t)\right|_0^T +(sin(2\omega t))/(4\omega) \right|_0^T] \n \n P=(v_(m)i_(m))/(2T)[(t)\right|_0^T +(sin(2\omega t))/(2\omega) \right|_0^T] \n \n P=(v_(m)i_(m))/(2)$

In terms of RMS values:

$V_(RMS)=V=(v_(m))/(√(2)) \n \n I_(RMS)=I=(i_(m))/(√(2)) \n \n Then: \n \n P=VI$

The mass of a lamb that weighs 110 n is about a. 1 kg.
b. 11 kg.
c. 110 kg.
d. 1100 kg.
e. none of the above

Answers

A lamb that weighs 110 N has a mass of around 11 kg. Hence, option B is correct except B all options are incorrect.

What are Mass and Weight?

The mass of a physical body is a measure of its entire makeup. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of a body's gravitational pull on other bodies is also influenced by its mass. The kilogram is the fundamental mass unit of the SI.

In physics and engineering, the weight of an object refers to the gravitational force that pulls on it. Weight is the term used in many widely used textbooks to describe the gravitational force acting on the object. Some people think of weight as a scalar quantity that gauges the gravitational force's strength.

According to the question, the given values are :

Weight, w = 110 N and,

Taking value of g = 10 m/s²

As we know that :

w = m × g

110 = m (10)

m = 11 kg

Hence, the mass of the lamb will be 11 kg.

To get more information about Mass and weight :

brainly.com/question/28122305

#SPJ5

g = 10 m/s²
w = 110 N

w = m x g
110 = m x 10
110 = 10 m
m = 110/10 = 11 kg

An electric wire in the wall of a building carries a dc current of 25 a vertically upward. what is the magnetic field due to this current at a point 10 cm due northof the wire

Answers

Answer:

5.0 x 10-5 T

Explanation:

A force is applied to a block, causing it to accelerate along a horizontal, frictionless surface. The kinetic energy gained by the block is equal to which of the following

Answers

Answer:

The work done to the block

See

Workdone is Force×Displacement .

Also work done is total mechanical energy of body

As potential energy is 0

Mechanical energy=Kinetic energy

So option C is correct

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit?a) centimeter (used to measure distance)

b) gram (used to measure mass)

c) cubic centimeter (used to measure volume)

Answers

Answer:

Option (c)

Explanation:

The combination of two or more fundamental units is called derived unit. For example, cubic metre, newton per metre, metre per second.

Thus, cubic centimetre is a derived unit.

C)Cubic centimeter is derived unit here;

1 C is the total charge associated with 6.242 x 10¹⁸ electrons. How many electrons will pass through the cross section of a conductor if 50 μA of current flows for 5 s?

Answers

Answer:

Q = I t = 5.00E-8 C/s * 5.0 s = 2.5E-7 C total charge due to 50 μC for 5 sec

6.242E18 electrons / C * 2.5E-7 C = 1.6E12 electrons

Other Questions

What is force of inertia?????????

State whether these questions are true or false.Q1) Distance formula is displacement/time T/F?Q2)velocity formula is = displacement/time T/F?

One form of energy changes to multiple other formsa. single transformationb. multiple transformation

Why does a moving object come to a stop on a frictional surface? a.The object’s kinetic energy is transformed into mainly heat energy. b.The object’s potential energy is transformed into mainly kinetic energy. c.The object loses all its energy in deformation. d.The object’s kinetic energy is transformed into mainly potential energy.