Tính gia tốc chuyển động trong mỗi trường hợp sau: a, Xe rời bến chuyển động thẳng nhanh dần đều sau khi đi được 1 phút đạt 54km/h
b, Một ô tô đang chuyển động với vận tốc 36km/h thì hãm phanh và chuyển động thẳng chậm dần đều sau 10s thi dừng hẳn.

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves