A lump of lead with a mass 0.5kg is dropped from a height of 20m onto a hard surface. It does not rebound but remains there for a long time.

A) what is the increase in heat
B)what is the increase in internal energy
C)what is the increase in temperature

22 answers

potential energy --> kinetic energy --> heat energy

energy = m g h (in Joules)

energy / specific heat = temp change

A) and B) look like the same thing ... energy
heat 0 and internal energy 100 b/c u=w and also at q is 0 at mekhanical work
q is 34 ande internal energy 56
0, 100, 0.0016
Q is 34
∆Q=100 J,potential energy =mgh=>∆Q
∆U= ∆Q
∆W=0
∆T=1.56 K
alump of lead with mass 0.50kg isdropped from aheight of 20m on to hard surface it does not rebound but remains there at rest for along period of time
A lump of lead with mass 0.50 kg is dropped
from a height of 20 m onto a hard surface. It
does not rebound but remains there at rest for
a ∆Q, (b) ∆W and (c) ∆U for the lead during
this process?long period of time.
∆Q, (b) ∆W and (c) ∆U for the lead during
this process?
What is the temperature change in the lead
immediately after the impact? [specific
heat capacity of lead = 128 kJ/kg K]
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DAMBI DOLO
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A lump of lead
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