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tester [92]
3 years ago
6

An electrician is creating a wiring plan for a small house.He needs to create a plan that will allow the homeowners to turn off

lights in one room without turning the light off the lights in another what should he do to assure that each room's lights function independently of one another?
A.)He should wire each room in series with the next
B.)He should wire each room in parallel with the next
C.)He should make sure each rooms light provide the same resistance
D.)He should wire the room with the most lights directly to the circuit breaker box.
Physics
2 answers:
rusak2 [61]3 years ago
8 0

Answer:

B.

Explanation:

Naya [18.7K]3 years ago
7 0

Answer: B.)He should wire each room in parallel with the next

Explanation:

The voltage across each component connected in parallel is same. When a component in a parallel circuit, it does not effect working of other components. On the other hand, when a component in series circuit is switched off, whole circuit breaks and other components stop working as well. Thus, in order to create a plan that will allow the homeowners to turn off lights in one room without turning the light off the lights in another, he should wire each room in parallel with the next. Option B is correct.

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k0ka [10]
Pressure is given by:
P=F/A
force=1200*10=12000 N
Area=pi*r^2=3.14*0.15^2
=0.07065 m^2
Thus;
P=12000/0.7065
P=169,851.38 N/m^2
but
1 N/m^2=1 Pa
thus our pressure is:
169,851.38 Pa
3 0
3 years ago
Read 2 more answers
A 62 pound box is on an incline. Determine the minimum force P that would result in the box starting to slide up the incline. (i
Anon25 [30]

Answer:

F > W * sin(α)

Explanation:

The force needed for the box to start sliding up depends on the incline (α).

The external forces acting on the box would be the weight, the normal reaction and the lifting force that is applied to make it slide up.

These forces can be decomposed on their normal and tangential (to the slide plane) components.

The weight will be split into

Wn = W * cos(α) (in normal direction)

Wt = W * sin(α) (in tangential direction)

The normal reaction will be alligned with the normal axis, and will be equal to -Wn

N = -W* cos(α) (in normal direction)

To mke the box slide up, a force must be applied, that is opposite to the tangential component of the weight and at least a little larger

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8 0
3 years ago
A person is pulling their 20 kg luggage using the luggage handle. The handle is at an angle of 56 degrees above the horizontal.
rusak2 [61]

Answer:

The answer to your question is:  a = 1.99 m/s²

Explanation:

Data

mass = 20 kg

angle = 56°

Force = 71 N

horizontal acceleration = ?

Process

Find the horizontal force

                                           cos Ф = adjacent side / hypotenuse

                                          adjacent side = hypotenuse x cosФ

                                          adjacent side = 71 x cos 56

                                          a.s. = 39.70 N

Newton's second law

                                  F = ma

                                  a = F/m

                                 a = 39.7 / 20

                                  a = 1.99 m/s²

4 0
3 years ago
Imagine that you’re observing a collision. Which action would allow you to determine whether the collision is inelastic?
Thepotemich [5.8K]

The answer is B;) in plato

3 0
3 years ago
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What is number 30,31 in this picture?
Maslowich
On question 30, that is a displacement- time graph (DT). On this type of graph the gradient is equal to the velocity. B has the steepest gradient, then A and finally C

Now velocity is a vector quantity so it has a direction and speed ( speed doesn't have a fixed direction.)

on the DT graph im going to assume that movement B is a positive velocity with A and C being negative. 
So by ranking these: A is the most negative, C is the least negative and B has to be the greatest as it is the only positive velocity. 

Q31, The same type of graph is present, by looking at the gradients we can rank the largest and smallest velocities- speeds in the case of the question. 
i'll skip my working out as its the same as before:

C, B, A and then D

the same idea as on Q30 applies to Q31 part b, 

D,C,B then A 
6 0
3 years ago
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