<span>A person expended 500 newtons to move a full wheelbarrow 30 meters how much work was done?
</span>In physics, a force is said to do work<span> if, when acting, there is a displacement of the point of application in the direction of the force. The work done would be calculated as follows:
</span>
W = F x d = 500 N (30 m) = 15000 J or 15 kJ
Answer:
1.70 J
Explanation:
The heat dissipated is the difference in the kinetic energies.
This is given by
and 
are the initial and final velocities.
With <em>m</em> = 0.175 kg,
The negative sign appears because energy is lost.
Explanation:
Sky appears blue because of Scattering.Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Answer:
The velocity of the flow at point 1 is nine times greater than the velocity at point 2.
Explanation:
We know that the same volume of water entering through point 1 must exit through point 2.
The volume of water per unit of time or the volumetric flow is defined by:
![V_{flow}=v*A\\ where:\\V_{flow}= flow [m^3/s]\\v=velocity[m/s]\\A=area [m^2]](https://tex.z-dn.net/?f=V_%7Bflow%7D%3Dv%2AA%5C%5C%20where%3A%5C%5CV_%7Bflow%7D%3D%20flow%20%5Bm%5E3%2Fs%5D%5C%5Cv%3Dvelocity%5Bm%2Fs%5D%5C%5CA%3Darea%20%5Bm%5E2%5D)
If 
therefore
