Infact I would have written: "let a car with speed A km/h..." Using numbers as you say seems very student-confusing for me, don't know if that's a good pedagogical way to teach physics problems (but are you talking of US high schools? in Italy it's not so). -- ...
音频列表 1 2.3 Understanding acceleration 592022-09 2 2.4 Calculating speed and acceleration 532022-09 3 3 Forces and motion-Introduction 322022-09 4 3 Forces and motion-Key Words 342022-09 5 3.1 We have lift-off 522022-09 6 3.2 Mass, weight and gravity 232022-09 7 3.3 Falling and ...
Tags Average Average speed Speed In summary, the problem is asking for the average speed (in km/h) of a road trip where the driver traveled at (48.0+A) km/h for the first 54.0 km and (43.0-B) km/h for the remaining 86.0 km. The values of A and B are individual...
A floor polishing disk rotates at an angular speed of60rad/sand has a moment of inertia of0.18kg⋅m2. Calculate the angular momentum of the floor polishing disk. 11.8kg⋅m2s 10.8kg⋅m2s 12.8kg⋅m2s 13.8kg⋅m2s Get help with these problems ...
Remark that the case v in = V in , where v out vanishes, may be regarded as a generalization of a notion of a Galilean Cannon [31]: a system of balls that arrives at the wall with the same speed and transfers all the energy to the far-most one in the end. 4. Physical Realizati...
Remark that the case v in = V in , where v out vanishes, may be regarded as a generalization of a notion of a Galilean Cannon [31]: a system of balls that arrives at the wall with the same speed and transfers all the energy to the far-most one in the end. 4. Physical Realizati...
An object of mass 6.6×1012 kg approaches the Sun from a faraway galaxy with a certain speed. When the object is approximately 8.1×1010 m distant from the Sun, compute the amount of work done by the Sun on the object. The mass of the Sun can be taken as 1.98×1030 kg. 18....
Eshelby has shown that a glide dislocation can move without radiation of energy at 2 of the shear wave speed. It is also known that the same velocity plays... H Gao,Y Huang,P Gumbsch,... - 《Journal of the Mechanics & Physics of Solids》 被引量: 492发表: 1999年 Shear dominated tra...
By contrast, Newton's method is slower but more reliable. A hierarchical algorithm, in which recourse is made to Newton's method if Gauss-Seidel iteration fails, is shown to combine the speed of Gauss-Seidel and the reliability of Newton. The hierarchical solver has been incorporated into the...
YK Malikov,VG Lisienko - 《Journal of Engineering Physics》 被引量: 3发表: 1981年 A comparison of controllers for improving the time response of NiTi wires This paper presents a comparative theoretical study of the performance of a set of controllers for improving the speed of actuators based ...