X2 = 60
/ 2 / 2
x = 30
Plus or minus square root 60
Answer:
energy : the ability to cause change
work : is force x distance or when an object moves a distance due to a specific force (measured in units of newtons-meters)
potential energy : is stored energy
kinetic energy : is energy in motion
mechanicle energy : the energy of motion such as a moving vechile
thermal energy : total kinetic energy in moving partsticles, like in boiling water (energy of heat)
chemical : energy stored in chemical bonds, like in plants
electromagnetic : waves with electric and magnetic properties , such as light
nuclear energy : energy stored in the nuclear atoms
all dish was from mah brain u better mark meh brainliest >:}
~batmans wife dun dun dun...aka ~serenitybella
Given;
redistivity =1.68/100000000W.m
diameter =0.40in
=0.01016m
length =1m
resistance =?
redistivity =resistance×area/lenght
restance=resistivity × length /area
so, resistance =1.6535/1000000 ohmn
Answer:
The temperature rise is 
.
Explanation:
Given the mass of the hammer 
is 1.19 kg.
And the speed of the hammer 
is 8.4 m/s.
We need to find the temperature change of iron nail having 20 hammer blows.
First, we will find the kinetic energy of the each blow of hammer.
For 20 such blows, the kinetic energy will be
Let us assume that the nail absorbs all the kinetic energy. So, this 839.8 J will be converted into heat energy 
.
Now,
Also, we know that
Where,
is the mass of the nail, which is 
is the specific heat capacity of iron, which is 449 J/kg.K
is the change in temperature.
Plug these value we get,
We can see the temperature rise is 143.9 K.
Answer:
<em><u>Cathode:</u></em> The positive electrode of a cell. Cell: A single encased electrochemical unit (one positive and one negative electrode) which exhibits a voltage differential across its two terminals.
