How are wavelength and frequency related?

Physics

1 answer:

vagabundo [1.1K]3 years ago

5 0

Answer:

Hey dear

Explanation:

Its option C

As Wavelength increases frequency decreases

In other case,

When Wavelength decreases frequency increases

its opposite

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a dog runs after the car, the car is travelling at an average speed of 5 m/s, the dog runs 20 m in 5s. does she catch the car

ratelena [41]

Explanation:

Average speed of car = 5m/s

Distance run by dog = 20m

Time taken = 5s

problem;

does the dog catches the car = ?

Solution;

let us determine speed of the dog;

Speed = $\frac{distance}{time} = \frac{20}{5}$ = 4m/s

The average speed of the car is 5m/s

Average speed of the dog is 4m/s

The dog is slower than the car and it will not catch the car at this rate.

learn more:

Average speed brainly.com/question/5063905

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3 years ago

How does torque of rotating body relate to velocity

Fudgin [204]

Answer:

We know that the torque can be calculated as follows:

T = rpsinα

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It's pretty obvious that T is directly proportional to the momentum, that can be written as p = m·v, with m being the mass of the object and v the velocity of the object.

8 0

3 years ago

A CD has an initial angular speed of 600 rpm. If the disc stop rotating after 4 seconds, what is its angular acceleration?

Elza [17]

Answer:

-15.708 rad/s^2

Explanation:

First, let us covert everything to the same unit. For me, I find dealing with radians/sec more intuitive, but you can solve it in rpm. We are told that the initial angular speed is 600 rpm and after 4 seconds it stops. Let's convert 600 rpm into radians/sec. To do this, multiply by 2*pi/60. This gives 62.83 rad/s. Now let's review our info:

$\omega_i = 600rpm = 62.83rad/s\\\omega_f = 0\\t = 4s\\\alpha = ?$