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Aneli [31]
3 years ago
13

Two forces have magnitudes in the ratio

Physics
1 answer:
rewona [7]3 years ago
8 0

Answer:

F1=26N and F2=09N ..this is from the two simultaneously equations

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What does the diagram represent?
solong [7]

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Atoms in a element on the periodic table I dont know which one tho so try google that sorry I am not much of a help

Explanation:

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A toaster changes electrical energy to thermal energy. This is a/an
erastova [34]

A because the toaster converts electrical energy into heat energy and, after the bread has been heated for sufficient time, toasts pop out, ready to be buttered. And converting means transforming.

7 0
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Which of the following words BEST describes scientists’ current knowledge about the universe?
Vilka [71]

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your answer is changing

Explanation:

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3 years ago
Explain why water, with its high specific heat capacity, is utilized for heating systems such as hot-water radiators.
Lubov Fominskaja [6]

Answer:

Answer in explanation

Explanation:

Water is mainly used as coolant in heating systems like hot-water radiators. The main function of water in such systems, is to absorb as much heat as possible, in order to decrease the temperature of the system and as a result cool it.

The specific heat capacity is the measure of heat energy that is required to raise the temperature of unit mass of a substance through 1 °C. In other words, specific heat capacity quantifies the amount of heat that can be stored by a unit mass of a substance having a degree rise in temperature.

Thus, the more specific heat a substance has, the more heat it can absorb from the hot system. Hence, the specific heat capacity of a coolant must be high.

<u>This is the reason why water, with its high specific heat capacity, is utilized for heating systems, such as radiators.</u>

5 0
3 years ago
At a distance of 8 m, the sound intensity of one speaker is 66 dB. If we were to place 3 speakers in a circle of radius 8 m, wha
ludmilkaskok [199]

Answer:

dβ = 70. 77 dβ

Explanation:

The intensity of sound in decibels is

         dβ = 10 log I/I₀

let's look for the intensity of this signal

         I / I₀ = 10 dβ/10

         I / I₀ = 3.981 10⁶

the threshold intensity of sound for humans is I₀ = 1 10⁻¹² W / m²

         I = 3.981 10 ⁶ 1 10⁻¹²

         I = 3,981 10⁻⁶ W / m²

It is indicated that 3 cornets are placed in the circle, for which total intensity is

        I_total - 3 I

        I_total = 3  3,981 10⁻⁶

        I_total = 11,943 10⁻⁶ W / m²

let's reduce to decibels

      dβ = 10 log (11,943 10⁻⁶/1 10⁻¹²)

      dβ = 10  7.077

      dβ = 70. 77 dβ

3 0
3 years ago
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