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igor_vitrenko [27]

4 years ago

9

A house is wired so that one electrical source comes to a room but many outlets and lights work from that source. When one light

is turned off, the other lights in the room do not also go off. How is the room wired?
A. Parallel
B. Series

1 answer:

Lyrx [107]4 years ago

6 0

Its parallel, did this help?

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Billiard ball A strikes another ball B of the same mass, which is at rest, such that after the impact they move at angles ΘA and

Drupady [299]

Answer:

7.6427m/s

Explanation:

Given: $v_a=4.7m/s, \theta_a=33.0\textdegree and \ v_b=4.5m/s$

#Applying the conservation of momentum along the x-axis: $mv_i=mv_acos\theta_a+mv_bcos\theta_b$

#And along y-axis:

$0=-sin\theta_a+mv_bsin\theta_b$

#Solving for $\theta_b$ :

$sin\rheta_b=\frac{v_a}{v_b}sin\theta_a=4.7/4.5\times sin33.0\textdegree\\=0.5688\\\therefore \theta_b=34.67\textdegree$

#By substitution in the x-axis equation:

$v_i=4.7cos 33.0\textdegree +4.5cos 34.67\textdegree\\=7.6427m/s$

Hence the original speed of the ball before impact is 7.6427m/s

4 0

3 years ago

What is sin for the given right triangle?

Rzqust [24]

Sin of a right triangle is opposite divided by hypotenuse
in this case, that is 5/8.6 = 0.581395349<span>
</span>
you can easily remember the trig functions with this acronym:
SOH-CAH-TOA

S: Sine
O: Opposite
H: Hypotenuse

C: Cosine
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H: Hypotenuse

T: Tangent
O: Opposite
A: Adjacent

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3 years ago

During which two phases would surfer’s most likely benefit

Strike441 [17]

Answer:

d

Explanation:

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3 years ago

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The diagram below shows the movement of matter in a portion of the water cycle.

Alisiya [41]

Answer:

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3 years ago

a block suspended from a spring. The spring is stretch 0.5 m. If the spring constant is 500 N/m, what is the weight of the block

zhenek [66]

Answer:250N

Explanation:

Spring constant(K)=500N/m

extension(e)=0.5m

Weight=k x e

Weight=500 x 0.5

Weight=250N

5 0

4 years ago