Option 4 ( R2 and R3 ) is the correct answer.
Explanation:
- In the below given diagram, we can see a circuit diagram that has four resistors such as R1, R2, R3, and R4.
- The opening of the circuit is noted as "a" and the ending is noted as "b".
- By observing the above diagram, we can clearly see that R2 and R3 are the pair of resistors that are connected in a parallel manner.
- Where all the other resistors such as R1 and R4 are neither connected in parallel nor in series.
Hence we can conclude that Resistor R2 and R3 are the ones that are connected in parallel.
Translation
A 100kg roller coaster reaches the first hill at 2m / s. the height of the first hill is 20 meters. *Find the total energy* Question added
Answer:
19820 J
Explanation:
Total energy is the sum of kinetic and potential energy
Potential energy is given by mgh
Kinetic energy is given by
The combination will then be and substituting m for 100 Kg and 2 m/s for v then taking g as 9.81 while h is given as 20 m we obtain energy as
Wear a seat belt of course.
<span> = r x F </span>
<span>| τ | = | r x F | = | r | | F | sinΘ </span>
<span>100 = | (0.3)<0, 1, 0> x (F/5)<0, 3, -4> | </span>
<span>5000/3 = | F | | <0, 1, 0> x <0, 3, -4> | </span>
<span>5000/3 = | F | | <-4, 0, 0> | </span>
<span>5000/3 = | F | * 4 </span>
<span>| F | = 1250/3 </span>
<span>| F | = 417 N </span>
<span>Check: </span>
<span>τ = r x F </span>
<span>100<-1, 0, 0> = 0.3<0, 1, 0> x 250/3<0, 3, -4> </span>
<span>100<-1, 0, 0> = 25 ( <0, 1, 0> x <0, 3, -4> ) </span>
<span>100<-1, 0, 0> = 25 ( <-4, 0, 0> ) </span>
<span>100<-1, 0, 0> = 100<-1, 0, 0> </span>
<span>What the other people forgot was that you need the angle from the y-axis, which would be Θ = arctan(O/A) = arctan(z/y) = arctan(-4/3) = -53.1°. Then you take the sine of that to get 0.8. There is more work being done on the z-vector than there is on the y-vector, so the force is distributed (0.6) in the y-direction, and (0.8) in the z-direction (0.6² + 0.8² = 1). </span>