When two sprockets are in contact with each other then at the contact of sprockets the tangential velocity and tangential acceleration of the sprockets must be same.

Now we can say that tangential velocity is given as

v = Rw

here we know that

also we can say

x = width of each sprocket

So tangential speed is given as

now since tangential speed of two sprockets are same

given that

= 50

= 20 rpm

= 30

now from above equation

rpm

**Answer:**

38.1 N

**Explanation:**

The electrostatic force between two charged objects is given by:

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two objects

In this problem, we have

so, the electrostatic force is

The idea behind capitalism is that the free market of products and ideas is owned and driven by private citizens. A capitalist society is a social order in which private property rights and the free market serve as the basis of trade, distribution of goods, and development.

To solve this problem it is necessary to apply the concepts related to the described wavelength through frequency and speed. Mathematically it can be expressed as:

Where,

Wavelength

f = Frequency

v = Velocity

Our values are given as,

Speed of sound

Keep in mind that we do not use the travel speed of the ambulance because we are in front of it. In case it approached or moved away we should use the concepts related to the Doppler effect:

Replacing we have,

Therefore the frequency that you hear if you are standing in from of the ambulance is 0.1214m