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dmitriy555 [2]
3 years ago
8

In certain fireworks, potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen. This is an example of a reaction

. The opposite process is a reaction.
NextReset
Physics
1 answer:
Crazy boy [7]3 years ago
6 0
Redox reactions( oxidation-reduction reaction)
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In a two-slit experiment, the slit separation is 3.00 × 10-5 m. The interference pattern is created on a screen that is 2.00 m a
balu736 [363]

Answer:

The value is  \lambda  = 214.3  \ nm

Explanation:

From the question we are told that

   The  slit separation is  d =  3.00 * 10^{-5} m

    The  distance of the screen is  D =   2.00\ m

    The  order of fringe is  n  =  7

    The path difference is  y =  10.0 \ cm  =  0.1 \  m

    Generally the path difference is mathematically represented as

      y =  \frac{n *  \lambda  *  D}{ d}

=>   0.1 =  \frac{7 *  \lambda  * 2.00 }{ 3.00 * 10^{-5}}

=>  \lambda  =  \frac{0.1 *3.00 * 10^{-5} }{7 * 2.00 }

=>   \lambda  =  \frac{0.1 *3.00 * 10^{-5} }{7 * 2.00 }

=>   \lambda  = 2.143 *10^{-7} \  m    

=>    \lambda  = 214.3  \ nm

6 0
3 years ago
archer shoots his arrow towards a target at a distance of 90 m, and hits ‘bullseye’ . Calculate the acceleration and time taken
mario62 [17]

Answer:

a =45 m/s2

t = 2 seconds

Explanation:

Hi, to answer this question we have to apply the next formula:

v^2 = u^2 +2 a d

Where:

v = final velocity = 90 m/s

u = initial velocity = 0 m/s (shots from rest)

a = acceleration (m/s2)

d = distance = 90m

90^2 = 0^2 + 2a(90)

Solving for a:

8,100= 180 a

8,100/180 = a

a = 45 m/s^2

For time:

v = u + at

90 = 0 + 45t

90/45=t

t =2 seconds

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3 years ago
An object travels 10 meters in the first second of travel, 10 meters again during the second second of travel, and 10 meters aga
11111nata11111 [884]
10m/s2 because it travels 10 meters every second
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4 years ago
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When pressing the accelerator on a car, the ___________ energy of the fuel is transformed into the _____________ energy that mak
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B. Chemical; Mechanical
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3 years ago
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Margaret is the new director of research at a well-known pharmaceutical company. She has been asked to design a set of research
Serjik [45]

Answer:

Double blind experiment

Explanation:

It is an experimental method , which helps to avoid any impartiality and any error due to biasing .

The experiment give rise to very accurate results , which is very important for any experiment .

Hence , the new director Margaret , need to design a set of double - blind experiments.

7 0
4 years ago
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