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Andrej [43]
4 years ago
5

An english scientist created the first periodic table of elements

Physics
2 answers:
olga nikolaevna [1]4 years ago
8 0
Like a then it would be A something I guess it goes like that
natka813 [3]4 years ago
8 0

false just did apex answer

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List three reasons that rain predictions made by meteorologists are sometimes incorrect. Explain your response.
Agata [3.3K]
1. <span>the low pressure is moving slower than expected.
This make the meteorologist receive premature data which make them fail to interpret the data correctly and make the wronf prediction.
2. Sudden change in wind direction, which transfer the natural occurence into other region than where it initially predicted
3. We still haven't developed the methodology to 100% predict natural occurence</span>
5 0
3 years ago
The neurons of giant squids, for example, consist of axons with very large radii, which allows the squid to react very quickly w
Alinara [238K]

Answer:

100

Explanation:

\rho_m = Resistivity of axon

r = Radius of axon

t = Thickness of the membrane

\rho_a = Resistivity of the axoplasm

Speed of pulse is given by

v=\sqrt{\dfrac{\rho_mrt}{2\rho_a}}

So, radius is given by

r=\dfrac{2\rho_a}{\rho_mt}v^2

If radius is increased by a factor of 10 new radius will be

r_2=\dfrac{2\rho_a}{\rho_mt}(10v)^2\\\Rightarrow r_2=100\dfrac{2\rho_a}{\rho_mt}v^2\\\Rightarrow r_2=100r

So, The radius will increase by a factor of 100.

5 0
4 years ago
A driver drives a car up a hill. The driver keeps pressing the gas so that the engine increases the force it applies to the car.
iris [78.8K]

Answer:

because it's on an upward climb therefore newton's law of motion is in place and you're car is pulled by gravity

6 0
3 years ago
Why must the difference between the water level in the eudiometer tube and the water level in the beaker be measured
Bas_tet [7]

Answer:

Explanation:

The difference between the water level in the eudiometer tube and the water level in the beaker must be measured because we have to put into consideration, the pressure of the gases in the eudiometer tube. This said pressure of gas in the eudiometer must equal the atmospheric pressure. If or by chance, the water levels happens not to be at the same height, then this is not the case. And then, as a result, in order to account for the difference between both, while also being able to get accurate results, you have to find the difference or subtract the water levels and then go ahead in converting them to mmHg.

3 0
3 years ago
A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from res
Bumek [7]

Answer:

Part a)

H = 26.8 m

Part b)

error = 7.18 %

Explanation:

Part a)

As the stone is dropped from height H then time taken by it to hit the floor is given as

t_1 = \sqrt{\frac{2H}{g}}

now the sound will come back to the observer in the time

t_2 = \frac{H}{v}

so we will have

t_1 + t_2 = 2.42

\sqrt{\frac{2H}{g}} + \frac{H}{v} = 2.42

so we have

\sqrt{\frac{2H}{9.81}} + \frac{H}{336} = 2.42

solve above equation for H

H = 26.8 m

Part b)

If sound reflection part is ignored then in that case

H = \frac{1}{2}gt^2

H = \frac{1}{2}(9.81)(2.42^2)

H = 28.7 m

so here percentage error in height calculation is given as

percentage = \frac{28.7 - 26.8}{26.8} \times 100

percentage = 7.18

5 0
3 years ago
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