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olga2289 [7]
4 years ago
7

In the "Design a Thermos" lab, the temperature of the thermos was compared with a container that was not insulated.

Chemistry
2 answers:
Hitman42 [59]4 years ago
8 0

Answer:

B

Explanation:

so you can see the difference

Flura [38]4 years ago
8 0

Answer:

It is B

Explanation:

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Protons are accelerated to near the speed of light in particle accelerators. What is the wavelength of a proton with a speed of
aev [14]

Answer:

The wavelength of the proton is 1.3657*10⁻¹⁵ m or 1.3657*10⁻⁹ anstrong

Explanation:

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. it is expressed in units of length (m).

In other words, the waves are characterized by having a sinusoidal shape characterized by peaks and valleys. The distance between two peaks of the sine wave is called the wavelength.

 Light is considered as a wave and can also behave as a set of particles (photons). De Broglie stated that matter in general also exhibits this double behavior, that wave-corpuscle duality.

This is reflected by the expression

λ= h/ (m*v)

where m is the mass of the particle, v is the speed with which it moves and the wavelength associated with its movement, and h Planck's Constant (6.626*10⁻³⁴ J s)  

Being:

  • v=speed= 2.90*10 ⁸ m/s
  • m=mass= 1.673*10⁻²⁷ kg

Replacing and performing the calculations you get:

λ=1.3657*10⁻¹⁵ m

Being 1 anstrong  1*10⁻⁶ m, λ=1.3657*10⁻⁹ anstrong

<u><em>The wavelength of the proton is 1.3657*10⁻¹⁵ m or 1.3657*10⁻⁹ anstrong</em></u>

3 0
3 years ago
How would removing invasive species from an
Solnce55 [7]

The correct answer is D. The native species would not have to  compete for necessary resources

Explanation:

Invasive species, which include any living organism that is not native in an ecosystem, contribute to the extinction of native species as they compete for resources such as food, shelter, etc. with native species. For example, the  Asian Carp, which was introduced to lakes in the U.S. consumes plankton, which reduces the amount of plankton available for native fish. In this context, by removing invasive species native species would not have to compete for resources and their chances to extinct will fall.

5 0
4 years ago
a person weighs 70 n on the moon, what is the person's mass in kilograms? how much is his weight on earth?​
Alik [6]

Answer:

The acceleration of gravity on the moon’s surface is about 1.62 m/s^2. The weight of 70N there indicates a mass of (70N / 1.62 m/s^2) = about 43.2 kilograms.

The acceleration of gravity on the Earth’s surface is about 9.81 m/s^2. That same mass here would weigh (43.2 kg x 9.81 m/s^2) = about 423.9 N.

The weight on Earth is about (423.9 / 70) =6.06 times the weight on the moon.

That’s because the acceleration of gravity on Earth is about (9.81 / 1.62) = 6.06 times the acceleration of gravity on the moon.

Explanation:

4 0
3 years ago
The path that energy and nutrients follow in an ecosystem is called a(n)_____
amm1812
I believe it's food chain, and this should be a biology question, not chemistry 
5 0
3 years ago
The volume of tea in a typical teacup 0.2
kobusy [5.1K]

Given :

Some statements.

To Find :

The SI units in each case.

Solution :

1) It is seconds which is denoted by seconds.

2) It is mass and units are kg. ( Not pounds because S.I unit is kg )

3) Since, we are talking about length is so its meter.

4) SI units of volume is given by meter³.

Hence, this is the required solution.

3 0
3 years ago
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