your answer is the letter (b)
Answer:
thermal
Explanation:
sorry if you get it wrong
Answer:
0.02
Explanation:
Force,
where N is normal reaction and coefficient of kinetic friction is
. Also, N is equivalent to mg ie N=mg where m is mass of an object and g is acceleration due to gravity. Making
the subject of the formula then

Substituting F with 2 N, m with 10 kg and g with 9.81 then

Answer:
Part a)

Part b)

Explanation:
Resistance of the solenoid is given as
R = 4.10 ohm
now we have

here we know that



now from above formula


Part a)
now we know that it is wounded over the solenoid
so here we can say



Part b)
now length of solenoid is given as


