Exercice 1 Une soupe du commerce contient du sel à la concentration en masse Cm = 9,8 g. L.

1.1. Quelle masse m de sel contient un bol de soupe de volume V = 380 mL ?

1.2. La dose maximale de sel recommandée par jour est 5 g. Cette soupe est-elle trop
salée ?

Exercice 2

Manon se prépare un thé avec deux morceaux de sucre.

Calculer la concentration en masse Cm de sucre dans le thé.

Données
- Masse d'un morceau de sucre:m = 6g
- Volume de thé : V = 250 mL.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

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a. are

what is the actual question though?