Questions and answers by

Flavia

Questions (2)

Express 1728 and 2025 in terms of their prime factors. Hence evaluate ³√1728/√2025
1. 1 answer
2. 413 views
During a spontaneous chemical reaction, it is found that δSsys < 0. This means __________a. δSsurr < 0 and its magnitude is <
1. 1 answer
2. 1,224 views

Xylem cells are part of the vascular system. They are dead at maturity. The water and dissolved ions flow through them and put pressure on them to collapse, so they require strong structural proteins to stay open. Sclerenchyma cells are a support element
a) Use delta x= V * delta t 43 m= 22 m/s*cos 67 *delta t delta t= 5.00 s b) Use delta x= Vo*delta t + 1/2 * a* delta t ^2 delta x= 22 m/s*sin(-67)(5.00s)+ 1/2 *-9.81 m/s^2 * (5.00s)^s delta x= -223.88m Since the rock went down 223.88m, the cliff is 223.88
For d) you need to use equation: delta p (or impulse)= Average Force * delta t, however, you know neither delta t nor the average force, so you have to find delta t using kinematics. Vf^2 - Vo^2= 2a*deltax. 0-(6.7 m/2)^2=2*a*.4m a=-56.1125 m/s^2 delta v= a

Ask a New Question