Choice 'D' describes speed in the metric units 'meter' and 'second'.
With no mention of direction, it can't be called 'velocity'.
Answer:
Explanation:
Given
Electric Field 
velocity 
mass of electron 
Force on a charge Particle moving in Magnetic Field
![F=e\left [ \vec{E}+\left ( \vec{v}\times \vec{B}\right )\right ]](https://tex.z-dn.net/?f=F%3De%5Cleft%20%5B%20%5Cvec%7BE%7D%2B%5Cleft%20%28%20%5Cvec%7Bv%7D%5Ctimes%20%5Cvec%7BB%7D%5Cright%20%29%5Cright%20%5D)
![a=\frac{e\left [ \vec{E}+\left ( \vec{v}\times \vec{B}\right )\right ]}{m}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Be%5Cleft%20%5B%20%5Cvec%7BE%7D%2B%5Cleft%20%28%20%5Cvec%7Bv%7D%5Ctimes%20%5Cvec%7BB%7D%5Cright%20%29%5Cright%20%5D%7D%7Bm%7D)
![a=\frac{1.6\times 10^{-19}\left [ 2\hat{i}+5.4\hat{j}+\left ( 8\hat{i}\times 0.4\hat{k}\right )\right ]}{9.1\times 10^{-31}}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B1.6%5Ctimes%2010%5E%7B-19%7D%5Cleft%20%5B%202%5Chat%7Bi%7D%2B5.4%5Chat%7Bj%7D%2B%5Cleft%20%28%208%5Chat%7Bi%7D%5Ctimes%200.4%5Chat%7Bk%7D%5Cright%20%29%5Cright%20%5D%7D%7B9.1%5Ctimes%2010%5E%7B-31%7D%7D)
Heat
You can usually warm something by adding energy. The added energy can be from light, electricity, friction, a chemical reaction, nuclear reaction, or any other kind of energy. When first added to a substance, energy might be concentrated in one atom, but this one will soon bump into others and spread the energy. Eventually, every atom or molecule in the substance will move a bit faster. When the added energy is spread throughout a substance, it is then called heat energy, thermal energy, or, simply heat. All three terms mean the same thing. Heat is a form of energy, so it has the units of energy. In the SI system, this is Joules. Many other units to measure thermal energy are in common use. Calories and BTU's are common heat units.
Temperature
You cannot measure heat directly, but you can detect its effect on a substance. Changes in heat can usually be detected as changes in temperature. Usually, when you add energy to a bunch of atoms they move faster and get hotter. Similarly, if you remove energy from a bunch of atoms, they usually move less and get cooler.
"<span>The process by which your body converts food into energy", sounds more accurate.
"</span><span>The amount of potential energy contained in food", is basically a long way of saying - Calories.
So, I would go with the one that talks about the process of converting food to energy.</span>
Answer:
Give them assignment on the pandemic.
Explanation:
If you wish, each student can talk about some other aspect of the pandemic that seems important and interesting then you have to give them the assignment of presentation and give reward on them. The students will definitely make the presentation on other aspects of the pandemic and when they present it in the class it enhance the knowledge of other students as well.
