Answer:
The effective spring constant of the firing mechanism is 1808N/m.
Explanation:
First, we can use kinematics to obtain the initial velocity of the performer. Since we know the angle at which he was launched, the horizontal distance and the time in which it's traveled, we can calculate the speed by:

(This is correct because the horizontal motion has acceleration zero). Then:

Now, we can use energy to obtain the spring constant of the firing mechanism. By the conservation of mechanical energy, considering the instant in which the elastic band is at its maximum stretch as t=0, and the instant in which the performer flies free of the bands as final time, we have:

Then, plugging in the given values, we obtain:

Finally, the effective spring constant of the firing mechanism is 1808N/m.
Answer:
0.075A
Explanation:
We can consider this system as a circuit, hence we can take the current from the formula for the electric power as follow
I hope this is useful for you
regards
Answer:
Potential
Explanation:
Potential energy is the energy stored while kinetic energy is motional energy.
Potential itself means "having capacity/energy".
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Hope this helped!
<h3>~AH1807</h3>
Answer:
383.6 nJ
Explanation:
The energy stored in a capacitor is given by the formula:

where
C is the capacitance
V is the voltage applied
In this problem, we have
C = 14.8 nF is the capacitance of the capacitor
V = 7.2 V is the voltage
Substituting into the equation, we find:
