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What is the maximum wavelength in nanometers (nm) needed for the ejection of an electron from sodium using the photoelectric effect? A) 444 nm B) 532 nm C) 720 nm D) 856 nm

answered Dec 31, 2024

1 answer 35.2k views

How much heat in kilocalories is required to melt 2.6 mol of isopropyl alcohol (rubbing alcohol; molar mass = 60.0 g/mol)? The heat of fusion and heat of vaporization of isopropyl alcohol are 21.4 cal/g

answered Dec 31, 2024

1 answer 3.7k views

The ratio of the volume of cone A to the volume of cone B is 27:8 Cone A and cone B are mathematically similar. The surface area of cone A is 297 cm² Show that the surface area of cone B is 132 cm²

answered Dec 16, 2024

2 answers 83.3k views

What is the FDA definition of its natural food label? A produced by farmers who emphasize the use of renewable sources B must be raw unprocessed container preservatives or never have been frozen or heat

answered Sep 26, 2024

1 answer 220k views

A box of chocolates costs $9.47. Pablo bought 6 boxes. How much did he spend

answered Sep 7, 2024

2 answers 84.3k views

A large fruit cake weighs 3kg.Belinda eats 40 percent of the cake and Graham eats 25 percent of the remainder.What is the mass of the cake left over? A) 1.2 kg B) 1.5 kg C) 1.8 kg D) 2.0 kg

answered Aug 20, 2024

1 answer 7.7k views

When Mary asks her father to help her lose weight, her father suggests A. they spend more time together as a family. B. they continue their tradition of eating fast food. C. they spend more time together

asked Aug 16, 2024

2 answers 161k views

Organizations provide career opportunities to those who need it the most by offering registered apprenticeship programs that provide first-rate training, good jobs, and fair pay. What is the main purpose

answered Aug 14, 2024

1 answer 141k views

What is the difference between the digestive system in humans and frogs? a) Frogs have a more complex digestive system b) Humans have a longer digestive tract than frogs c) Frogs lack a stomach d) Humans

asked Jul 13, 2024

1 answer 200k views

Which expression is equivalent to 6-(-8)

answered Jul 6, 2024

2 answers 65.6k views

13. "Yes; the machine turns off a regular quantity of cardings, and of course, they must keep as regularly to their work the whole of the day; they must keep with the machine, and therefore however humane

answered May 26, 2024

1 answer 122k views

How do NYC and Washington DC's mobile transit fares compare to Uber in terms of ease of use and flexibility?

asked May 12, 2024

1 answer 2.1k views

Read the text below. Let the egg boil for about six minutes. Then, lift the egg from the water with a spoon and drop it into a cup of cold water to let it cool. When you're ready to peel the egg, roll

answered Apr 17, 2024

1 answer 216k views

If a member of one particular fraternity on campus is rude to me, and I say, "everyone in that fraternity is rude," what am I doing?a. Stereotyping b. Totalizing c. Discriminating

answered Apr 8, 2024

2 answers 99.8k views

The revenue that the government raises by printing money is called

asked Feb 3, 2024

1 answer 52.9k views

The rate at which a complex waveform repeats is called its: A) resonant frequency. B) Fourier frequency. C) fundamental frequency. D) repetition frequency.

answered Jan 31, 2024

1 answer 106k views

Silvia has a collection of stamps from around the world as listed below. 4 stamps from Mexico 3 stamps from Peru 6 stamps from Germany 2 stamps from Tonga 5 stamps from New Zealand She places them all

asked Nov 22, 2023

2 answers 96.5k views

Help with english//////////

asked Oct 1, 2023

1 answer 45.4k views

Which of the following expressions are equivalent to -4+ (4+5)? Choose 3 answers: A (-4+4) +5 B (-4 – 4) +5 C - (4 — 4) + 5 D - (4) + (-4) + 5 E - 4+4+5

asked Sep 10, 2023

2 answers 116k views

Evaluate the exponential function f(x)=12^x

answered Sep 1, 2023

1 answer 82.0k views

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