Questions by Jefim

Questions by Jefim

You want to create a spotlight that will shine a bright beam of light with all of the light rays parallel to each other. You have a large concave spherical mirror and a small lightbulb. Where should you

asked Jun 2, 2021

1 answer

2 votes

85.9k views

The blog Eye of the Storm was like citizen journalism in that the:

asked May 21, 2021

1 answer

4 votes

80.9k views

3.01 x 1023 molecules H20

asked Apr 10, 2021

1 answer

0 votes

56.5k views

Mimicry or camouflage ?

asked Mar 21, 2021

2 answers

4 votes

172k views

What’s the correct answer???

asked Jan 28, 2021

1 answer

5 votes

196k views

Which of these would be caused by a chemical change? A) The formation of lava. B) Sedimantary rock layering over time. C) Metamorphic rock forming from igneous. D) Metamorphic rock eroding to form sedimentary

asked Aug 10, 2020

2 answers

0 votes

210k views

8b^2-7b-1=(8b+1)() Find The Missing Factor

asked Oct 14, 2019

2 answers

0 votes

155k views

Is 0.66 repeated a rational number

asked Sep 12, 2019

2 answers

0 votes

11.0k views

Sonali attended a 2 day tennis tournament over the weekend.when she came back home,sonali became quite ill.she got to know that other players attending the tournament has also become ill. a) list 2 ways

asked Feb 28, 2019

1 answer

0 votes

156k views

If an atom has 34 electrons, 46 neutrons, and 34 protons, what is its mass number? what is the name of the element?

asked Nov 25, 2018

1 answer

5 votes

133k views

10 times as much as 9 is

asked Apr 4, 2018

2 answers

1 vote

143k views

Agriculture, forestry, and mining, or industries that use natural resources, are considered ______________ industries.

asked Mar 19, 2018

1 answer

0 votes

26.4k views

What beliefs about earth and the heavens were proved by the discoveries of Aristarchus and Eratosthenes?

asked Feb 9, 2018

1 answer

5 votes

159k views

Two quick questions Prefiero que______ una carta. A. escribas B. escribe C. escribi D. escribo La agente de viajes recomienda que nosotros A. llevar B. llevabamos C. llevamos D. llevemos

asked Jan 27, 2018

2 answers

2 votes

58.6k views

Sikhism began as a movement to combine _____.

asked Jan 26, 2018

1 answer

0 votes

210k views

According to any anthropologists, a land bidge during the ice age allowed migration between which two continents

asked Mar 10, 2017

1 answer

0 votes

221k views

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