Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
no 1 you are spot on ball at rest in grass
2 if car stops people keep going newton 1 until the window tries to stop them seatbelts
3 yup to go forward he pushes boat back and may get wet
4 yup f=ma bigger f biggger a further it goes good game golf
5 bike and boy are moving but what about air resistance ?
6 if it's that the heavy mass doesn't go as far as the lighter masss f=ma f same m,a different then yes
d eras and periods
when jerome paddle in flowing river towards east the net speed of jerome will increase
so the net speed of jerome will be given as
now the speed of paul will be same as it is given as he is running on the ground
so here we can say since the speed of jerome is more so he will win the race
now as we know the distance so the time difference is given as
so jerome will reach first and the time difference will be 203.55 s or 3.4 min