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Most popular questions and responses by pop
1. phy

A child goes down a playground slide with an acceleration of 1.36 m/s^2. 1-Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 28.0 deg below the horizontal.

2. phy

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?

3. phy

An archer shoots an arrow horizontally at a target 14 m away. The arrow is aimed directly at the center of the target, but it hits 52 cm lower. 1-What was the initial speed of the arrow? ** is this the formula for finding t : y=h-1/2(gt^2)=

4. Math

Solve the proportion W/36=5/18 A. W=5 B. W=10 C. W=15 *** D. W=20

5. physics

A chair of mass 14.5 kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 35.0 N that is directed at an angle of 43.0 ∘ below the horizontal and the chair slides along the floor. find the normal

6. Algebra

A kennel charges $20 a day to board dogs, where d represents the number of days. Upon arrival, each dog must have a bath that cost$15, where cost is represented by C(d). Write a function rule to represent this situation. C(d) = 20d + 15 C(d) = 15d + 20

7. phy

Snowballs are thrown with a speed of 11 m/s from a roof 6.0 m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 20^\circ above the horizontal. 1-Find the direction of motion of the two snowballs just before they

8. microeconomics

curve for a monopoly and a monopolistically competitive firm? Select one: a. The MR curve is the same as the demand curve in the long run b. Because of product differentiation, monopolistically competitive firms have more elastic demand and MR curves c.

9. physics

A light string has its ends tied to two walls separated by a distance equal to five-eighths the length of the string. A 53 kg mass is suspended from the center of the string, applying a tension in the string. What is the tension in the two strings of

10. physics

Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 67.3 N, Jill pulls with 98.7 N in the northeast direction, and Jane pulls to the southeast with 133 N. (Since the donkey is involved with such uncoordinated people,

11. chem

methyl salicylate has a mass percent composition of 63.2% C, 31.6% O, and 5.26% H.The mass of one molecule of the compound is 2.53 x 10^-22.Determine the empirical formula and the molecular formula for methyl salicylate.

12. microeconomics

What is Foreign Private Investment? Select one: a. When western economies buy goods from less developed countries b. When foreign companies invest in other countries’ economies by building factories or making loan to the country’s government c. When

13. microeconomics

What factor can a firm in a perfectly competitive market control in the short run? Select one: a. The supply curve b. Quantity produced c. Quantity demanded d. Price

14. science

When was the idea of the atom first introduced? wasnt it around 450 B.C.. Some claim Demotricus introduced it, as the "atomos", but I am not certain on reading his works he understood it as the thing we know as the atom. The best dating we can do is that

15. physics

A light string has its ends tied to two walls separated by a distance equal to five-eighths the length of the string. A 53 kg mass is suspended from the center of the string, applying a tension in the string. What is the tension in the two strings of

17. math

the teacher has 15 gold ribbons , 22blue ribbons and 53 red ribbons. there are 12 boys and 18 girls in the class if the teacher divides the ribbon evenly among the students. how many ribbons will each student have write a expression using brackets then

18. phy

When you push a 1.82-{\rm kg} book resting on a tabletop, it takes 2.21 N to start the book sliding. Once it is sliding, however, it takes only 1.52 N to keep the book moving with constant speed. 1-What is the coefficient of static friction between the

19. math

it takes 3 hours for ten pumps to pump 40000l of water ino a dam. how long will it take nine pumps to pump 60000l of water into a dam

20. books

Does The Road by Cormac McCarthy have the philosophy of Dystopianism in it? Dystopian is also the belief that future technology will bring the downfall of mankind.... right? Thanks in advance from Carolina

21. Math

Perform the indicated operation and simplify? (4x)/(x-2)+(8)/(x+2)

22. Math

Perform the indicated operation and simplify? (4x)/(x-2)+(8)/(x+2)

23. math

The pie chart shown in Figure A-6 illustrates the favorite foods of a selected group of fiveyear- old children. A total of 5,280 children were polled in order to construct this chart. According to the information provided in the chart, how many children

24. Math

How much meters are in 7 1/2centimeters

25. phy

silver ball= 50g water= 350 g water= 0 celcius equilibrium temperature= 10 celcius specefic heat capacity of platinum= 230 what is the temperature of furnace?

