最好会英文的...1 A turtle is moving with a constant acceleration along a straight ditch.He starts his stopwatch as he passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along the ditch.As he passes the pine tre

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 19:05:05

最好会英文的...1 A turtle is moving with a constant acceleration along a straight ditch.He starts his stopwatch as he passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along the ditch.As he passes the pine tre
最好会英文的...
1 A turtle is moving with a constant acceleration along a straight ditch.He starts his stopwatch as he passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along the ditch.As he passes the pine tree,his speed is 1.2m/s.How far was he from the fence post when he started from rest?
2.A 50g pen has a retractable tip controlled by a button on the other end and an internal spring that has a constant of 1200N/m.Suppose you hold the pen vertically on a table the tip pointing up.Clicking the button into the table compresses the spring 0.5cm.When the pen is released,how fast will it rise from the table?To what vertical height will it rise?
3.What is the difference between the wavelengths of red light and blue light?Frequency of red light is 4x10^14 Hz,and the frequency of blue light is 7x10^14 Hz.The speed of light is always 3x10^8.
4.How long would it take a jet travelling at Mach 1.8 to fly a distance of 10500km?the air temperature at this elevation is -4.44°C.
目前先问这些,最好有过程.
分数要在看了答案才能加,因为如果现在加了,等问题关闭时候万一没人回答我的分数就回不来了...
但是我肯定会至少给100分的!
看到了回一个,
...看了你们的回答,就2楼帮了忙了...
ps,我是真的不需要翻译,英语100%明白,.

最好会英文的...1 A turtle is moving with a constant acceleration along a straight ditch.He starts his stopwatch as he passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along the ditch.As he passes the pine tre
第1题：10s 10m说明后半段平均速度为1m/s,故过篱笆时速度为0.8m/s,由此的加速度0.04m/s^2,再由公式s=v^2/2a得所求距离8m
第2题：用能量做.弹性势能0.5kx^2转动能0.5mv^2再转重力势能mgh.0.77m/s;3.1cm
第3题：2楼哥们不错
第4题：声速用c=(rRT)^1/2计算,r为绝热系数可取1.4,R为质量波尔兹曼常数,T绝对温度.声速乘1.8马赫得速度,用距离除以速度即时间.答案约5小时如果没算错的话

最好会英文的...1 A turtle is moving with a constant acceleration along a straight ditch.He starts his stopwatch as he passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along the ditch.As he passes the pine tre 英语翻译不要用网上在线翻译弄出来的,要有英语水平的人翻译,下面两篇文章 1One day,a turtle is climbing.A rabbit sees the turtle.It asks the turtle:“Hi,turtle.What are you doing?” “I’m running.” The turtle says. turtle,的中文是什么turtle是什么意思 a turtle是什么 turtle的意思 turtle 的意思 turtle与tortise的区别 turtle ur的音标是什么? turtle和taller的发音一样吗 turtle这个单词的意思是什么? “乌龟”用英文怎么说是turtle 还是tortoise 初二的完形填空：Once upon a time,some children were playing at seaside when they found a turtle(海龟）.They began to beat the turtle.Just at that time,a young mancame and said to them,''Stop!The children ran____21___quickly.The turtle was Once upon a time,some children were playing at seaside when they found a turtle(海龟).They began to beat the turtle.Just at that thue,a young man came and said to them,Stop! The children ran (1) quickly.The turtle was very thankful and said.Than son of a bitch you a turtle是什么意思 quieter,ant,turtle,and,which,is(?)连词成句快quieter,ant,turtle,and,which,a,an,is(?)连词成句 世界银行为什么会成立?最好是英文的 简单点 at turtle bay 的翻译哪儿有啊 turtle 这个词有什么不好的意思吗