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3 years ago

A boat floats up and down with the time period of two seconds as the wave passes under it. What is the frequency ?

Physics

1 answer:

wolverine [178]3 years ago

3 0

A). It takes 2 seconds to happen one time.
So it happens 1/2 of a time per second.
That's a frequency of 1/2 Hertz.

b). Wave speed = (frequency) x (wavelength)

= (0.5 Hz) x (6 meters)

= 3 meters/sec

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What is the difference between speed and velocity? A. Velocity takes acceleration into account, while speed does not. B. Speed t

nalin [4]

C!

V= displacement/time
Speed= distance/time

Displacement is the space between two points, usually from the first to last point, but doesn't have to be. (Basically, it's the distance between your starting and ending point). With displacement, direction matters, but with speed, direction doesn't.

Speed, on the other hand, is the entire traveled distance as a whole. Unlike displacement, direction doesn't matter.

I hope this helped!

5 0

3 years ago

A typical value for the coefficent of quadratic air resistance on a cyclist is around c=0.20 N/m(m/s)2. Assuming thath the total

lesantik [10]

Answer:

Characteristic time τ=20 s

When V = 15 m/s

t = 6.66 s

When V = 10 m/s

t = 20 s

When V = 5 m/s

t = 60 s

Explanation:

Given that

c=0.20 N/m(m/s)2

m = 80 kg

Vo=20m/s

Characteristic time τ=m/cvo.

$\tau =\dfrac{m}{c.V_o}$

$\tau =\dfrac{80}{0.2\times 20}$

Characteristic time τ=20 s

We know that velocity after t time given as follows

$V =\dfrac{V_o}{1+\dfrac{\tau}{t}}$

When V = 15 m/s

$15 =\dfrac{20}{1+\dfrac{20}{t}}$

t = 6.66 s

When V = 10 m/s

$10 =\dfrac{20}{1+\dfrac{20}{t}}$

t = 20 s

When V = 5 m/s

$5 =\dfrac{20}{1+\dfrac{20}{t}}$

t = 60 s

5 0

3 years ago

Which factor is a component of skill-related fitness?

lukranit [14]

There are six skill-related fitness components: agility, balance, coordination, speed, power, and reaction time. Skilled athletes typically excel in all six areas. Agility is the ability to change and control the direction and position of the body while maintaining a constant, rapid motion.

6 0

3 years ago

Read 2 more answers

What is the significant figure of 0.00000006

Maksim231197 [3]

1 of them i think try it out

3 0

3 years ago

How far does a car travel as it accelerates from rest to 24 m/s in 6 seconds?

____ [38]

Answer:

$\boxed{\sf Distance \ travelled = 72 \ m}$

Given:

Initial velocity (u) = 0 m/s (Starts from rest)

Final velocity (v) = 24 m/s

Time taken (t) = 6 seconds

To Find:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

$\boxed{ \bold{s = (\frac{v + u}{2} )t}}$

By substituting value of v, u & t in the equation we get:

$\sf \implies s = ( \frac{24 + 0}{2} ) \times 6 \\ \\ \sf \implies s = \frac{24}{2} \times 6 \\ \\ \sf \implies s = 12 \times 6 \\ \\ \sf \implies s = 72 \: m$

$\therefore$

Distance travelled by car (s) = 72 m

7 0

4 years ago