What is the direction of transfer of energy in the waves produced?

Answers

Answer 1

Answer: Transverse waves occur when a disturbance causes oscillationsperpendicular (at right angles) to the propagation (the direction of energy transfer). Longitudinal waves occur when the oscillations are parallel to the direction of propagation.

Answer 2

Answer:

Transverse waves occur when a disturbance causes oscillations perpendicular

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Figure 1.18 (Chapter 1) shows the Hoover Dam Bridge overthe Colorado River at a height of 271 m. If a heavy object is
dropped from the bridge, how much time passes before the
object makes a splash?

Answers

Answer: 7.436 s

Explanation:

This situation is related to vertical motion, specifically free fall and can be modelled by the following equation:

$y=y_(o)+V_(o) t+(gt^(2))/(2)$

Where:

$y= 0m$ is the final height of the object (when it makes splash)

$y_(o)=271 m$ is the initial height of the object

$V_(o)=0 m/s$ is the initial velocity of the object (it was dropped)

$g=-9.8m/s^(2)$ is the acceleration due gravity (directed downwards)

$t$ is the time since the objecct is dropped until it makes splash

$0=y_(o)+0+(gt^(2))/(2)$

Clearing $t$ :

$t=\sqrt{(-2y_(o))/(g)}$

$t=\sqrt{(-2(271 m))/(-9.8m/s^(2))}$

Finally:

$t=7.436 s$

Which of the following is not an example of potential energy? chemical energy, gravitational energy, thermal energy, nuclear energy

Answers

Answer:

nuclear energy

Explanation:

An ohmmeter is a common device for measuring resistance. Using an ohmmeter, you find that a certain material has a very high resistance. This material is most likely what?conductor
insulator
semiconductor
superconductor

Answers

Answer:

An insulator

Explanation:

Insulators have a very high resistance because the electrons of the insulator are bounded strongly with the nucleus. Hence it requires more voltage to move an electron from the valence band to the conduction band.

The leg's force forward on the foot= 500NThe foot's force forward on the ball= 500N
The ball's force back on the foot= 500N
What is the net force on the ball?
What is the net force on the foot?

Answers

There's so much going on here, in a short period of time.

Before the kick, as the foot swings toward the ball . . .

-- The net force on the ball is zero. That's why it just lays there and
does not accelerate in any direction.

-- The net force on the foot is 500N, originating in the leg, causing it to
accelerate toward the ball.

During the kick ... the 0.1 second or so that the foot is in contact with the ball ...

-- The net force on the ball is 500N. That's what makes it accelerate from
just laying there to taking off on a high arc.

-- The net force on the foot is zero ... 500N from the leg, pointing forward,
and 500N as the reaction force from the ball, pointing backward.

That's how the leg's speed remains constant ... creating a dent in the ball
until the ball accelerates to match the speed of the foot, and then drawing
out of the dent, as the ball accelerates to exceed the speed of the foot and
draw away from it.

How are magnetic field lines and electric field lines alike

Answers

Similarities between magnetic fields and electric fields: ... Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges).

In an inverse graph for wavelength versus frequency what are the units of the constant? Would they be (cm/s)/Hz or what?

Answers

Answer: centimeters per second (cm/s)

Explanation:

The relation between the frequency and the wavelenght is:

Velocity = wavelenght*frequency.

So in a relation of wavelenght vs frequency, we will have the relationship:

Where wavelenght is Y and frequency is X

wavelenght = velocity/frequency.

So the constant is the velocity, and we know that the units of the wavelenght is cm, the unit of frequency is Hz (or 1/s), so the units of the velocity is cm/s

Answer:

cm/s

Explanation:

λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.

λ = c/v which is in cm/s/Hz

But we would use just cm! Because that's how we measure the wavelength in this example.

However, the constant is c, the speed of light, which we measure as a speed, so cm/s will do.

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