<em>math</em><em>ematically</em><em>,</em>
<em>
</em>
<em>but</em><em> </em><em>weigh</em><em>t</em><em>=</em><em> </em><em>Force</em><em>.</em>
given pressure
18N/cm^2
and <em>Force</em> = 9000N
making <em>area</em> the subject in the relation above.

substitute their values into the equation


Answer:
Density = 3 x 10⁻⁵ kg/m³
Explanation:
First, we will find the volume of the planet:

Now, we will use the expression for gravitational force to find the mass of the planet:

where,
m = mass = ?
g = acceleration due to gravity = 6.67 x 10⁻¹¹ m/s²
G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ Nm²/kg²
r = radius = 8000 m
Therefore,

Therefore, the density will be:

<u>Density = 3 x 10⁻⁵ kg/m³</u>
Answer:
The length of the bridge during the hottest part of summer is 
Explanation:
From the question we are told that
The length of the steel bridge is 
The temperature for this length is 
The temperature at summer 
The coefficient of linear expansion is 
Generally the change in length of the steel bridge is mathematically represented as

Substituting value


The length of the bridge in summer is mathematically evaluated as

Substituting values


Another example of sportsmanship is playing equally with other opponents and treated appropriately.