Questions Did you notice bubbling of the water when it started to boil? HOW
1.
you explain your observations?
Water bo
This increase
energy surpa
faster, escap
another. This
Heating
kinetic enere
particles me
water into
as bubbles
evaporation
When the water started to boll, what happened to its volume after
2
some time?
Where was the water at the end of the activity? Why do you say so?
3.
4.
highest kinetic energy? Explain your answers using your observations.
In which state do you think the water had its lowest kinetic energy is
Based on your observations, does heating influence the behavior and
physical property of a substance? Why or why not?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0