a,b,c is your answer light and sound are not considered matter and heat is energy created from matter and electricity is particles moving basically therefore electricity is matter hope this helps
Here we will say that there is no external torque on the system so we will have

here we know that

where we know that

Also we know that

initial angular speed will be

now from above equation



now we have

so final speed will be 2.41 rad/s
Answer:b- Psuedoscience
Explanation:
It is a pseudoscience because it involves beliefs and practices which is mistakenly regarded as being based on scientific grounds.
No solid evidence is there which can prove that astrology is authentic and true that's why it is a Psuedo science
Answer:
A reserved power is a power specifically reserved to the states. Powers include setting up local governments and determining the speed limit. A concurrent power is a power that is given to both the states and the federal government.
Explanation: