:the truck is to be towed using two ropes. determine the magnitudes of forces fa and fb acting on each rope in order to develop a resultant force of 950 n directed along the positive x axis. set θ = 50°.

Fa=774 N

Fb=346 N

Explanation:

We will solve this problem by equating forces on each axis.

While towing we know that car is mot moving in y-direction so net force in y-axis must be zero

⇒∑Fy=0

⇒

⇒

⇒

Given that resultant force on car is 950N in positive x-direction

⇒∑Fx=950  

⇒

⇒

⇒

⇒

⇒

⇒

⇒

Therefore approximately, Fa=774 N and Fb=346 N

you would expect a sound wave to speed up. - b)

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =