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Dima020 [189]
3 years ago
15

A wave has a wavelength of 30 mm and a frequency of 5.0 hertz. What is its speed?

Physics
1 answer:
Alenkinab [10]3 years ago
8 0
                 Wave speed  =  (frequency) x (wavelength)

                                       =  (5 / second)  x  (30 mm) 

                                       =      150 mm/second  =  0.15 meter/second .
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Picking up sound waves is the stage of listening that most people refer to as what?
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1 year ago
Mr. Phillips' car is parked on a steep hill with the brakes applied and the engine off. Because of the car's position, it has gr
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The anser is b

Explanation:

4 0
3 years ago
A stuntwoman is going to attempt a jump across a canyon that is 77 m wide. The ramp on the far side of the canyon is 25 m lower
charle [14.2K]

Answer:

  She will make the jump.

Explanation:

We have equation of motion , s= ut+\frac{1}{2} at^2, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

First we will consider horizontal motion of stunt women

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Substituting

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So she will cover 77 m in 2.85 seconds

 Now considering vertical motion, up direction as positive

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    Substituting

           s=7.25*2.85-\frac{1}{2}*9.8*2.85^2=20.69-39.80 =-10.11 m

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6 0
3 years ago
A ball is thrown horizontally at 6.0 m/s from a cliff 80 meters high. How far from the base of the cliff will the ball hit the g
UNO [17]

Answer:

160 meters I think

Explanation:

if I'm wrong I'm a troop juSt trying to get points to ask a couple of questions

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3 years ago
A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass o
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Answer:

1700 kg

Explanation:

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2 years ago
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