Answer:
B) static electricity.
Explanation:
Static electricity is the buildup of electrical charge on an object.
When you rub a balloon against your hair, you are transferring negative charges (electrons) from your hair to the balloon. Your hair loses negative charges, so it now has positive charges.
When you remove the balloon from your hair, the opposite charges attract each other and pull your hair towards the balloon.
When you place the balloon against the wall, the wall is more positively charged than the balloon.
The balloon will stick to the wall because the opposite charges attract.
A) and D) are wrong, because hair and balloons are not attracted by magnetic fields.
C) is wrong, because there is no electrical current.
Electric and magnetic fields do not affect xrays as they only affect charged particles and xrays have no charge
hope that helps
I believe the answer is 1.43
Answer:
Sodium Bicarbonate on decomposition produces Carbon dioxide gas and Water vapors.
<span> 2 NaHCO</span>₂<span> </span> →<span> Na</span>₂<span>CO</span>₃<span> (s) </span>+ <span> CO</span>₂<span> (g) + H</span>₂<span>O (g)
</span>
Explanation:
Let suppose you burn 168 g ( 2 moles ) of NaHCO₃, a gas will produced and product is left behind. On measuring the product formed it will be almost equal to 105 g. This shows that the product is Na₂CO₃ and 1 mole of it is being produced after decomposition of sodium bicarbonate.
Answer:
Here's what I get.
Explanation:
Two factors:
1. Higher accelerating voltages
Both types use a beam of accelerated electrons as a source of illumination.
Resolution depends on the wavelength of the electron beam. The shorter the wavelength, the smaller the objects you can "see."
SEMs usually use acceleration voltages up to 30 kV, while TEMs can set them as high 300 kV. Thus, the electron wavelengths in TEMs are shorter by a factor of 10.
2. Less spherical aberration
Spherical aberration degrades the quality of the image. It decreases as wavelength decreases, so you can push the magnification higher with a TEM without losing image quality.