Answer:
the mass of water is 0.3 Kg
Explanation:
since the container is well-insulated, the heat released by the copper is absorbed by the water , therefore:
Q water + Q copper = Q surroundings =0 (insulated)
Q water = - Q copper
since Q = m * c * ( T eq - Ti ) , where m = mass, c = specific heat, T eq = equilibrium temperature and Ti = initial temperature
and denoting w as water and co as copper :
m w * c w * (T eq - Tiw) = - m co * c co * (T eq - Ti co) = m co * c co * (T co - Ti eq)
m w = m co * c co * (T co - Ti eq) / [ c w * (T eq - Tiw) ]
We take the specific heat of water as c= 1 cal/g °C = 4.186 J/g °C . Also the specific heat of copper can be found in tables → at 25°C c co = 0.385 J/g°C
if we assume that both specific heats do not change during the process (or the change is insignificant)
m w = m co * c co * (T eq - Ti co) / [ c w * (T eq - Tiw) ]
m w= 1.80 kg * 0.385 J/g°C ( 150°C - 70°C) /( 4.186 J/g°C ( 70°C- 27°C))
m w= 0.3 kg
Answer:
Love yourself, that's what you need to do. In order to be content, let yourself! Treat you right.
Answer: question 1 is b I believe
Explanation:
every action has an opposite reaction
The time in which the animal B overtake animal A according to the motion map is at 2 seconds.
<h3>What is a Motion map?</h3>
This is referred to as one-dimensional plots built off of a position line and depicts velocity and acceleration.
The time in which Animal B is ahead of animal A is at 2 seconds which therefore makes it the most appropriate choice.
Read more about Motion map here brainly.com/question/5064705
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Answer:
88km E
Explanation:
25 km is added already
then if we take the formula of speed(V)
V=d/t
and rearrange it to subject d (distance)
d= V x t
we get
d= 42km/h x 1.5hrs
we get
63 km
now if we add the already travelled 25 km to this additional distance
63km + 25km = 88km
Thus the final distance traversed by the ship from its origin is
88km E
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