第二道!紧急A block of mass m = 2.0 kg is held in equilibrium on an incline of angle θ = 60° by the horizontal force FDetermine the normal force exerted by the incline on the block

第二道!紧急A block of mass m = 2.0 kg is held in equilibrium on an incline of angle θ = 60° by the horizontal force FDetermine the normal force exerted by the incline on the block the roof of a block of the flat was in a bit of mas the roof of a block of flats这里的block作什么解释? on the roof of a block of flats 可以改成on the roof of a flats' block吗 Is there a f( ) in front of block block of flats block model of learning Block A has a mass of 3 kg and Block B has a mass of 5 kg.Just before colliding,Block A has a speed of 4 m/s and Block B is at rest(0m/s).After the collision,Block B has a speed of 3m/s in the same direction that Block A was initially.What is the spe 英语 词组 a block of apartment 和 a office block中文 解释、***（一样吗?）***（block取“ 大楼 大厦 ”之意）(不要词霸 之类的翻译 ) 英语翻译A Block 11th Flr Flat A-7 Chung King Mansion,36-44 Nathan Road,Tsim Sha,紧急! 请各位帮忙解一下这道英文物理题A 9 g bullet is fired into a 257 g block thatis initially at rest at the edge of a frictionlesstable of height 1.8 m. The bullet remains inthe block, and after impact the block lands2.3 m from the bo block a vote a block of flats (Br) =a bolck of ____ (Am) change of block 什么意思 block number is out of Westerners sometimes call it the cheese of Asia ,because it looks like a block of cheese a block of flats一栋公寓,flat为什么是复数a block of flats一栋公寓,flats为什么是复数?