Which of the following is an example of plasma?
a. the atmosphere of stars
b. the vapor of super heated water
c. the super hot material released from a volcano
d. clouds in our sky

Answer;

A.the atmosphere of stars

Explanation;

A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons.

The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter.

The plasma is acted upon by electric and magnetic fields created within the plasma itself through localized charge concentrations and electric currents that result from the differential motion of the ions and electrons.

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be