Pipettors, microcentrifuge, timers, mixers, a water bath. And those should only be used for radioactive materials (sorry if this is wrong it’s my best knowledge for this stuff :/)
First of all,
The electric field at the surface of the sphere is given by
E = kQ/r²
The field strength at which breakdown occurs in the air is <span>3.0 MV/m
</span>
So, E = 3.0 MV/m
<span>The sphere potential is defined as
V = kQ/r</span>
<span>If we divide E/V we get
E = V/r </span>
<span>r = V/E = 20000V / 3.10^6 V/m = 6.66 </span>10^-3 m = 6.66 mm
2. Charge
<span>V = kQ/r .............>>
</span>
Q = Vr/k = 20000V *( 6.66 10^-3 m)/ (9.10^9 N m2/C2) = 1.481 10^-8 C
It's <em>chemical energy</em>.
It started out as energy carried in solar radiation. It was absorbed by plants, and they stored it as chemical energy in their stems and leaves. The plants got cut down, washed off, and delivered to the supermarket. Your mom brought them home, camouflaged them so they wouldn't look like veggies, and put them on your plate while you weren't looking. Eventually, some of them got into your body, got digested, and their energy got stored in your cells as glucose and fat. When you needed some energy to do something physical or mental, you grabbed some of that energy that you had stored as chemical energy, and used it to operate your muscles and your brain. You used the glucose (blood sugar) first, and if you ever reached the point where that was running low, you started to use the fat that you have stored around in many places.
Answer:
Explanation:
A number can be written in the form of :
Where
m is the real number
n is any integer
In this case, the average distance from the Sun to the Earth is given,
d = 150000000000 meters
There are 10 zeroes in this number. We need to write this number in scientific notation. It is given by :
So, the average distance from the Sun to the Earth is . Hence, this is the required solution.
Let's choose east as positive x-direction and south as positive y-direction. We can resolve the two displacement along these two axes:
- Displacement 1 (3.5 km, south of west
- Displacement 2 (2.7 km, east of south
So, the total components on the two directions are
And the magnitude of the hiker's resultant displacement is