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

True or False

Physics
2 answers:
PIT_PIT [208]3 years ago
5 0

Answer:

False

Explanation:

A scientific endeavor is the combination of curiosity and societal needs. A scientist must always strive for his curiosity and his work to bring about technological advances that supersede the needs of society. An example of this is the scientific research used to discover new treatments and medicines to cure or lessen diseases that plague mankind and cause people much pain and suffering. Another example is the use of technology to meet the need for communication between people through smathphones and the internet. This was only possible because the scientific effort through a curiosity decided to diminish a need of society.

Allisa [31]3 years ago
4 0
False?


science can be a motivation out of curiosity AND societal needs.

For example:battery operated  cars, are a curiosity and beneficial to the earths environment
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What is happening if energy input remains constant and voltage remains the same in a circuit, but the current decreases?
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The resistance of the circuit will definitely increase. This can be proved by the Ohm's Law where it is said that the potential difference across a conductor is directly proportional to the current and the proportionality constant is known as the resistance. The law is expressed as V = IR. As we can see, when the voltage remains constant while the current decreases then the resistance will increase.<span />
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3 years ago
Which two factors does the power of a machine depend on?
lianna [129]

The power of a machine depend on two factors are work and time.

Option C

<u>Explanation:</u>

In science, power defined as the amount of work done in a unit time. i.e. delivering work in a rate of time or energy supply, expressed in input of work or transmitted energy divided by the time interval (t) or W/t.

Example: Some work can be done in the long run with a low-power engine or in a short time with a motor with high performance. The equation for power can be given as

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7 0
3 years ago
Parallel light rays with a wavelength of 563 nm fall on a single slit. On a screen 3.30 m away, the distance between the first d
MrMuchimi

Answer:

The width of the slit is 0.4 mm (0.00040 m).

Explanation:

From the Young's interference expression, we have;

(λ ÷ d) = (Δy ÷ D)

where λ is the wavelength of the light, D is the distance of the slit to the screen, d is the width of slit and Δy is the fringe separation.

Thus,

d = (Dλ) ÷ Δy

D = 3.30 m, Δy = 4.7 mm (0.0047 m) and λ = 563 nm (563 ×10^{-9} m)

d = (3.30 × 563 ×10^{-9} ) ÷ (0.0047)

  = 1.8579 × 10^{-6} ÷ 0.0047

  = 0.0003951 m

d = 0.00040 m

The width of the slit is 0.4 mm (0.00040 m).

3 0
3 years ago
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3 years ago
A 50-cm wire placed in an east-west direction is moved horizontally to the north with a speed of 2.0 m/s. the horizontal compone
Strike441 [17]

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Now here we will have magnetic field due to earth and wire is moving in this constant field so induced emf is given by formula

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given that

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now by using the above formula we will have

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EMF = 50 \mu Volts

5 0
3 years ago
Read 2 more answers
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