Gravity makes an upward-moving object move 9.8 m/s slower every second.
(30 m/s) / (9.8 m/s²) = 3.06 seconds (rounded)
Answer:
Max kinetic energy for 340 nm wavelength will be 
Explanation:
In first case wavelength of electromagnetic radiation 
Plank's constant 
Maximum kinetic energy = 0.54 eV
Energy is given by 
We know that energy is given
, here
is work function
So 

Now wavelength of second radiation = 340 nm
So energy 
So 
"Most gets converted to heat energy" is the one among the following choices given in the question that describes what <span>happens to the energy put into a machine that does not get used to do useful work. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.</span>
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