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Aleks04 [339]
3 years ago
10

The width of a particular microwave oven is exactly right to support a standing-wave mode. Measurements of the temperature acros

s the oven show that there are cold spots at each edge of the oven and at three spots in between. The wavelength of the microwaves is 12 cm . How wide is the oven?
Physics
1 answer:
Serjik [45]3 years ago
3 0

Answer:

Explanation:

In standing wave pattern we find region of nodes where vibration is minimum or cold spots . The distance between any two consecutive node is half the wave length . There are 5 cold spot or node in between which is equal to 4 half wave length .

width of oven = 4 x half wave length

= 4 x (12 / 2 )

= 24 cm

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A pitcher throws a baseball that reaches the catcher in 0.75 s. The ball curves because it is spinning at an average angular vel
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The change in angular displacement as a function of time is the definition given for angular velocity, this is mathematically described as

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4 0
3 years ago
Which two phrases best describe cells?
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3 0
3 years ago
Water runs out of a horizontal drainpipe at the rate of 135 kg/min. It falls 3.1 m to the ground. Assuming the water doesn't spl
Arlecino [84]

Answer:

The average force exerted by the water on the ground is 17.53 N.

Explanation:

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mass flow rate of the water, m' = 135 kg/min

height of fall of the water, h = 3.1 m

the time taken for the water to fall to the ground;

h = ut + \frac{1}{2}gt^2\\\\h = 0 +  \frac{1}{2}gt^2\\\\t = \sqrt{\frac{2\times 3.1}{9.8} } \\\\t = 0.795 \ s

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Therefore, the average force exerted by the water on the ground is 17.53 N.

7 0
3 years ago
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