Current = Power/Voltage. 70W/120v= 0.583 Amps.
Since a typical smelt has 1.04 ppm of PCB is great lakes. So
the amount of PCB in a smelt in great leak can be calculated by multiplying the
mass of smelt by the pcbs present in a smelt
225 g * ( 1.04/100000) = 2.34 x10^-4 g pcbs
Answer:
a. 1,188 N
b. 1.836
Explanation:
The computation is shown below:
a. For horizontal force, first we need to find out the circular path radius which is shown below:
As we know that
= 8m
Now the horizontal force is
where,
m = 66 kg
v = 12 m/s
and r = 8 m
Now placing these values to the above formula
So, the horizontal force is
= 1,188 N
b. Now the ratio of force to the weight of skater is
= 1.836
The turns ratio is the factor that determines voltage andcurrent. In order to have the same current across the resistorin the primary as the resistor in the secondary, then:--N(p) = Primary turnsN(s) = Secondary turnsR(2) = Primary resistorR(1) = Secondary resistor--R(2)/R(1) = N(p)/N(s)R(2) = R(1)*(N(p)/N(s))--If arbitrary values are plugged in, you will see that this step up transformer will require 2x the resistance required in the secondary, R(1), to obtain the same current. Thus R(2) will be 1/2 the value of R(1). This is due to the stepped up voltage in the secondary.
Yes. Only a perpendicular component produces a torque.
