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Usimov [2.4K]
2 years ago
10

What evidence contradicts the theory that moving two-ton stones was physically impossible for the egyptians, and must have been

done using alien technology?
Physics
1 answer:
SOVA2 [1]2 years ago
8 0
Archaeological evidence shows that Egyptians worked together to build the pyramids. Remains of quarries and ancient tools suggest that large slabs were created from rock beds. The slabs were placed on sleds and pulled to the building site. To make this process easier, men most likely poured oil on the roadway. This process is depicted in tomb paintings that date back to 1900 BCE.
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In two separate double slit experiments, an interference pattern is observed on a screen. In the first experiment, violet light
sashaice [31]

Answer:

\lambda_3 = 4.72*10^{-7} m

Explanation:

given data:

wavelength \lambda = 708nm = 708*10^{-9} m

using the following relation:

y = \frac{mL\lambda}{d}

according to the given information

second and third dark fringe is at same location. so

y_2 = y_3

\frac{m_2L\lambda_2}{d} = \frac{m_3L\lambda_3}{d}

m_2\lambda_2 = m_3\lambda_3

2*708*10^{-9} = 3*\lambda_3

\lambda_3 = \frac{2*708*10^{-9}}{3}

\lambda_3 = 4.72*10^{-7} m

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2 years ago
A farmer wants to determine which of two brands of cow feed is best for the cows on a farm. Before using one of the feeds on all
Effectus [21]

Answer:

the answer is A

Explanation:

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2 years ago
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Recall the previous question and the scenario with Zamir and Talia finding their way through a maze. Why is their displacement t
Ad libitum [116K]

Sample Response: Zamir and Talia’s total distances are different because they walked different paths in the maze. Zamir took a longer path. However, they had the same displacement because they both ended at the same position.

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2 years ago
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A man swims at a speed of 0.4 m/s. How long will it take him to cross a pool of length 50 m?
konstantin123 [22]
Distance = speed * time, then time = distance / speed.

time = 50 / 0.4 = 125 s
7 0
2 years ago
What physical property of minerals describes how they will break along a plane of weakness in a crystal lattice?
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<span>The answer is cleavage Cleavage is the way minerals will break along a plane of weakness in a crystal lattice. These plane of relative weakness is formed due to various reasons like the locations of atoms in a crystal lattice so these locations form the smooth repeting surface which could be found out by studying its lattice or are sometimes visible to naked eye.</span>
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