Answer:
First 8 if wrong then correct me. Second it's direction correct me if wrong.
Explanation:
Answer:
6.81*10^-20 J
Explanation:
The energy from the light does two things: it removes the electrons from the surface of the metal and the rest is taken up as kinetic energy by the electrons.
K.E = hf - work function
Answer:
380m
Explanation:
We have the speed of the spaceship v = 0.75c
Max measures contracted length L of the spaceship as it travels
We have been given L = 250m
As this ship stops he is going to get exact length of the ship = Lol
We solve using this formula
L = Lo√ 1-v²/c²
From the formula above we make Lo subject of the formula
When we input values
Lo = 250/√1-(0.75c/c)²
= 250/√1-(0.75)²
= 250/√0.4375
= 250/0.6614
= 377.98
This is approximately 380
it provides that whoever did it was pretty smart to grind the serial number off of the gun they used and the bullets that way a make couldnt be traced back individual i guess
<span>First we must find the amount of acceleration needed using the equation Vfinal^2 = Vinitial^2 + 2*Acceleration*distance => 0 = 25^2 + 2*Acceleration*0.025m => Acceleration = 13,587m/s^2. Plug this into Force = Mass*Acceleration equation => Force = 2.5*13,587 = 33,967.5N.</span>
