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If two bundles of goods satisfy a consumer equally well, what can we say about the consumer?

She is optimally satisfied.

None of the above.

She is in a position of equilibrium.

She is indifferent between the bundles.

She is on her budget constraint.

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In spending all his income, the consumer chooses the bundle of goods that maximizes his utility. Which of the following statements will be correct?

The addition to utility of the last unit of the good is equal across all goods.

none of the above

The addition to utility of the last unit of the good per dollar is equal across all goods.

The marginal utilities of all goods are equal.

Expenditures on all goods are equal.

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Suppose a consumer can purchase only two goods, beef and chicken. If the price of beef falls (with all other variables held constant), and the consumption of chicken increases, we can conclude that the increased consumption of chicken is due to

the substitution effect only.

both the income effect and the substitution effect.

a change in the consumer's preference toward chicken.

the income effect only.

neither the income effect nor the substitution effect.

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Junkfood Jill spends all of her income on jellybeans and Jolt cola. Suppose that Jill's income is $30, the price of a bag of jellybeans is $6, and the price of a bottle of Jolt cola is $2. Which of the following combinations of jellybeans and Jolt cola lies inside Jill's budget line?

5 bags of jellybeans and 0 bottles of Jolt

5 bags of jellybeans and 15 bottles of Jolt

4 bags of jellybeans and 4 bottles of Jolt

3 bags of jellybeans and 6 bottles of Jolt

2 bags of jellybeans and 8 bottles of Jolt

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The budget line depends on

preferences only.

income and prices.

preferences and prices.

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La figure suivante montre deux trajectoires circulaires de particules dans un champ magnétique uniforme, perpendiculaire à la page. Les deux charges ont le même module de vitesse et |q₁|=|q₂|.

Laquelle des affirmations est vraie ?

q₁< 0et m₁ = m₂

q₂> 0et m₁ < m₂

q₁> 0et m₁ < m₂

q₁< 0et m₁ > m₂

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Quatre ions se déplacent dans un champ magnétique uniforme et perpendiculaire à leur vitesse. Voir figure ci-dessous. On donne : |q₁|=|q₂|=|q₃|=|q₄|. Classez ces ions par ordre croissant de leur masse.

m₄< m₁< m₂= m₃

m₁< m₄< m₂< m₃

m₄< m₁< m₃< m₂

m₄< m₁< m₂< m₃

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If the price of the good measured on the horizontal axis falls, the substitution effect is indicated by movement to a

lower indifference curve.

flatter part of a higher indifference curve.

flatter part of the same indifference curve.

steeper part of the same indifference curve.

higher indifference curve.

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La force magnétique F sur une charge q en mouvement avec une vitesse v est donnée par le produit vectoriel : F = q v x B. Cochez la bonne réponse

Aucune de ces trois réponses

La force F est toujours perpendiculaire aux vecteurs B et v,

Le champs magnétique B est toujours perpendiculaire à la vitesse v

Le module de la force s'écrit : F = |q |v B cosØ

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If the price of a good rises, then in the new consumer equilibrium all of the following are true except

the marginal utility from consuming the good will be higher than before the price rise.

the marginal utility from substitutes will be lower than before the price rise.

the quantity of substitutes consumed increases.

the quantity of the good consumed decreases.

the marginal utility from the good equals its new higher price.

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