Recent activity by Vitaliy Yanchuk

Question

What is the wavelength, in nanometers, of the bright line of the hydrogen emission spectrum corresponding to the transition from n=6 to n=2?

asked Dec 12, 2024

1 answer 51.0k views

The table below lists the masses and volumes of several pieces of the same type of metal. There is a proportional relationship between the mass and the volume of the pieces of metal. Volume (cubic centimeters)

answered Nov 26, 2024

1 answer 58.7k views

What advice does the young Pole give to the new prisoners regarding how to "move away from death" and "survive"?

answered Sep 23, 2024

1 answer 155k views

Write the equation in standard form, give the center, and give the radius x^2+y^2+4x-8y=5

answered Sep 15, 2024

1 answer 60.2k views

What does a 95% and 99% level of statistical significance mean? Explain in terms of Standard Deviation. Draw a chart to explain your reasoning.

answered Jul 29, 2024

1 answer 58.7k views

How do prostaglandin inhibitors work to delay labor? a) Increase prostaglandin synthesis b) Inhibit uterine contractility c) Stimulate cervical ripening d) Enhance fetal lung maturity

asked Jul 27, 2024

1 answer 92.3k views

Why didn't scientific thinkers immediately accept the Copernican model of the solar system? A. They had irrefutable evidence that the Earth-centered model was correct. B. Copernicus's model did not make

answered Jul 21, 2024

1 answer 157k views

If Wents placed his agar blocks only halfway on the cut surfaces of grass shoots with their tips removed, what should he have observed? A) No change in the growth of the grass shoots. B) Increased growth

asked Jul 16, 2024

1 answer 57.8k views

When only ice crystals exist in a cloud, the cloud is said to be: A) Cirrus. B) Cumulus. C) Stratus. D) Nimbostratus.

asked Jul 11, 2024

1 answer 29.1k views

The average U.S. unemployment rate fluctuates around ______ and the National Restaurant Association estimates that the number of jobs in the industry will grow by ______ over the next decade. a) 5%, 5%

asked Mar 7, 2024

1 answer 191k views

How to write this number in standard form (8*10)+(6*10,000)+(3*100,000)(2*100)+(9*1,000)+(7*1)

answered Jan 13, 2024

1 answer 145k views

assume you prefer a portfolio with an expected standard deviation of 25%. you can invest in the market and at the same time invest/borrow money at the risk-free rate. the expected return on the market

answered Jan 10, 2024

1 answer 12.2k views

What does the william blake think of formal education?

asked Dec 20, 2023

1 answer 150k views

How many times larger is 2 x 10^12 than 5 × 10^6

asked Sep 11, 2023

1 answer 14.8k views

Let h = number of hours to bike 165 mi. Let m = number of miles biked in 7 hr. Which proportion can be used to determine the value of h?

answered Aug 16, 2023

1 answer 184k views

Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost $30 and same-day tickets cost $20. For one performance,there were 40 tickets sold in all, and the total

asked Aug 3, 2023

1 answer 97.1k views

Harry wants to buy a motorbike that costs £600.He saves 30% of his wages each month.Each month Harry earns £400.Calculate how many months it will take Harry to save enough money?

answered May 30, 2023

1 answer 182k views

Name two branches of Chemistry and give an example for each of what that branch has offered to society.

asked May 13, 2023

1 answer 56.7k views

9. The chemical formula for the hormone testosterone is C19H28O2(s). What is its molar mass?

answered Apr 24, 2023

2 answers 220k views

Hcf of 80 and 140 please meow

asked Mar 11, 2023

1 answer 30.9k views

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