Aerobic and anaerobic both describe the type of physical activity that includes both cardio and strength training exercises
Answer:16.5 m/s
Explanation:
Given
Velocity of boy
velocity of girl
velocity of ball relative to boy backward
Now We have to find velocity of ball relative to girl
Representing it in vector form
and
therefore velocity of ball relative to girl
Pick A
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Answer:
Displacement current flows in the dielectric material(insulated region)
Explanation:
Firstly a capacitor stores charge when a capacitor is charging (or discharging), current flows in the circuit. Also, there is no charge transfer in the dielectric material in the capacitor which is contradictory to the flow of current. Hence, displacement current is the current in the insulated region due to the changing electric flux.
For this problem, we use the formula for radioactive decay which is expressed as follows:
An = Aoe^-kt
where An is the amount left after time t, Ao is the initial amount and k is a constant.
We calculate as follows:
An = Aoe^-kt
0.5 = e^-k(14.28)
k = 0.05
An = Aoe^-kt
An = 55e^-0.55(57)
An = 1.33x10^-12 g