The sound wave produced can best be described as a ?

Answers

Answer 1

Answer: the sound wave produced can be described As a longitudinal wave of constant frequency

Longitudinal waves are waves in which the displacement of the medium is in the same direction as or the opposite direction to , the direction of travel of the wave. In a constant frequency, our brain will acknowledge this wave as 'sound'

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When an object is seen moving in relation to a stationary object, the stationary object is called the frame of reference or reference point. Please select the best answer from the choices provided T F

Answers

From the choices provided, the better answer is ' T ', being the
one-letter acronym for the words "true", "truth", and "trust".

This choice is the preferred one, because the statement that
precedes it, dealing with relative motion, is a factually correct
statement.

Two charged objects, A and B, exert an electric force on each other. What happens if the distance between them is increased?

Answers

The correct answer to the question will be that the electric force between them will be decreased.

EXPLANATION:

Let us consider the charge contained by A and B are denoted as Q and Q' respectively.

Let R is the separation distance between them.

As per Coulomb's law in electrostatics, the force of attraction or repulsion between the two charge bodies A and B will be -

Coulombic force F = $(1)/(4\pi \epsilon) (QQ')/(R^2)$

Here, $\epsilon$ is the permittivity of the medium in which the charges are present.

From above, we see that electric force is inversely proportional to the square of separation distance between them.

Mathematically it can be written: $F\ \alpha\ (1)/(R^2)$

As per the question, the distance between A and B is increased.

Hence, the electric force between A and B will be decreased.

I agree with Hussein but I would like to add that when the distance between two charged objects increase, the force decreases by the Coulomb` s Law:
F= k * Q1*Q2 / r^2
where k is constant Q1, Q2-quantity of electricity and r- distance between two charged objects. So when you increase r, you divide with greater number and result decreases.
$F=k(q1 * q2)/( r^(2) )$

Are cells live or dead? a. True b. False

Answers

Scientists consider them the smallest form of life. Yes, they are alive

Which does not represent a change in velocity?Group of answer choices

A person is riding a bicycle at 4 m/s west and decreases her speed to 3 m/s.

A plane is flying south at 600 km/h and then flies directly upwards before returning to the airport.

A balloon is floating up into the air at 1 m/s.

A bus is traveling west at 2 m/s and then turns a corner.

Answers

Answer:

A balloon is floating up into the air at 1 m/s.

Explanation:

Velocity is the displacement divided by the time;

Velocity = $(displacement)/(time)$

It is a vector quantity that has magnitude and direction.

The choice that shows a change in direction is a correct specification of velocity.

A balloon floating up into the air at 1m/s shows no directional change.

Billy is sitting in a chair in class. If the action force is the downward push of his weight on the chair, what is the reaction force?

Answers

Answer: the upward force of the chair pushing on billy

you're very welcome

Explanation: whens their's an downwards force, their's always an opposite

two forces:gravity and the support force that apposes it

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

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!On a spring scale that measures force, a reading shows the force of an object to be about halfway between 7 N and 8 N. Which of the following would be the most accurate measurement for the force?A. 0.0075 NB. 0.75 NC. 750 ND. 7.5 N