What happens to the liquid in a thermometer when it is moved from cold water to boiling water?
2 answers:
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Answer:
0.91 J
Explanation:
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
For the lemming in this problem, when he jumps, we have:
m = 0.0780 kg is the mass
v = 4.84 m/s is the speed
Substituting into the equation, we find:
Answer:
the distance of the top of the window below the windowsill from which the flowerpot fell is 0.31 m
Explanation:
given information:
time, t = 0.420 s
height, h = 1.9 m
the the vertical motion equation:
h = t +
where
h = height (m)
= initial velocity (m/s)
t = time (s)
g = gravitational force (9.8 )
first we calculate the velocity of the flowers pot when it reaches top window
h = t +
1.9 = (0.42) + (
)
= (1.9 - (
))/0.42
= 2.47 m/s
now we can find the distance of the windowsil
+ 2gh
v = 0, thus
2gh = -
h = -/2g
= / (2 x 9.8)
= 0.31 m
Answer:
The object's maximum speed remains unchanged.
Explanation:
The speed of a particle in SHM is given by :
Maximum speed is,
If A' = 2A and T' = 2T
So, the maximum speed of the object remains the same i.e. it remains unchanged. Hence, this is the required solution.