Which of these represents three molecules of carbon dioxide? 3CO2 3C3O2 C3O6 3C2O
2 answers:
Answer:
Explanation: A molecule of compound is formed by the combination of atoms of different elements combined together in a fixed ratio by mass.
Carbon dioxide is a covalent compound formed by sharing of electrons between carbon and two oxygen atoms in which less electronegative atom is named first followed by the more electronegative element with a prefix indicating the number of atoms followed by an -ide.
The number is represented by a stochiometric coefficient in the beginning of chemical formula.
Thus the correct representation of 3 molecules of carbon dioxide is
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Answer:
F = 0.078N
Explanation:
In order to calculate the magnitude of the force on the wire you first calculate the magnitude of the magnetic field generated by the solenoid, by using the following formula:
(1)
μo: magnetic permeability of vacuum = 4π*10^-7 T/A
N: turns of the solenoid = 580
i: current in the solenoid = 36A
L: length of the solenoid = 18cm = 0.18m
You replace the values of all parameters in the equation (1):
Next, you calculate the force exerted on the wire, by using the following formula:
(2)
i: current in the wire = 27A
L: length of the wire that perceives the magnetic field (the same as the radius of the solenoid) = 2.0 cm = 0.02m
θ: angle between wire and the direction of B
B: magneitc field in the solenoid = 0.145T
The direction of the wire are perpendicular to the direction of the magnetic field, hence, the angle is 90°.
You replace the values of the parameters in the equation (2):
The magnitude of the force on the wire is 0.078N