Questions by JAManfredi

Questions by JAManfredi

When light of frequency 1.30x 1015 s-1 shines on the surface of cesium metal, electrons are ejected with a maximum kinetic energy of 5.2x 10-19 J. Calculate the wavelength of this light in nm.

asked Oct 9, 2020

1 answer

0 votes

5.0k views

A sign in front of a roller coaster says”You must be 40 inches tall to ride.” What percentage of this height is: a. 34 inches? b. 54 inches?

asked Sep 3, 2020

1 answer

5 votes

131k views

How would i simplify this expression -3(b-7). can some one please help

asked Nov 24, 2019

2 answers

4 votes

199k views

The function f(x) varies inversely with x and f(x)=0.5 when x =0.3. what is f(x) when x=2.4?

asked Nov 15, 2019

1 answer

3 votes

146k views

ABCD is a trapezoid with BC ∥ AD and ∠BAD ≅ ∠CDA. Which of the following statements are valid conclusions? Select True or False for each statement. paralellogram9ma6new111 A. △AED ≅ △CDA A True B False

asked Jul 13, 2019

1 answer

5 votes

106k views

What number would you add to the equation below to complete the square?x2 - 13x = 0?

asked Apr 28, 2019

1 answer

1 vote

164k views

At which point will the hexagon rotate onto itself?

asked Feb 4, 2019

1 answer

1 vote

101k views

This former Governor of Georgia became our 39th President and was a peanut farmer. * 1 point William Jefferson Clinton Richard Milhous Nixon James Earl Carter Gerald Rudolph Ford

asked Nov 27, 2018

1 answer

0 votes

174k views

Help with Hamlet What factors explain why Ophelia’s character is a subject of great debate? Select all that apply. 1 the little text involving her 2 her central role in the play 3 ambiguous evidence 4

asked Nov 7, 2018

1 answer

3 votes

24.5k views

Nitrogen-fixing bacteria live in protective nodules (bumps) on the roots of some plants. These bacteria are able to convert gaseous nitrogen from the air into a form of nitrogen that the plants can use.

asked Oct 14, 2018

2 answers

3 votes

210k views

The formula CaO gives an example of a(n) ______. •ionic compound •covalent compound •molecule •element

asked Apr 13, 2018

2 answers

0 votes

159k views

Select all irrational numbers. 9√ 12−−√ 16−−√ 20−−√ 25−−√

asked Apr 12, 2018

1 answer

1 vote

64.5k views

Which of the following about the ozone layer is not true? a. The ozone layer is formed in the stratosphere. b. The ozone layer helps sustain life by absorbing a large amount of incoming UV radiation. c.

asked Aug 21, 2017

2 answers

0 votes

85.7k views

Donna earns $1,404 per week at her job. However, 19% of her income gets taken out in taxes, and 12% of her income gets taken out and put into her retirement account. Which is a reasonable estimate of the

asked Mar 14, 2017

2 answers

5 votes

184k views

1.Your friend runs up to you, scared that he is not ready for the upcoming quadratics test. To help him study, you will create four different quadratic functions. Then demonstrate to him how to rewrite

asked Feb 15, 2017

1 answer

5 votes

112k views

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