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4 years ago

Select all that apply. Sound is a ____ wave. longitudinal transverse pressure circular

2 answers:

5 0

The following apply:
Sound is a LONGITUDINAL wave.
Sound is a PRESSURE wave.
Longitudinal waves are waves in which the displacement of the medium is in the same direction as or opposite direction to the direction of wave propagation. An example of longitudinal wave is sound wave. Sound wave is also considered as a pressure wave as the result of the presence of repeating patterns of high and low pressure regions moving through a medium.

Readme [11.4K]4 years ago

4 0

The sound is both longitudinal and transverse waves.
The sound is conducted through plasma, liquids, and gases, as longitudinal waves or compression waves. It needs a medium to proliferate. Through solids, nonetheless, it can be transferred as both longitudinal waves and transverse waves.

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Question 7.

Given:

Mass, m = 2200 kg

Time, t = 8 s

Velocity = 12 m/s

Let's find the average net force required to stop the car.

To find the average net force required to stop the car, let's first find the acceleration of the car.

$v=v_o+at$

Where:

Initial velocity, vo = 12 m/s

Final velocity, v = 0 m/s (velocity of car when it stops)

t is the time = 8 seconds

a is the acceleration.

Rewrite the formula for a:

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

Hence, we have:

$\begin{gathered} a=\frac{0-12}{8} \\ \\ a=\frac{-12}{8} \\ \\ a=-1.5m/s^2 \end{gathered}$

The acceleration is -1.5 m/s² (negative because the car is deccelerating).

Now, to find the net force, we have:

$\sum ^{}_{}F=ma$

Where:

m is the mass = 2200 kg

a is the acceleration = -1.5 m/s²

Hence, we have:

$\sum ^{}_{}F=2200\times(-1.5)=-3300\text{ N}$

The negative sign indicates that the force acts in the opposite direction the car is travelling.

Therefore, average net force required to stop the car is 3300 Newtons in the opposite direction.

ANSWER:

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1 year ago

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3 years ago

Earth reads 650N what is your mass

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m = 65 kg

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