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lesya [120]
3 years ago
11

What is the heat (Q) required to change 1 kg of liquid water's temperature from 0 °C to 100 °C if water has a specific heat of 4

185.5 J/(kg x °C)?​
Physics
1 answer:
77julia77 [94]3 years ago
8 0

Answer:

asi que sobre todo lol siento soy mexican y agora no se Como escribir en inglessoi aamso jodidamente lol siento que me enfrie want thig ror you

Explanation:

asi que sobre todo lol siento soy mexican y agora no se Como escribir en ingles soi aamso jodidamente lol siento que me enfrie want thig ror youasi que sobre todo lol siento soy mexican y agora no se Como escribir en ingles soi aamso jodidamente lol siento que me enfrie want thig ror you

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What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string, wil
lora16 [44]

Answer:

\theta=145

Explanation:

The amplitude of he combined wave is:

B=2Acos(\theta/2)\\

A, is the amplitude from the identical harmonic waves

B, is the amplitude of the resultant wave

θ, is the phase, between the waves

The amplitude of the combined wave must be 0.6A:

0.6A=2Acos(\theta/2)\\ cos(\theta/2)=0.3\\\theta/2=72.5\\\theta=145

5 0
3 years ago
A river 800m wide flows at the rate of 5km/h . A swimmer who can swim at 10km/h in still water wants to cross the river straight
LuckyWell [14K]

Answer:

At an angle of 30^{\circ}

Explanation:

Assume the river flows from East to West so for the swimmer to cross across it, assume he crosses it from West to East.

The resultant speed will be given by

R= \sqrt {10^{2}-5^{2}=\sqrt {75}\approx 8.66 km/h\\Direction=sin^{-1}\frac {5}{10}\approx 30^{\circ}

6 0
2 years ago
HELP THIS LAST DAY!!!
Alex_Xolod [135]

Answer:

The proton has much greater mass

Explanation:

  • Protons and electrons are part of an atom
  • Proton exists inside nucleus whereas electron keep moving around the nucleus
  • Electrons have negative charge where as protons have positive charge .
8 0
2 years ago
Read 2 more answers
Without friction, what is the mass of an ball accelerating at 1.8 m/sec2 to which an
Juli2301 [7.4K]

Answer:

<h2>23.33 kg </h2>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m  = \frac{42}{1.8}   = 23.3333... \\

We have the final answer as

<h3>23.33 kg</h3>

Hope this helps you

4 0
2 years ago
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Iii A load of 2.5 N is hung on the spring.
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N stands for Newton
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