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DanielleElmas [232]
3 years ago
5

Leonard designed a parallel circuit to light two lightbulbs. But his circuit doesn't work. Which two items in the circuit must b

e addressed for the lightbulbs to light as planned?
Physics
2 answers:
olga_2 [115]3 years ago
4 0

Answer:

1. The source of power

2. Connection and accessories including, the power cable condition, switches and light bulbs

Explanation:

The items listed above should be tested with a suitable probe and any identified defective component should be replaced

olya-2409 [2.1K]3 years ago
3 0
The switch and the first lightbulb
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How much heat is necessary to warm 500g of water from 20°c to 65°c​
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8 0
2 years ago
A source at rest emits light of wavelength 500 nm. When it is moving at 0.90c toward an observer, the observer detects light of
Vesna [10]

Answer:

The observer detects light of wavelength is 115 nm.

(b) is correct option

Explanation:

Given that,

Wavelength of source = 500 nm

Velocity = 0.90 c

We need to calculate the wavelength of observer

Using Doppler effect

\lambda_{o}=\sqrt{\dfrac{1-\beta}{1+\beta}}\lambda_{s}

Where, \beta=\dfrac{c}{v}

\lambda_{o}=\sqrt{\dfrac{c-0.90c}{c+0.90c}}\times500\times10^{-9}

\lambda_{o}=115\ nm

Hence, The observer detects light of wavelength is 115 nm.

8 0
3 years ago
If it takes 50.0 seconds to lift 10.0 Newtons of books to a height of 7.0
Ilya [14]
Work of the force = 10 N

Time required for the work = 50 sec

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We are given with the value of work and time in the question.

Substitute the values in the formula of power and then you'll get the power required.

We know that,

w = Work

p = Power

t = Time

By the formula,

Given that,
Work (w) = 7 m = 70 Joules
Time (t) = 50 sec
Substituting their values,

p = 70/50

p = 1.4 watts

Therefore, the power required is 1.4 watts.

Hope it helps!
3 0
2 years ago
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zheka24 [161]
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3 years ago
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