一个孔通过世界
A Hole Through the World
一个孔通过世界
Yīgè kǒng tōngguò shìjiè
Imagine that you could drill a perfectly smooth, frictionless hole all the way through the Earth, and that inside the hole it was a perfect vacuum. Also assume that the Earth has a uniform density. If you dropped a ball of mass m in the hole, how much time would it take until it came out on the other side?
假设你可以钻一个完美流畅无摩擦孔通过地球一路. 在孔里是真空。也假设地球的密度均匀的。如果你下降 质量为m的球成孔,多少时间需要到达对方？
Jiǎshè nǐ kěyǐ zuān yīgè wánměi liúchàng, wú mócā kǒng tōngguò dìqiú yīlù. Zài kǒng li shi zhēnkōng. Yě jiǎshè dìqiú de mìdù jūnyún de. Rúguǒ nǐ xiàjiàng zhìliàng wèi m de qiú chéng kǒng, duōshǎo shíjiān xūyào dàodá duìfāng?
Search from various English teachers...
Corrections · 1
0
一个孔通过世界的一个洞
A Hole Through the World
一个孔通过世界的一个洞
Yīgè kǒng tōngguò shìjiè
Imagine that you could drill a perfectly smooth, frictionless hole all the way through the Earth, and that inside the hole it was a perfect vacuum. Also assume that the Earth has a uniform density. If you dropped a ball of mass m in the hole, how much time would it take until it came out on the other side?
假设你可以钻一个完美流畅无摩擦的孔洞穿过地球. 在洞里是真空。也假设地球的密度是均匀的。如果你下降 向洞里放一个质量为m的球成孔,这个球需要多少时间需要到达对方（地球的）另一边？
Jiǎshè nǐ kěyǐ zuān yīgè wánměi liúchàng, wú mócā kǒng tōngguò dìqiú yīlù. Zài kǒng li shi zhēnkōng. Yě jiǎshè dìqiú de mìdù jūnyún de. Rúguǒ nǐ xiàjiàng zhìliàng wèi m de qiú chéng kǒng, duōshǎo shíjiān xūyào dàodá duìfāng?
Want to progress faster?
Join this learning community and try out free exercises!
Don’t miss out on the opportunity to learn a language from the comfort of your own home. Browse our selection of experienced language tutors and enroll in your first lesson now!
Start Learning Today
