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kobusy [5.1K]
4 years ago
13

Tech A says parallel circuits are like links in a chain. Tech B says total current in a parallel circuit equals the sum of the c

urrent flowing in each branch of the circuit. Who is correct?
Physics
1 answer:
rosijanka [135]4 years ago
4 0

Answer: Only Tech B is correct.

Explanation:

First, tech A is wrong.

The circuits that can be compared with links in a chain are the series circuit, and it can be related to the links in a chain because if one of the elements breaks, the current can not flow furthermore (because the elements in the circuit are connected in series) while in a parallel circuit if one of the branches breaks, the current still can flow by other branches.

Also in a parallel circuit, the sum of the currents of each path is equal to the current that comes from the source, so Tech B is correct, the total current is equal to the sum of the currents flowing in each branch of the circuit.

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A locomotive is pulling 8 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (wi
nikitadnepr [17]

Answer:106560 N

Explanation:

Given

Let Tension between  2 and 3 car be T_{23} and between 3 &4 is T_{34}

T_{23}-T_{34}=ma

mass of freight car =37,000 kg

acceleration of car=0.48 m/s^2

T_{34} is accelerating all freights behind 3

therefore

T_{34}=5\times ma

T_{34}=5\times 37000\times 0.48=88,800 N

Thus

T_{23}=T_{34}+ma

T_{23}=88,800+37000\times 0.48=88,800+17,760=106560 N

4 0
4 years ago
A rubber duck sat is floating on the surface
lana66690 [7]

The other force that must be acting on the duck is upthrust of 10 N.

The given parameters;

  • <em>weight of the rubber duck, W = 10 N</em>

<em />

When the weight of the object is equal to the upthrust, the apparent weight will be zero and the object will float in the liquid. This is known as principle of floatation.

Since the given weight of the rubber duck is 10 N, then the <em>upthrust</em> on the duck will be 10 N to enable the duck float on the water.

Thus, the other force acting on the duck is upthrust of 10 N.

Learn more here:brainly.com/question/24777505

7 0
2 years ago
What force will give a 40.0 kg grocery cart an acceleraticn of 2.4 m/s^2?
zepelin [54]

Answer:

force is 96 N

Explanation:

given data

mass = 40 kg

acceleration = 2.4 m/s²

to find out

force

solution

we know force is mass time acceleration so

we will apply here force formula that is express as

force = m × a   ..............1

here m is mass and a is acceleration so

put here value in equation 1 we get force

force = 40 × 2.4

force = 96

so force will be 96 N

5 0
3 years ago
Which of the following equations describe the 2nd law of motion?
Paladinen [302]

Answer:

b. force= mass *acceleration

Explanation:

7 0
3 years ago
Read 2 more answers
What acceleration is produced by a <br> force of 2000 N and 1000 kilogram car
Vanyuwa [196]
Force = mass * acceleration
F = ma

We can start by substitution. 
F = 2000 Newtons
Mass = 1000 kg

Divide to figure out the acceleration

2000/1000 = 2 m/s2

the answer would be that the acceleration measures 2 m/s2
3 0
3 years ago
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