2 ways:
If you increased the speed of rotation of the Earth you would get a perceived decrease in the weight of the object due to an increased centrifugal force.
<span>Increase it fast enough and the momentum of the object will eventually
overcome the gravitational pull on it and it will fly off the planet.</span>
Use v^2 - u^2 = 2as
Here, u = 20 m/s , a = -0.5 m/s^2 and v = 0
- 400 = -s ======> s = 400 m
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For the potential energy is converted to kinetic energy is mathematically given as
n=24.44%
<h3>What efficiency of the potential energy is converted to kinetic energy?</h3>
Generally, the equation for the potential energy is mathematically given as
Ei=mgh
Ei=49.0\*9.81* 1.8
Ei=865.24J
Final total energy
K.E=0.5mv^2
K.E=0.5*49.0* (3.00)^2
K.E=211.5J
In conclusion, efficiency
n=Ef/Ei*100
n=211.5*865.24*100
n=24.44%
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She feel warm due to sun shining on her back which shows the transfer of energy due to Radiation Mode of heat transfer.
Because in this case we do not need any medium to transfer the heat and all energy is transferred due to electromagnetic waves.
She feels warm sand under her feet which shows the heat transfer due to conduction mode.
Because in this mode of heat transfer the heat is transmitted by direct contact.
A cool breeze is blowing from the water which shows the heat transfer due to convection mode.
Here thermal energy is being transferred by the moving medium molecules.