Well you could start by imagining the problem in ur head. a second is simply finish homework on time. a third is just you could study more. I mean it works for some nitnfor others. a 4th could be read a lot of physics books!
To solve this problem it is necessary to apply the concepts related to work and power.
Remember that work is defined as the force applied on a body - or exerted by it - to travel a certain distance, and that the power is that energy mentioned to perform that activity in a given instance of time.
Mathematically work is defined as
Where
d = Distance
At this case the acceleration is the same that gravitational acceleration
At the same time we have that power is defined as
Replacing our values we have that the Work done was
Now substituting this value at the Power equation we have
Therefore the power that she is supplying is 100W.
Answer:
a) t =12[s]; b) x = 348[m]
Explanation:
We can solve this problem using the following kinematics equations:
a)
where:
vf = final velocity = 12 [m/s]
vo= initial velocity = 6 [m/s]
a = acceleration = 0.5[m/s^2]
t = time [s]
Now clearing the time t, we have:
b)
We can calculate the displacement for the first 12 [s] then using the equation for the constant velocity we can calculate the other displacement for the 20[s].
The we can calculate the second displacement for the constant velocity:
x = x1 + x2
x = 108 + 240
x = 348[m]
Answer: I think it's D.)All of the above.
Explanation:
Biologists can collect cells, seeds, or sea urchins and put them in a controlled.................