Answer:
Q=0.16*c kJ
Explanation:
Heat transfer and energy changes is related by the equation
Q=mcΔT
where
Q=heat transfer
m=mass of substance
c=specific heat of the material
ΔT= change in temperature
Given
m= 4 kg
c=c
ΔT=40° C
Q=4*c*40
Q=160c
Q=160/1000*c kJ
Q=0.16*c kJ
19.6 N........weight is equal to mass multiplied by gravitational force which is 9.8 m/s2......2 x 9.8 gives 19.6 N
Before entering the closed room, the cert members should assess
the situation first. They should gather information in order to determine if it’s
safe to go or if needed assistance to the current situation. They should consider some probabilities
before they establish the decision and take an action. Especially to the current situation where there is a possibility that the smoke that they smell is coming from the room and the reason may be because there is a fire. Assessing the situation before taking an action immediately is a must, in order to prevent further harm.
Answer:
Explanation:
Angular speed and linear speed is related to each other as
here we know that
now we have
Now we know that moment of inertia of the system is given as
Now angular momentum of the system is given as