Baking a cake would be a chemical change because the baking powder/soda undergoes through a reaction, you can tell because it generates bubbles/bumps when you bake it.
A chemical change is also irreversible so when you bake the cake, you cannot separate the ingredients.
So your answer would be B. Baking a cake
Hope this helps !
Answer:
Explanation:
As we know that disc can be treated as sheet of uniform charge density if the electric field is to be calculated at a point near its surface
so we can say that here electric field between two opposite charged disc is given as
so we have
here we know that
now we have
Answer:
Consider electrons incident on a Young's double slit
If one slit is covered, the electrons will form a maximum, on the screen, as if they were particles incident on the screen
If both slits are open, the pattern formed on the screen will be the same as if a wave were incident on the screen, even tho electrons are slowed to the point that only 1 electron is incident on the screen at one time.
That means that the electron interferes with itself to create the interference pattern on the screen, and there is no way to determine which slit the electron went thru without destroying the interference pattern.
A is an example of E=MC^2