juliomeadaptas
02.09.2019 •
Physics
Alarge punch bowl holds 3.95 kg of lemonade (which essentially is water) at 20.0 degrees celsius. a 45 gram ice cube at -10.2 degrees celsius is placed in the lemonade. what is the final temperature of the system? (ignore any heat exchange with the bowl)
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Ответ:
Explanation:
Given
mass of water
Temperature of water is
mass of ice
Temperature of ice
specific heat of water
specific heat of ice
Latent heat of fusion(L)
Heat absorb by water when ice completely converts to water
Q=1.01898+15.3=16.3189 KJ
thus temperature of water will be
Ответ:
p = 1.2 kg-m/s
Explanation:
The question is, "An object of mass 0.5kg is moving along a rectilinear path with constant acceleration of 0.3m / s2. If it started from rest and the magnitude of its momentum in kg * m / s after 8s is".
Mass of the object, m = 0.5 kg
Acceleration of the object, a = 0.3 m/s²
We need to find the momentum after 8 seconds.
We know that,
i.e.
p = mat
So,
So, the momentum of the object is 1.2 kg-m/s.