A level a metal bar is heated to a certain temperature and t

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/06/03 01:02:58

A level
a metal bar is heated to a certain temperature and then th heat source is removed .at time t minutes after the heat source is removed ,the temperature ,θ degrees clelsius ,of the metal bar is given by θ=280/1+0.02t,at what rate is the temperature decreasing 100 minutes after the removal of the heat source

温度函数为θ=280/(1+0.02t) t≥0(min)
在100分钟后,θ=280/(1+0.02*100)=93.33(度)

A 16.0 g sample of nickel metal is heated to 100.0°C and dro 英语翻译Nowadays,drinking and driving is becoming a heated topic When to a certain temperature,water can be turned into steam the rate of a certain reaction is directly proportional to t there is a bar（ next door to ）the store 与 there is a bar（ ne a certain 英语翻译On a secondary and reflective level,exhibition design is Recently,is it wise to make friends online has been a heated Milk is heated to 132?c for 1-3 seconds by pouring it over a There is a bar next door to the station. DId you ( ) your temperature?---yes,my temperature is a litt 英语单词练习1条D__ means short bar with a metal ball at each end,us