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Which wave form oscillates both parallel and perpendicular to the direction of the wave motion? transverse waves, longitudinal w

Solnce55 [7]

Hope this answer helps:)

6 0

3 years ago

what is the mass number in atomic mass units of an atom with 14 protons, 14 electrons, and 16 neutrons

lozanna [386]

28.090.............................................

8 0

3 years ago

The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:29, so that the voltage of 120 v

kifflom [539]

Transformer contains two coils: primary and secondary. They allow change of voltage to lower or higher value. In first case we have step-down and in second case we have step-up transformer.

Formula used for transformer is:
$\frac{ N_{1} }{N_{2} } = \frac{ V_{1} }{V_{2} }$

Where:
N1 = number of turns on primary coil
N2 = number of turns on secondary coil
V1 = voltage on primary coil
V2 = voltage on secondary coil

In a step-down transformer primary coil has more turns than secondary coil. So the ratio 1:29 means that for each turn on secondary coil we have 29 turns on primary coil.

We can solve the equation for V2:
${V_{2}}=\frac{ V_{1}{N_{2} } }{N_{1} } \\ {V_{2}}=\frac{ 120*{x } }{29x } \\ {V_{2}}=4.14V$

Secondary coil provides voltage of 4.14V.

8 0

4 years ago

Potential energy due to an objects compression or extension is called ______ potential energy

coldgirl [10]

Answer:

elastic potential energy

8 0

3 years ago

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Oduvanchick [21]

By defining kinematics and derivative relations we can find which statements are true or false:

a) False. The derivative is the instantaneous velocity.

b) True. The second drift is the instantaneous acceleration.

c) False the derivative is

d) False the derivative is

a) The velocity is defined with the variation of the position with respect to time.

$v= \frac{dx}{dt}$

Wher x is the position and t the time.

In the change of the average velocity is the average value of the velocity in an interval

$v = \frac{v_f - v_o}{t}$

We can see that the derivative is the speed in a very small timet, that is, the speed instantaneous. Therefore the statement is False.

The prime derivative of the position is the instantaneous velocity, not the average velocity.

b) Acceleration is defined as the change in position with respect to time..

$a = \frac{dv}{dt}$

Let's use the chain rule.

a = $\frac{d}{dt} \frac{dx}{dt}$

a = $\frac{d^2 x}{dt^2}$

Therefore the second derivative of the position is the instantaneous acceleration.

The statement is True.

Questions c and d ask the derivative of a function

f (x) = 2 x aⁿ

c) derivative with respect of x

$\frac{df}{dx} = 2 a^n$

The answer is False.

d) derivative with respect to a.

$\frac{df}{da} = 2n \ x a^{n-1}$

Answer d is false

In conclusion using the definition of kinematics and derivative relations we can find which statements are true.

a) False. The derivative is the instantaneous velocity.

b) True. The second drift is the instantaneous acceleration.

c) False the derivative is: $\frac{df}{dx} = 2 a^n$

d) False the derivative is: $\frac{df}{da} = 2n \ x a^{n-1}$

Learn more about the relationship between derivatives and kinematics here: brainly.com/question/15344251

8 0

3 years ago