What percentage of a radioactive species would be found as daughter material after five have lives? A. 50%
B. 25%
C. 15%
D. 12.5%
E. 3.125%​

What do you think car designers do if the damage caused by a crash test is too severe?

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is