Answer:
The number of turns in the solenoid is 1.95 x 10⁴.
Explanation:
given information:
the length of solenoid, L = 0.34 m
magnetic field, B = 6.5 T
current, I = 90 A
to find the number of turn in solenoid, we can start from the magnetic field equation,
B = μ₀nI, n = N/L
B = magnetic field (T)
μ₀ = permeability (4π × 10⁻⁷ T.m/A)
n = the number turn per unit length (turn/m)
I = current (A)
N = the number turn in solenoid
L = the length of solenoid
thus,
B = μ₀IN/L
N = B L/μ₀I
= (6.5) (0.34)/(4π × 10⁻⁷) (90)
= 1.95 x 10⁴ turn
Answer:
333.46 J/g
Explanation:
To convert from kiloJoules per mole to kiloJoules per gram, first we convert to Joules per mole:
6.009 kJ/mol * 1000 = 6009 J/mol
1 mole of water contains 18.02 grams of water, hence:
(1 J/mol) / (1 mol) * (1 mol) / (18.02g)
Therefore:
(6009 J/mol) / (1 mol) * (1 mol) / (18.02g)
= 333.46 J/g
Another way of seeing this is, to convert from Joule per mole to Joules per gram, divide by the number of grams in one mole. In the case of water, it's 18.02 grams in one mole.
Answer:
8
Explanation:
octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.
D, as he is testing which type of fertiliser is the best, and hence it should be the only changed variable. Everything else should remain the same.
Answer: a moving car
flowing river
maybe the boulder on the hill if its moving
Explanation: poteoinal enrgry means something is moving sorry im not the bestat explaing things