abigailstolp
29.04.2021 •
Physics
. Find the change in thermal energy of a 20-kg wooden chair that warms from 20°C to 55°C if the specific heat of the wood is 700 J/(kg°C).
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Ответ:
The mass of the pelican is 10 kg
Explanation:
Force (Momentum) = Mass of pelican x Acceleration of pelican
50 kg.m. m/s = Mass of pelican x 5 m/s
Divide through by 5 m/s
Mass of pelican = (50 kg.m. m/s) / (5 m/s)
Mass of pelican = 10 kg