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3 years ago

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?

Physics

1 answer:

vivado [14]3 years ago

8 0

It'll last 20 hours. If it travels 110 miles in one hours, 110 times 20 equals 2,200.

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zhenek [66]

Explanation:

ans is equal to 504j* 23 m* 10 ms

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3 years ago

A transmission diffraction grating with 420 lines/mm is used to study the light intensity of di event orders (n). A screen is lo

Goshia [24]

Answer:

Explanation:

Diffraction grating is used to form interference pattern of dark and bright band.

Distance between adjacent slits (a ) = 1 / 420 mm

= 2.38 x 10⁻³ mm

2.38 x 10⁻⁶ m

wave length of red light

= 680 x 10⁻⁹ m

For bright red band

position x on the screen

= n λD / a , n = 0,1,2,3 etc

D = distance of screen

putting n = 1 , 2 and 3 , we can get three locations of bright red band.

x₁ = λD / a

= 680 x 10⁻⁹ x 2.8 / 2.38 x 10⁻⁶

= .8 m

= 80 cm

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= 2 λD / a

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= 160 cm

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= 3 λD / a

= 3 x 80

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3 years ago

You have a battery marked " 6.00 V 6.00 V ." When you draw a current of 0.383 A 0.383 A from it, the potential difference betwee

Archy [21]

Answer:

V = 4.81 V

Explanation:

As the potential difference between the battery terminals, is less than the rated value of the battery, this means that there is some loss in the internal resistance of the battery.
We can calculate this loss, applying Ohm's law to the internal resistance, as follows:

$V_{rint} = I* r_{int}$

The value of the potential difference between the terminals of the battery, is just the voltage of the battery, minus the loss in the internal resistance, as follows:

$V = V_{b} - V_{rint} = 5.03 V = 6.0 V - 0.383 A* r_{int}$

We can solve for rint, as follows:

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When the circuit draws from battery a current I of 0.469A, we can find the potential difference between the terminals of the battery, as follows:

$V = V_{b} - V_{rint} = 6.0 V - 0.469 A* 2.53 \Omega= 6.0 V - 1.19 V = 4.81 V$

As the current draw is larger, the loss in the internal resistance will be larger too, so the potential difference between the terminals of the battery will be lower.

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3 years ago

Two cellists, one seated directly behind the other in an orchestra, play the same 220-Hz note for the conductor who is directly

Llana [10]

Answer:

d= 1.56 m

Explanation:

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The minimum possible value for this distance, is when n=1, as it can be seen here:

dmin = λ

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v = λ*f

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3 years ago

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3 years ago

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