6000 newtons is the right answer
The mocking energy consumption because manufacturing and consumption are related
Answer:
The magnitude of the change in gravitational potential energy of the earth-athlete system over the course of the race is 643,536Joules
Explanation
Potential energy is one of the form of mechanical energy and it is defined as the energy possessed by a body due to virtue of its position. When the body is under gravity, it possesses an energy called the gravitational potential energy.
Gravitational potential energy is expressed as shown:
GPE = mass × acceleration due to gravity × height
Given mass of athlete = 80kg
height covered = 820m
acceleration due to gravity = 9.81m/s
GPE = 80×9.81×820
GPE = 643,536Joules
Answer:
A compass needle points north because the north pole of the magnet inside it is attracted to the south pole of Earth's built-in magnet. Now if the needle in your compass is pointing north, that means it's being attracted (pulled toward) something near Earth's north
Explanation:
Answer:
The energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.
Explanation:
Power of toaster oven, P = 1.2 kW
Time, t = 6 minutes = 360 s
The energy used by toaster oven is given by :
![E=P\times t\\\\E=1.2\times 10^3\times 360\\\\E=432000\ J\\\\E=432\ kJ](https://tex.z-dn.net/?f=E%3DP%5Ctimes%20t%5C%5C%5C%5CE%3D1.2%5Ctimes%2010%5E3%5Ctimes%20360%5C%5C%5C%5CE%3D432000%5C%20J%5C%5C%5C%5CE%3D432%5C%20kJ)
Power of fluorescent light (CFL) bulb, P' = 11 W
Time, t' = 11 h = 39600 s
Energy used by fluorescent light (CFL) bulb is given by :
![E'=P'\times t'\\\\E'=11\times 39600\\\\E'=435600\ J\\\\E'=435\ kJ](https://tex.z-dn.net/?f=E%27%3DP%27%5Ctimes%20t%27%5C%5C%5C%5CE%27%3D11%5Ctimes%2039600%5C%5C%5C%5CE%27%3D435600%5C%20J%5C%5C%5C%5CE%27%3D435%5C%20kJ)
So, the energy consumption by toaster oven is 432 kJ and that of fluorescent light (CFL) bulb is 435 kJ.