A toy, which on an inclined plane expires.ERNST MAX, DE
A block is at rest on an inclined plane. Which of the following forces is not acting on the block? A. Gravitational force B. Frictional force C. Centripetal force D. Normal force 相关知识点: 试题来源: 解析 C。解析:在斜面上静止的物体受到重力,它使物体有沿斜面向下滑动的趋势,所以存在摩擦...
When a block is sliding down a frictionless inclined plane, which of the following physical quantities remains constant? A. Velocity B. Acceleration C. Momentum D. Kinetic E. nergy 相关知识点: 试题来源: 解析 B。解析:在无摩擦的斜面上滑块下滑时,根据牛顿第二定律,加速度a = gsinθ(θ为斜面...
英文的数学题a tower stands at the foot of a plane which is inclined to the horizontal at an angle of 12°.a line 100m in length is measured straight up the incline from the foot of the tower.it is found that at the end of this line the tower subtends an angle of 62°a vertical...
A study of snow avalanche jumping-up phenomenon which strikes an inclined plane is carried out, and which is important to design deflectors and arrestors. The behavior of an avalanche which collided a deflector was recorded at four-second intervals in the field, and jumping height and length wa...
Q.A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on an inclined plane. Both roll down without slipping. Which one will reach the bottom first ?
A smooth inclined plane having an angle of inclination of 30° with the horizontal has a 2.5 kg mass held by a spring which is fixed at the upper end. If the mass is taken 2.5 cm up along the surface of the inclined plane, the tension in the spring reduc
That level of honesty is difficult because it shatters the image each of us has of himself as a Christian. Nevertheless, it is there. God has willed it (even if only permissively) as an effect of the Fall. We have each inherited from Eve a suspicion that God might not totally have ...
英文的数学题a tower stands at the foot of a plane which is inclined to the horizontal at an angle of 12°.a line 100m in length is measured straight up the incline from the foot of the tower.it is found that at the end of this line the tower su
1)a jogger is running around a circular path2)a ball is rolling down an inclined plane3)a train travels 5 miles east before it stops.it then travels 2 miles west4)a ball rises and falls after being thrown straight up from the earth's surface...