Thanks Doc. I am starting to understand why their approach works for computing energy. But let's say they asked for the power generated by the resistor for the 5 second interval.
Would the answer then be
P=120J/3s= 40W ?
I.e., can we again neglect that 2 second segment where no energy was...
Homework Statement
A 10 Ω resistor carries a current that varies as a function of time as shown. How much energy has been dissipated by the resistor after 5 s?
a. 40 J
b. 50 J
c. 80 J
d. 120 J
Homework Equations
I=dq/dt → dq=Idt → Q=∫Idt
P=∇E/∇t and V=IR (Ohm's Law) so P=IV ⇒...
Homework Statement
Balls A and B of equal mass are floating in a swimming pool, as shown below. Which will produce a greater buoyant force?
a. Ball A
b. Ball B
c. Force will be equal
d. Impossible to determine without knowing the volume of each ball
In the picture given, it is clear that...