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Artyom0805 [142]
3 years ago
9

Water has a specific heat of 4.184

Physics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

Water.

Explanation:

This means:

1) For the temperature of water to raise at any point to the next degree by 1°C, will require a specific heat capacity of  4.184  J/Kg°C

2) For the temperature of wood to raise at any point to the next degree by 1°C, will require a specific heat capacity of  1.760  J/Kg°C

Note that: specific heat is directly proportional to energy, therefore the higher the heat capacity, the higher the energy.

4.184  J/Kg°C is higher than 1.760  J/Kg°C, hence WATER needs more energy.

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Monochromatic light of wavelength 580 nm passes through a single slit and the diffraction pattern is observed on a screen. Both
Nuetrik [128]

Answer:

Part a)

Width of the slit is

a = 580 nm

Part b)

Ratio of intensity is given as

\frac{I}{I_o} = 0.81

Explanation:

Part a)

As we know by the formula of diffraction we will have

a sin\theta = \lambda

so we have

\theta = 90

\lambda = 580 nm

so we will have

a sin90 = 580 nm

a = 580 nm

Part b)

As we know that the intensity in diffraction pattern is given as

I = I_o (\frac{sin\theta}{\theta})^2

\frac{I}{I_o} = (\frac{sin\theta}{\theta})^2

so for angle 45 degree

\frac{I}{I_o} = (\frac{sin45}{\pi/4})^2

\frac{I}{I_o} = (\frac{sin45}{\pi/4})^2

\frac{I}{I_o} = 0.81

7 0
3 years ago
A sound has a higher pitch than a bell. Which quantity must also be higher in this sound than in the bell?
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Answer:

frequency

Explanation:

6 0
3 years ago
Does hot air rise? Why?
pashok25 [27]

Answer: Yes

Explanation:

does hot air rise

er substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward. This is the concept used in the hot air balloons.

8 0
2 years ago
an alligator crawls 25m to the left with an average velocity of -1.2m/s. how many seconds did the alligator crawl?
Crank
It will take 21s for yhe alligator to crawl that distance. Reported answer contains 2 Significant Figures.

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Answer:

A, C

Explanation:

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7 0
3 years ago
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