Physics
03.07.2022 05:53
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Asmall 22 kilogram canoe is floating downriver at a speed of 2 m/s. what is the
Asmall 22 kilogram canoe is floating downriver at a speed of 2 m/s. what is the canoe's kinetic energy
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jahmya123
4,9(61 marks)
A student on a raft floating behind the canoe says the canoe has NO kinetic energy.
A teacher standing on the riverbank when the canoe floats by says it has 44 joules of KE.
They're both correct.
A teacher standing on the riverbank when the canoe floats by says it has 44 joules of KE.
They're both correct.
pr47723
4,8(50 marks)
0.00020120.0002192
Explanation:
Using apparent = mass of liquid expelled/mass of liquid remaining × temp. rise
Mass expelled: 250-248.5=1.5g
Mass remaining =248.5g
Temp. rise= 60-30= 30ºc
= 1.5/248.5×30=0.0002012
Using real= apparent + cubic expansivty
Cubic= 3 × linear expansivty
= 3×0.000006=0.000018
0.0002012+0.000018=0.0002192
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