You have three magnets of equal size Magnet A is the strongest. When you hold them apart these are the results:
Magnet A and B attract each other in 5 seconds
Magnet A and C attract each other in 3 seconds.
Of the unknown magnets, which is the stronger magnet

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false