The correct answer to the question you gave above would be a black hole. I<span>f the core of a supernova explosion contains three or more solar masses of matter, the core will most likely become a black hole. </span>
Answer:
The mass number of an element is the number of protons plus neutrons.
Explanation:
The mass number of an element is the number of protons plus neutrons, so the correct answer is the option C.
B = 0.018 T Ans,
Since, it is moving in a circular path, thus, centripetal force will act on it i.e.
F =
![\frac{ mv^{2} }{r}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20mv%5E%7B2%7D%20%7D%7Br%7D%20)
where, m is the mass of the object, v is the velocity and r is the radius of circular path.
And, since a positive charge is moving, it will create magnetic force which is equal to F = qvB
where q is the charge, v is the velocity of the particle and B is the magnetic field.
Now, the two forces will be equal,
i.e.
![\frac{ mv^{2} }{r}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20mv%5E%7B2%7D%20%7D%7Br%7D%20)
= qvB
⇒
![\frac{ mv }{r}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20mv%20%7D%7Br%7D%20)
= qB
⇒B =
![\frac{ mv }{qr}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20mv%20%7D%7Bqr%7D%20)
<span>putting the values, we get,
</span>
use q = 1.6 * 10^ -19
⇒ B = 0.018 T
I think the correct answer from the choices listed above is option B. The question that the group of students came up with would be an extremely difficult question to answer scientifically because how people see or experience color is subjective and people might see it differently.
Answer:
D.
Explanation:
First, a toaster uses electrical energy. Then, it uses this electrical energy and the mechanical energy of you pushing on the lever to produce thermal energy, or heat, and sound as the object in the toaster pops up.