Which type of foot PPE must you wear if electrical shock is ever a possibility with your job?
1 answer:
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Answer:
a) 6.4 kJ
b) 43.4 kJ
Explanation:
a)
= Heat absorbed = 37 kJ
= Coefficient of performance = 5.8
= Work done
Heat absorbed is given as
=
37 = (5.8)
= 6.4 kJ
b)
= work per cycle required
=
+
= 37 + 6.4
= 43.4 kJ
Reading of the scale will be given as Normal force on the man
So here we can say that
weight of the mas will be
normal force on the man will be given as
now net force is given by Newton's II law
a = 3.33 m/s^2
so elevator is accelerating downwards with an acceleration a = 3.33 m/s^2
Answer:
Explanation:
Kinetic Energy formula:
KE = mv²
m=mass
v=speed
Given:
m=0.25kg
v=2.5m/s
Plug the values in:
KE = 1/2(0.25kg)(2.5m/s)²
KE = 0.78125 J (Joules)