26. bio

would these substances pass easily through the pores of dialysis tubing? and EXPLAIN why. 1-glucose 2-na^+ 3-insulin 4-estrogen 5-hydrogen ion

27. Math

If a sphere has radius 5 m. what is the volume of the sphere?

28. calculus

Compute lim t→2(5t − 2 + (t^2/t − 1)).

29. history

when was self government establish

30. science

When was the idea of the atom first introduced? http://en.wikipedia.org/wiki/Atom#History_of_atomic_theory_and_discovery_of_atomic_structure Interesting...I never knew that until I read it.

1. microeconomics

the whole question didn't post, oops. What is the biggest difference between the marginal revenue curve for a monopoly and a monopolistically competitive firm? Select one: a. The MR curve is the same as the demand curve in the long run b. Because of

posted on April 24, 2019
2. math riddles for 7th grade

I hate this it does not tell the answer

posted on April 1, 2019
3. Math

lick it bro

posted on February 21, 2019
4. HELP!

a

posted on February 15, 2019
5. Social Studies

I think he cp and pt

posted on February 4, 2019
6. English

thanks so much

posted on November 19, 2018
7. Social Studies/ History

thx!!!!!!! i got 100

posted on October 28, 2018
8. math

no

posted on January 30, 2018
9. Language Arts

its badc trust me guys you will never know me is 100 percent WRONG

posted on October 12, 2017
10. History8

true

posted on September 14, 2017
11. math/ratio tables

18

posted on October 4, 2016
12. math

When a trinomial is factored as (x + m)(x + n), what is the sum of m and n? A. The coefficient of the x-term of the trinomial B. The constant term of the trinomial C. The degree of the trinomial D. The coefficient of the x2-term of the trinomia

posted on March 19, 2015
13. Algebra 2

When a trinomial is factored as (x + m)(x + n), what is the sum of m and n? A. The coefficient of the x-term of the trinomial B. The constant term of the trinomial C. The degree of the trinomial D. The coefficient of the x2-term of the trinomial

posted on March 19, 2015

Butt

posted on February 5, 2015
15. Anthropology

b d

posted on November 26, 2014
16. Biochemisty

Yuh

posted on November 13, 2014
17. math

i no

posted on March 10, 2014
18. science

m

posted on February 27, 2014
19. math

Shawn bought a home for \$100,000. He put 20% down and obtained a mortgage for 30 years at 5½%. What is the total interest cost of the loan?

posted on March 28, 2013
20. unit rate

112/8=14

posted on April 5, 2011
21. writting skills

2. In the metaphor of language as a layer cake given in your study unit, which of the following words could be considered to be a frosting word? A. Frequently B. Occasionally C. Honestly D. Prescient

posted on February 15, 2011
22. stoichiometry

10 g Cl2 / 71 g/mol /1 (balanced equation) = 0.141 Still the limiting reactant\ MgCl2 is still 13.4 Sorry!

posted on September 11, 2009
23. stoichiometry

Mg + Cl2 -> MgCl2 5.00 g Mg / 24 g/mol / 1 (from balanced equation) = 0.21 10.0 g Cl2 / 71 g/mol / 2 (from balanced equation) = 0.070 Smallest number is limiting reactant = Cl2 Yield = 10.0 g Cl2 / 71g/mol X 1 mol MgCl2/1 mol Cl2 X 95 g MgCl2/mol = 13.4 g

posted on September 11, 2009
24. Chemistry II

(NH4)3PO4 has 3 NH4 ions and 1 PO4 ions. Add them together to get i = 4

posted on September 9, 2009