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3 years ago

What characteristics should a good question have

1 answer:

8 0

Purposeful <span>Opening but with a good direction Open questions require more than a yes or no answer. </span>Encourages higher levels of thinking – Not all questions are created equal. A question that facilitates critical thinking and processing is of more value than a “got it” question (questions that are usually a repetition of content presented by the lecturer).http://blog.lifeway.com/explorethebible/blog/5-characteristics-of-a-good-question/

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Someone please help

Vaselesa [24]

Answer:

hi there!!

Explanation:

Nickel 149 pm

Cobalt 152 pm

Calcium 194 pm

Potassium 243 pm

So Potassium is the correct answer

6 0

3 years ago

What is the term for the process by which a portion of a glacier breaks off and falls into the water

zhenek [66]

The term for the process by which a portion of a glacier breaks off and falls into the water is called calving.

6 0

3 years ago

If light of wavelength 700 nm strikes such a photocathode, what will be the maximum kinetic energy, in eV , of the emitted elect

Oksana_A [137]

If the light of wavelength 700 nm strikes such a photocathode the maximum kinetic energy, in eV, of the emitted electrons is 0.558 eV.

so - $KE_{max} = hc/lembda} work

threshold when KE = 0

hc/lambda = work = 1240/900=1.38 eV

b) Kemax = hc/lambda - work = 1240/640 -1.38=0.558 eV

What is photocathode?

A photocathode electrolyte interface can be used in a photoelectrolysis cell as the primary light-harvesting junction (in conjunction with an appropriate electrochemical anode) or as an optically complementary photoactive half-cell in a tandem photoelectrode photoelectrolysis cell (Hamnett, 1982; Kocha et al, 1994).
In the case of the former, the electrode should ideally harvest photon energy across the majority of the solar spectrum in order to achieve the highest energy conversion efficiency possible.
In the latter case, however, the photocathode may only be active in a specific band of the solar spectrum in order to generate a cathodic photocurrent sufficient to match the current generated in the photoanodic half-cell.

To learn more about Photocathode from the given link:

brainly.com/question/9861585

#SPJ4

3 0

2 years ago

A block of mass 2. 0 kg, starting from rest, is pushed with a constant force across a horizontal track. The position of the bloc

yan [13]

The magnitude of the change in momentum of the block between zero and 4. 0 seconds is

dp=1.6m/s

<h3>What is the magnitude of the change in momentum of the block between zero and 4. 0 seconds?</h3>

Generally, the equation for the kinematics equation is mathematically given as

x=x+ut+0.5at^2

Therefore

1.6=0+0+0.5*a*1^2

a=0.2m/s^2

In conclusion, change in momentum

dP=mv-mu

2.0*0.8-0

dp=1.6m/s