Leigh

Ultraviolet light causes sunburns, whereas visible light, even of greater intensity, does not. Why?

17 years ago

Why doesn't a neon sign finally run out of excited atoms and produce dimmer and dimmer light?

17 years ago

A lamp fimament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an incandescent lamp is viewed with a spectroscope?

17 years ago

Since an absorbing gas reemits the light it absorbs, why are there dark lines in an absorption spectrum? That is why doesn't the reemitted light simply fill in the dark places?

17 years ago

When a certain material is illuminated with visible light, electrons jump from lower to higher energy states in atoms of the material. When illuminated by ultraviolet light, atoms are ionized as some of them eject electrons. Why do the two kinds of illumi...

17 years ago

Thank you very much. I appreciate it a lot.

17 years ago

Find a record breaking temp. for a city. Include name of city, temp., and record broke. Give the formula for converting degrees F. to degrees C. Using the formula show how to convert to degrees C. Part 2) Find real life application of a linear function. S...

17 years ago

Students should follow the steps in Finding, Evaluating, and Utilizing Information to complete a general search for reliable sources: (1) What is the purpose and affiliation of the organization or author related to the article? (2) What are the author’s c...

16 years ago

Suppose the shadow zone for P waves was located between 90° and 110°, rather than between 105° and 140°. What would this indicate about the size of the Earth’s core?

16 years ago

Question: "List 2 erosional features and 2 depositional features associated with glaciation." Is "Two erosional features associated with glaciation are truncated spurs and cirques. Two depositional features associated with glaciation are glacial till, and...

16 years ago

20% on $600,000 =

16 years ago

What do I do if zero is in a fraction?

16 years ago

I need help with the first and third quartiles of 15,17,19,22,23,27,31,36,43,44,48,54,57 is the answer 20.5;46 or 20.5;48

16 years ago

I need help finding the reciprocal of 1/3, (9-4) ?

16 years ago

A semi-truck travels on a paved road for 2 hours at an average speed of 20 miles per hour faster than it travels on a dirt road. The time spent on the dirt road is 3 hours. If the entire trip is 200 miles, how fast is the truck traveling on the dirt road?

15 years ago

a normal distribution ha am ean of 80 with a standard deviation of 20. what score separates the highest 15% of the distribution from the rest of the score?

15 years ago

'bonnie has b stickers. first, bonnie gave away 1/6 of her stickers. Then Bonnie got 12 more stickers, and she has 47. Write an equation, involving B, the corresponds to this situation"

14 years ago

Vandalay Industries is considering the purchase of a new machine for the production of latex. Machine A costs $2,190,000 and will last for 7 years. Variable costs are 38 percent of sales, and fixed costs are $122,000 per year. Machine B costs $4,530,000 a...

14 years ago

I following is a paragraph regarding my experience with credit cards. I had to use least five adverbs and five adjectives in my paragraph. I have to bold the adverbs and underline the adjectives, the only problem is I am having a hard time figuring out wh...

14 years ago

I following is a paragraph regarding my experience with credit cards. I now need to bold the nouns and pronouns and underline the verbs. I do not know why, but I am having a hard time with this. Any help please. When I was 18, I received my first credit c...

14 years ago

I am supposed to provide five examples of how the reviewer of the movie Burlesque used adverbs and five examples of the use of adjectives. I also need to decide if they used them effectively, why or why not. (yes, I know the last question I will have to d...

14 years ago

What is the kinetic energy in J of a 66 g tennis ball approaching a tennis racket at 11.9 m/s?

14 years ago

What is the pH of 0.2 M solution of sodium propanoate?

14 years ago

A radiation worker is subject to a dose of 150 mrad/h of protons for one 40 h work week. How many times the yearly allowable effective dose did she receive?

14 years ago

The area of a rectangle is 243cm^2. The length is three times greater than the width. What are the dimensions of the rectangle?

14 years ago

Near shore, larger sand and gravel particles are moved along the ocean bottom by ____. a. deposition b. turbulence c. spits d. density currents

14 years ago

solve. If 1/4inch equals50miles find the miles represented by 41/2 miles.

12 years ago

Alfred has just developed a new super ball and you have been asked to test its rebound capabilities. From your experiment you have found if you drop the ball from a height of 250 centimeters the first bounce average is 180 cm. rebound ratio = ? Using this...

12 years ago

Calculate the mass (in grams) of sugar, C12H22O11, in 166.4 mL of a 1.79 M solution of sugar.

12 years ago

the legs of an isosceles triangle have lengths x+1 and -x+7. the base has length 3x-3. what is the length of the base? a. 6 b. cannot be determined c. 4 d. 3

11 years ago

FInd the circumcenter of the triangle (-2,4),(-2,1), (1,-1). Can someone help I'm so confused.

11 years ago

In rectangle PQRS, PR=18x-28 and QS=x+380. Find the value of x and the length of each diagonal.

11 years ago

Which of the following passages from the text identifies a key event in the plot A: I'll buy your unexpired time I think between us we could make some fine things you and I B: his feet went out from under him his hands came down on top of the furnace C: b...

10 years ago

Noelle bought two 1/2 gallon cartons of lemonade. How many ounces of lemonade did she buy?

9 years ago

Amazon is bringing me a box of shark repellent to my small island (about a 10 m diameter). They are going to drop it as they fly overhead. The plane flies 125 m above the ground at a speed of 550 m/s. How far away from my island should they drop my suppli...

8 years ago

Discuss the differences and similarities that can be identified on the basis of technology as an external determinant of the various education system in South Africa, Kenya and Botswana

2 years ago

Explore technology as an external determinant infleunces the education system of South Africa,Kenya and Botswana asked by with references

2 years ago

Thank you both for your help, I have another problem that I have just posted, any help on it would be appreciated.

14 years ago

Which is NOT associated with upwelling?

13 years ago

Acetyl CoA is the answer according to the book, pg 741.

13 years ago

This is kind of random...but, have they proven which language is the easiest for a native English speaker to learn? Was just wondering... I wonder if it is actually Spanish...

13 years ago

1- 4+6+7=17 17-3=14 17!/14! =680

13 years ago

That's what I'm confused about it doesn't make sense it's for the book Johnny tremain chapter two

10 years ago

Is the right answers A and d?

10 years ago

It's actually B and D!!! Just took the quick check

10 years ago

It is definatly C i know for sure

10 years ago

Above is all correct except for Number 3 the right answer is mechanical digestion

10 years ago

Explore technology as an external determinant infleunces the education system of South Africa, Kenya and Botswana

2 years ago

Explore technology as an external determinant infleunces the education system of South Africa,Kenya and Botswana With references

2 years ago