Answer:
The rate the radius of the balloon shrinking at the moment the radius is 5 centimeters is 0.1783 cm/s
Explanation:
Here we have
dV/dt = 56 cm³/s

When the radius is 5 cm we have
Therefore,
From which,


The rate the radius of the balloon shrinking at the moment the radius is 5 centimeters = 0.1783 cm/s.
Answer:
17640
Explanation:
Power = workdone/time
Power = (force x displacement)/time
Power = (mg x 60)/60
Power = (1800 x 9.8 x 60)/60
=> power = 17640 watt
Answer: D (doubled)
According to ohm's law
I = V/R ,
V = IR ; R = constant and V is doubled
From the equation
V is directly proportional to the current, and it is given that R is constant ;
2V = 2I. R since R = constant
Hence I is doubled.