The amount of energy transferred is 4320 J
Explanation:
Power is defined as the amount of energy transferred per unit of time:
![P=\frac{E}{t}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7BE%7D%7Bt%7D)
where
P is the power
E is the amount of energy transferred
t is the time
In this problem, we have:
P = 720 W is the power
t = 6 s is the time elapsed
Solving for E, we find the energy transferred needed to push the box:
![E=Pt=(720)(6)=4320 J](https://tex.z-dn.net/?f=E%3DPt%3D%28720%29%286%29%3D4320%20J)
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It is TRUE. The pivot point of a lever is called the fulcrum .
Answer: acceleration is time derivative of speed.
When v(t) = 60 + 0.50t, is a(t) = v' (t) = 0.50 (m/s²)
Answer:
B
Explanation:
Look for the one with an x coordinate of two .... answer B
Groups are vertical columns in the Periodic Table and they contain elements with similar properties. One characteristic is that each member of a group has the same number of electrons in the outer level. This holds true for groups 1-7. Because each element has the same number of electrons in the outer shell, they tend to have similar properties(second characteristic).