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OLEGan [10]
4 years ago
12

Imagine you’re an engineer making a string of battery powered holiday lights. If a bulb burns out current cannot flow through th

at bulb any linger (like if the wire at the bulb had been cut) . Figure out how to hook up 2 light bulbs and a battery so that when one bulb burns out (or disconnected) the other stays lit.
Physics
1 answer:
Anit [1.1K]4 years ago
4 0

Answer:

The 2 light bulbs can be connected in parallel to each other to avoid disconnection when one bulb burns out.

Explanation:

The parallel connection is required not series. A parallel connection is the connection of electronic components (e.g bulbs, LED, resistors, capacitors etc) in such a way that the same voltage is supplied across the ends of the components.  While in a series connection, the components are connected to each other end-to-end.

As regard the question, parallel connection ensures that the brightness any of the bulbs is not affected with respect to the other bulbs. And other bulbs continue to function when any burns out. The 2 light bulbs should be connected in parallel to the baterry to avoid disconnection of all the bulbs.

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A hiker leaves her camp and walks 3.5 km in a direction of 55° south of west to the lake. after a short rest at the lake, she hi
3241004551 [841]

Let's choose east as positive x-direction and south as positive y-direction. We can resolve the two displacement along these two axes:

- Displacement 1 (3.5 km, 55^{\circ} south of west

d_{1x}=-(3.5 km)( cos 55^{\circ})=-2.01 km

d_{1y}=(3.5 km)( sin 55^{\circ})=2.87 km

- Displacement 2 (2.7 km, 16^{\circ} east of south

d_{2x}=(2.7 km)( sin 16^{\circ})=0.74 km

d_{1y}=(2.7 km)( cos 16^{\circ})=2.60 km

So, the total components on the two directions are

d_x = -2.01 km+0.74 km=-1.27 km

d_y=2.87 km+2.60 km=5.47 km

And the magnitude of the hiker's resultant displacement is

d=\sqrt{(1.27 km)^2+(5.47 km)^2}=5.6 km

8 0
3 years ago
Read 2 more answers
Please help! Will give a lot of points
krek1111 [17]
Answer:

Chemical and Biological weathering.

Explanation:

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As a mercury atom absorbs a photon of
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This is the perfect answer.
8 0
3 years ago
On the sonometer shown below, a horizontal cord of length 5 m has a mass of 1.45 g. When the cord was plucked the wave produced
Korolek [52]

Answer:

(a) T = 0.015 N

(b) M = 1.53 x 10⁻³ kg = 1.53 g

Explanation:

(a) T = 0.015 N

First, we will find the speed of waves:

v =f\lambda

where,

v = speed of wave = ?

f = frequency = 120 Hz

λ = wavelength = 6 cm = 0.06 m

Therefore,

v = (120 Hz)(0.06 m)

v = 7.2 m/s

Now, we will find the linear mass density of the coil:

\mu = \frac{m}{l}

where,

μ = linear mass density = ?

m = mass = 1.45 g = 1.45 x 10⁻³ kg

l = length = 5 m

Thereforre,

\mu = \frac{1.45\ x\ 10^{-3}\ kg}{5\ m}\\\\\mu = 2.9\ x\ 10^{-4}\ kg/m

Now, for the tension we use the formula:

v = \sqrt{\frac{T}{\mu}}\\\\7.2\ m/s = \sqrt{\frac{T}{2.9\ x\ 10^{-4}\ kg/m}}\\\\(51.84\ m^2/s^2)(2.9\ x\ 10^{-4}\ kg/m) = T

<u>T = 0.015 N</u>

<u></u>

(b)

The mass to be hung is:

T = Mg\\\\M = \frac{T}{g}\\\\M = \frac{0.015\ N}{9.8\ m/s^2}\\\\

<u>M = 1.53 x 10⁻³ kg = 1.53 g</u>

4 0
3 years ago
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