Answer:
70m/s²
Explanation:
we will use the first equation of Dalton to find it
Answer:
Yes, a mixture can be made up of just elements and no compounds. The elements never experiance a chemical interaction and stay only in physical contact with each other.
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Answer:
η = 58.8%
Explanation:
Work is defined as the force applied by the distance traveled by the body.
![W =F*d](https://tex.z-dn.net/?f=W%20%3DF%2Ad)
where:
W = work [J] (units of joules)
F = force = 294 [N]
d = distance = 5 [m]
![W = 294*5\\W = 1470 [J]\\](https://tex.z-dn.net/?f=W%20%3D%20294%2A5%5C%5CW%20%3D%201470%20%5BJ%5D%5C%5C)
Efficiency is defined as the energy required to perform an activity in relation to the energy actually added to perform some activity. This can be better understood by means of the following equation.
![efficiency = W_{done}/W_{required}\\efficiency = 1470/2500\\efficiency = 0.588 = 58.8%](https://tex.z-dn.net/?f=efficiency%20%3D%20W_%7Bdone%7D%2FW_%7Brequired%7D%5C%5Cefficiency%20%3D%201470%2F2500%5C%5Cefficiency%20%3D%200.588%20%3D%2058.8%25)
The transfer of heat from the Sun is in the form of thermal radiation (also called infrared radiation)
The transfer of heat at the person’s feet is by thermal conduction. During the day the sand will be hot so if you step on it with bare feet there will be conduction of heat to the feet.