# AC

Popular questions and responses by AC
1. ## Chemistry

Write a balanced equation for the reaction that occurs in each of the following cases. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) I think have the reactions, but I'm stuck with the states of

2. ## ...Physics...

A jet moving at 500 km/h due east moves into a region where the wind is blowing at 120 km/h in a direction 30 degrees north of eat. What is the new velocity and the direction of the aircraft relative to the ground? I am completely lost on this question...

3. ## Stats

Twenty-five percent of all deaths (all ages) are caused by diseases of the heart. Ischemic heart disease accounts for 16.4% of all deaths and heart failure for 2.3%. Choose one death at random. What is the probability that it is from ischemic heart disease

4. ## Math

Makoto's lacrosse practice last 1 3/4 hours. This week he attended all of the practice on Monday and Wednesday, but he had to leave halfway through practice on Friday. How many hours did Makoto's spend at lacrosse practice this week? 1 3/4 + 1 3/4 +1 3/4.

5. ## Math Homework

Sheila's first jump was 3 yards 2 feet 8 inches her second was 2 yards 1 foot 10 inches how much longer was her first jump? express your answer in inches I'm having a hard time setting this up

6. ## Physics

A track star in the long jump goes into the jump at 12 m/s and launches herself at 20 degrees above the horizontal. How long is she in the air before returning to Earth? (g= 9.81 m/s squared) I tried using some formulas but I'm using all of the wrong

7. ## Math

As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to

8. ## Statistics

Recall that very satisfied customers give the XYZ- Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ- Box wishes to use the random sample of 65 satisfaction ratings to provide evidence supporting the claim that

9. ## Coulomb's Law

Two charges attract each other with a force of 16N. What will be the new force if the distance between them is reduced to 1/2 of its original value?

10. ## Homework

Mary Ann poured 250 milliliters of fruit punch into 13 glasses. How many liters of fruit punch did she pour? a. 3.25 Liters b. 32.5 liters c. 325 liters d. 3,250!liters I think it's (a. 3.25), because 250 milliliters converted is 0.25 and 0.25 x 13 = 3.25

11. ## Physics

A droplet of ink in an industrial ink jet printer carries a charge of 1.6 x 10 to the power of -10C and is deflected onto paper by a force of 3.2 x 10 to the power of -4N. What is the strength of the electric field to produce this force?

12. ## Math

Mr Graham buys clay for the art class in 25-pound blocks. He gave out a total of 15 pounds of clay to a class of students for a project. Each student got 1/2 pound of clay. How many students are in the class?

13. ## Math

As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to

14. ## Homework

Laing enlarged a photograph to 1 3/4 times it's original size. The original photograph was 5 inches wide. What was the width of the enlarged photograph?. A. 5 3/20 B. 5 3/4 C. 6 3/4 D. 8 3/4 I think it's D I multiplied 5/1 x 7/4= 35/4 = 8 3/4

15. ## Math help

Which expression represents the quotient 3.36/6. A. (3/6)+(0.03/6)+(0.6/6) B. (3/6)+(0.30/6)+(0.06/6) C. (6/6)+(0.03/6)+(0.6/6) D. (6/6)+(0.30/6)+(0.03/6) I think it's B but not sure of how I really got the answer anymore.

16. ## Physics

A stoane propelled from a catapult with a speed of 60ms-1 attains a height of 120m. Calculate the time of flight, the angle of projection, the range

17. ## Math

Jamal found 1/3 gallon of milk in the kitchen. He poured it into 5 equal size cups. What fraction of a gallon of milk is in each cup? 1/3 of 5 3 x 5 = 15 1/15

18. ## social studies

what impact did the establishment of french and dutch colonies in north america have on native americans?

19. ## Calculus

Solve. (A) 2sin^2 x = 1 (B) tan^2 x = 3

20. ## CALCULUS - need help!

Determine the limit of the trigonometric function (if it exists). 1. lim sin x / 5x (x -> 0) 2. lim tan^2x / x (x ->0) 3. lim cos x tan x / x (x -> 0)

21. ## ssc 101

What is subculture

22. ## physics- pressure/gas

Suppose 2500 J of heat are added to 4.1 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) Find the change in internal energy. I started using U = N (3/2 kB T). But I have too many

24. ## algebra

a 13- foot ladder is placed so that it reaches to a point on the wall that is 2 feet higher than twice the distance from the base of the wall to the base of the ladder. How high does the ladder reach?

25. ## Pre cal

find the value of cotè given secè=5/4 and cscè

26. ## Math

Draw a parallelogram with an area of 48 sq cm with a decimal factor oft the length ,width or both

27. ## Math

Suppose a planet has a radius of 5,000 km. Starting at the point on its surface at 0 degrees longitude and 0 degrees latitude,find the distance to the point on its surface at 30 degrees longitude and 60 degrees latitude.

28. ## Calculus

find the absolute extrema for f(x)= (5-x) with a closed interval of -1,2

1. ## Physics

F_drag = 1/2 P V^2 C_DA = 0.5*0.002377*59^2*1555 = 6433 lbf W = 3922000+150000+4451=4076451 lbs 7% grade = 4 degree F_rolling= W*cos theta*Crr = 4076451*cos4*0.015=60998 lbf F_weight=W *sin theta = 4076451*sin4=284359 lbf F_sum = 6433+60998+284359=351790

posted on November 27, 2019
2. ## History

wrong

posted on August 20, 2019

The answer is 228. This is because of 48 *4=192. Then 192 + 36= 228. This is the correct answer for the surface area of the pyramid.

posted on May 28, 2019
4. ## Math

THANK YOU MS. SUE!!

posted on March 24, 2019
5. ## Math

what are the others

posted on January 14, 2019
6. ## English

is this right

posted on December 12, 2018
7. ## Math

he right ps helper is

posted on November 8, 2018
8. ## Art

posted on October 16, 2018
9. ## Science

posted on October 9, 2018
10. ## math

posted on November 14, 2017
11. ## spelling

hi hi hi hi hi hi hi hi

posted on August 16, 2017
12. ## Chemistry

Thanks scott! Just a quick correction, the reaction in part C is actually 2Na + O_2 --> Na_2O_2

posted on March 11, 2017
13. ## Math

17 bj n lm mnh j mj nj mjk nj

posted on September 27, 2016
14. ## chemistry

You in Davis' class?

posted on April 27, 2016
15. ## math

Name 300 in two different ways

posted on September 10, 2015
16. ## Music

i have the same test

posted on December 8, 2012
17. ## chem lab (webwork)

the answer is 7 for HCL and 8.72 for HC2H3O2

posted on May 1, 2011
18. ## Marketing

To compete more successfully with its many competitors offering packaged cookies, Famous Amos added its own line of extra chunky premium cookies. This seems to be an effort at: A. Market development. B. Combination. C. Market penetration. D. Product

posted on September 11, 2010
19. ## Pigskin geography

#16 what is the host team which is in a state with two peninsula?

posted on November 21, 2007
20. ## Physics

Thanks! ^^

posted on October 7, 2007