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sweet-ann [11.9K]
3 years ago
12

Pendulum clocks generally run fast in winter and slow in summer

Physics
2 answers:
Lesechka [4]3 years ago
6 0
False. In the winter, the length of the pendulum decreases and its time period decreases. In the summer, the length of the pendulum increases and its time period increases. 
Harman [31]3 years ago
5 0
If the question is true or false then the answer is true
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If the three spoon touch nothing happens because they are all at room Temperature
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When there is a Crescent Moon in the night sky, how much of the entire Moon’s surface is actually lit by the Sun? Why?
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A grating with 250 grooves mm is used with an incandescent light source. Assume the visible spectrum to range in wavelength from
NeTakaya

The number of orders that one can see the entire visible speed is 5 orders.

<h3>How to calculate the orders?</h3>

From the information given, it should be noted that the grating spacing will be:

d = (1.00 × 10^-4) / 250

d = 4000nm

Therefore, the number of times that are needed to complete the order will be the same as the number of orders which the long wavelength time will be visible. This will be:

= (4000 × sin 90°)/700

= 5.71

Therefore, the maximum orders will be 5.

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7 0
1 year ago
The range of electromagnetic waves placed in a certain order is called the____________.
vova2212 [387]

Answer:

electromagnetic spectrum :)

5 0
3 years ago
A square loop of side length a =2.9 cm is placed a distance b = 1.2 cm from a long wire carrying a current that varies with time
daser333 [38]

Answer:

Explanation:

Magnetic field due to a long wire

B =  (  μ₀ / 4π ) x 2 I / r  ( I is current through the wire )

= (μ₀ Q t ) / ( 2 π r )                    [ I = Q t ]

b )  Magnetic field will change through the length of the square shaped loop . So we shall have to take the help of integration to calculate the flux through the loop.

Flux Φ = ∫ B dA

=∫ (  μ₀ / 4π ) x 2 I / r  dA

10⁻⁷ x 2 I ∫ a dr/r

2 x 10⁻⁷ x Qt x a [ ln (2.9+1.2) / 1.2  ]

4.6 x 10⁻⁷ x 2.9 x 10⁻² t  ln 4.1 / 1.2

16.4  x 10⁻⁹ t

Φ( t ) =  16.4 x 10⁻⁹ t

Induced emf  = dΦ( t ) / dt = 16.4 x 10⁻⁹ v

current

16.4 x 10⁻⁹  / 2.5

= 6.56 x 10⁻⁹

5 0
3 years ago
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