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My name is Ann [436]
2 years ago
10

If a wave is traveling at a steady speed and its frequency is

Chemistry
1 answer:
Nataly [62]2 years ago
4 0

Answer:

If the frequency is doubled, the wavelength is only half as long.

Explanation:

Wave speed equals frequency*wavelength. So doubling the frequency must halve the wavelength in order for wave speed to remain the same.

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3 years ago
An inventor claims to have devised a closed cyclic engine which exchanges heat with cold and hot reservoirs at 25 and 350 ◦C, re
kati45 [8]

Explanation:

The given data is as follows.

T_{c} = 25^{o}C,  T_{h} = 350^{o}C

Work produced per kJ of heat extracted from hot reservoir = 0.45 kJ = Efficiency

If the device is Carnot cycle then its efficiency will be maximum and its value will be equal to [1 - (\frac{T_{c}}{T_{h}} )]

Using this relation we will calculate the efficiency as follows.

                 Efficiency = [1 - (\frac{T_{c}}{T_{h}} )]

                        = 1 - (\frac{25}{350})

                       = 0.928

Hence, it means that this type of device is possible and the claim is also believable.

7 0
3 years ago
The distance between two points on a map is 0.704 kilometers. What is the distance in meters?
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704 meters is the answer
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3 years ago
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Observations are made by using one of the five senses (touch, sight, taste, smell, hearing) to gather information.
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answer B the rock is purple

4 0
2 years ago
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What is Alfunim second element ? Please help !!!
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Aluminum? It is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic and ductile metal in the boron group. By mass, aluminium is the most abundant metal in the Earth's crust and the third most abundant element
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3 years ago
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