Ernest Rutherford
don't know the age sorry
As one moves farther and farther from the Sun, the distance between adjacent planets is greater.
The properties of the wave don't determine its speed. The properties of the medium do. You can FIND the speed by measuring the wave's frequency and wavelength.
The gravitational force is gravity meanwhile the electric force is electric
Nearly equal the output work is greater than the input work because of friction.All machines use some amount of input work to overcome friction.The only way to increase the work output is to increase the work you put into the machine.You cannot get more work out of a machine than you put into it.