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Karo-lina-s [1.5K]
3 years ago
8

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 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 room's lights provide the same resistance.
D) He should wire the room with the most lights directly to the circuit breaker box.
Physics
2 answers:
Naily [24]3 years ago
8 0
So the answer is B) he should wire each room in parallel. This is because when the bulbs are in parallel if one part of the parallel circuit is broken (eg when you switch a light off) then the current can still flow to all the other bulbs, meaning they stay turned on. Hope this helps :)
Anika [276]3 years ago
8 0

Answer:

the answer is B

Explanation:

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You punt a ball straight up at 20 m/s. What is the balls hangtime
Natalija [7]

The hang time of the ball is 4.08 s

Explanation:

The ball is in free fall motion: this means that it is acted upon gravity only, so its acceleration is the acceleration of gravity,

a=g=-9.8 m/s^2

downward (the negative sign refers to the downward direction).

Since this is a uniformly accelerated motion, we can solve the problem by using the following suvat equation:

v=u+at

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

First we calculate the time it takes for the ball to reach the maximum height, where the velocity is zero:

v = 0

Substituting:

u = +20 m/s

a=-9.8 m/s^2

we find t

t=\frac{v-u}{a}=\frac{0-20}{-9.8}=2.04 s

The motion of the ball is symmetrical, so the total time of flight is just twice the time needed to reach the maximum height, therefore:

T=2t=2(2.04)=4.08 s

Learn more about free fall:

brainly.com/question/1748290

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4 0
3 years ago
Which levels of government establish and implement educational requirements for minors
romanna [79]

Answer:

Federal Role in Education is primarily a State and local responsibility in the United States. It is States and communities, as well as public and private organizations of all kinds, that establish schools and colleges, develop curricula, and determine requirements for enrollment and graduation.

Explanation:

The Role of Public Education in Supporting American Democracy. Since the founding of public education in the United States, public schools have been charged not only with giving future workers skills for the private marketplace, but also with preparing students to be citizens in a democracy.

5 0
3 years ago
Work/Power problem with friction
Kisachek [45]

Answer:

This is the formula

Explanation:

−(0.54 m/s)2

2(−1.67 m/s2)

so this is the step by taking the mean of the maximum value of friction with the minimum value you can get the average force of friction

3 0
3 years ago
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You’re speeding at 85 km/hr when you notice that you’re only 10 m behind the car in front of you,
solmaris [256]
Your position in meters will, measured relative to the starting point of the car behind you, be 
x1(t) = 10 + 23.61 t - 1/2 4.2 t^2 
his position will be 
x2(t) = 16.67 t 
Hence at any time the separation s(t) will be 
s(t) = x1(t) - x2(t) = 10 + 6.94 t -2.1 t^2 
Now I assume you mean that you will decelerate UNTIl you are driving at the legal speed limit (60 km/h). That will take you: 
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s(1.65) = 10 + 6.94 *1.65 -2.1 (1.65)^2 = 15.73 meters. 
Hence you will NOT collide. The 1.65 s you calculated was the time needed to brake to the speed of 60 km/h. 
7 0
3 years ago
A rock is dropped from a tall building. After falling for three seconds what is its final velocity?
evablogger [386]
I THINK v = 9.8 is the final velocity on impact. Hope I helped
6 0
3 years ago
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