一定体积的氢气和氦气的混合气体,在27℃时压强为202kPa,现使该气体的体积膨胀至原体积的4倍,压强变为101kPa,试求膨胀后混合气体的温度。
A、215 J
B、-125 J
C、-215 J
D、125 J
(1)安东尼奥的预算约束线将如何变动?以纵轴表示新书进行说明。
(2)在价格变动之后,安东尼奥的境况是变好了还是变坏了?
Antonio buys five new college textbooks during his first year at school at a cost of $ 80 each,
Used books cost only $ 50 each. When the bookstore announces that there will be a 10 percent increase in the price of new books and a 5 percent increase in the price of used books, Antonio's father offers him $ 40 extra.
a What happens to Antonio' s budget line? Illustrate the change with new books on the vertical axis.
b. Is Antonio worse or better off after the price change? Explain.
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!