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3 years ago

The result of a wave generator traveling faster than the speed of a wave is:

Physics

1 answer:

e-lub [12.9K]3 years ago

7 0

Answer:

Shock wave.

Explanation:

A wave that will travel faster than the speed of sound. It will generate regions where the pressure is high, in the medium in which the wave travels.

As the wave travels faster than the sound wave, in that medium compressional waves pile up and will result in regions of high pressure. The source that generates the shock waves will be moving ahead of the waves that are produced by it.

Suppose an air craft travels faster than the speed of sound, it will generate shock waves.

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A firefighter with a weight of 707 N slides down a vertical pole with an acceleration of 2.79 m/s2, directed downward. (a) What

DedPeter [7]

Answer:

The vertical force acting on the firefighter = 908.27 N

Explanation:

Force: Force of a body is defined as the product of mass and its acceleration. The S.I unit of force is Newton (N)

The vertical force acting on the firefighter = Force due to the weight of the firefighter + force due to acceleration.

Ft = Fw - Fa

Where Ft = The vertical force acting on the firefighter, Fw = Force due to the weight of the firefighter, Fa = force due to acceleration.

Fw = mg

Making m the subject of formula in the equation above

m = Fw/g................... Equation 1

Where m = mass of the firefighter, g = acceleration due to gravity,

Given: Fw = 707 N,

Constant: g = 9.8 m/s²

Substituting these values into eqaution 1

m = 707/9.8

m = 72.14 kg.

But, Fa = ma

Where a = acceleration of the firefighter.

Given: a = 2.79 m/s², 

And m = 72.14 kg

Fa = 72.14 × 2.79

Fa = 201.27 N

Therefore, Ft = 707 + 201.27 = 908.27 N

Ft = 908.27 N

The vertical force acting on the firefighter = 908.27 N

7 0

4 years ago

Gantt charts are A. widely used network techniques. B. not widely used. C. planning charts used to schedule resources and alloca

kotykmax [81]

Answer:

planning charts used to schedule resources and allocate time is the correct answer

Explanation:

Gantt Charts are a project planning tool used to track the projects from the start to endpoint.

Gantt charts are used for the preparation and planning of the projects.

By using Gantt charts we can assess how much time a project would take to complete and we can also determine resources required with the help of Gantt charts.

6 0

3 years ago

Spaceship 1 and Spaceship 2 have equal masses of 300kg. They collide. Spaceship 1's final speed is 3 m/s, and Spaceship 2's fina

fiasKO [112]

Answer:

B. 1500 kg*m/s

Explanation:

Momentum p = m* v

In any type of collision, the total momentum is preserved!

The total momentum before and the total momentum after the collision is the same. We know the mass and speed after the collision so we can calculate the total momentum.

p1 + p2 =

m1*v1 + m2*v2

m1 = me = 300 kg

v1 = 3 m/s

v2 = 2 m/s

Substitute the given numbers:

300*3 + 300+2

900 + 600

1500 kg*m/s, which is answer B.

3 0

3 years ago

What is one Pascal pressure? What is its unit?

BabaBlast [244]

Explanation:

the force acting perpendicularly on unit area of surface

unit=pascle .

3 0

3 years ago

Read 2 more answers

A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the

Goshia [24]

To solve this problem we will use the concepts related to power, defined as the amount of energy applied over a period of time.

The energy in this case is the accumulated in the form of potential energy, over a period of time. Thus we will have that the mathematical expression of the power can be expressed as

$P = \frac{E}{t}$