Answer:
r=2.6 cm
Explanation:
Hi!
Lets call steel material 1, and the new alloy material 2. You know their densities:
The volume of a sphere with radius r is given by:
Then the masses of the bearings are:
For the masses to be the same:
M1*V + M2*V = M1*V1 + M2*V2.
<span>1380*4890 + 2970*4890 = 1380*5660 + 2970*V2. V2 = ?.</span>
Answer:
(a) Current will be
(b) Number of ions will be
Explanation:
We have given that resistance of the biological cell
(a) We have given potential difference of 75 mV
So
From ohm's law we know that current is given by
(b) We have given time t = 0.74 sec
We have to find the charge
We know that charge is given by Q = it, here i is current and t is time
So charge will be
So number of ions will be
The answer will be D. Solid
This is due to solids having little movement/vibrations allowing for the particles to be compact. They don't get to have much freedom.
Most to least will
Answer:
16 fold increase.
Explanation:
As kinetic energy is a function of velocity squared, if the velocity quadruples, kinetic energy increases by a factor of 4² = 16
You need to <u>do</u> it in less than an hour because it is <u>due</u> soon.