Two common terms for a decrease in velocity are
2 answers:
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Answer:
6.25 m/s
Explanation:
Given parameters
Initial mark = 65
Final mark = 15
time taken = 8s
Unknown:
Velocity of the runner = ?
Solution:
Velocity is the displacement divided by time;
Velocity =
Displacement = Initial mark - final mark = 65 - 15 = 50m
Now, insert the parameters and solve;
Velocity = = 6.25m/s
Answer:
153.0815W/m.K
Explanation:
Heat transferred in phase is changed is expressed as:
(m-mass, Q-heat, L-Latent heat of phase change)
Latent heat is the heat required to change the phase of 1kg of the material.
#The rate of heat flow(by conduction) per unit time:
#Heat flowing through melting ice.
To solve for k:
The thermal conductivity k of the metal is 153.0815W/m.K