# Questions Asked onJuly 12, 2017

1. ## Calculus

If an arrow is shot upward on Mars with a speed of 54 m/s, its height in meters t seconds later is given by y = 54t − 1.86t2 (i) [1, 2](ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] (b) Estimate the speed when t = 1.

2. ## chemistry

Which of the following ions possess a dipole moment? (a) ClF2+ has a dipole moment has no dipole moment cannot be determined (b) ClF2− has a dipole moment has no dipole moment cannot be determined (c) IF4+ has a dipole moment has no dipole moment cannot

3. ## Physics

a particle moving in the xy plane has velocity components dx/dt =2t and dy/dt = 4. If the particle starts from the origin at t = 0,magnitude of its displacement at t=2 is

4. ## Science

If a car covers 2/5th of the total distance with V1 speed and 3/5th distance with V2, then average speed is?

5. ## Math

A bag of candy contains 11 peppermints, 8 chocolates,13 gumdrops, and 9 licorices. jack randomly takes a gumdrop from the bag and eats it. what is the probability that the next candy she takes will be a gumdrop or a peppermint?

6. ## Finance

A7X Corp. just paid a dividend of \$1.90 per share. The dividends are expected to grow at 22 percent for the next eight years and then level off to a growth rate of 6 percent indefinitely. If the required return is 13 percent, what is the price of the stock

7. ## math

Kate used 555 grams of wool to knit a sweater, a hat and a scarf. She used 5 times less grams for the hat than for the sweater. She used 5 grams more for the hat than for the scarf. How many grams of wool did she use to knit each item?

8. ## maths

What is the maximum number of coins that can be placed on squares in an 8x8 chessboard such that each row, each column, and each long diagonal contains at most 4 coins? (Note: Only 1 coin is allowed per square.)

9. ## chemistry kinetics

The rate constant is numerically the same for three reactions of first ,second and third order resp. Which reaction should be the fastest and is this for all ranges of concentrations ??

10. ## math

Sheila needs to hire a babysitter for the evening. The babysitter charges \$10 for each hour and also charges for the time she spends driving to and from the house. She thinks it will take 1.5 hours of total driving time. Sheila is willing to spend \$80 for

11. ## math

Of the bundles delivered daily to the store, 1/3 consists of the morning edition of The Daily Sun. Another 2 bundles are made up of the afternoon edition of the same paper. Of the remaining bundles, 1/2 is regional, one is a local newspaper, and one is

12. ## Math

The number of Roberto's baseball cards is 3/4 the number of David's cards. If Roberto gives 1/2 of his cards to David, What will be the ratio of Roberto's cards to David's cards?

13. ## physics

A falling stone take 0.2s to fall post a window with. Hight 1m from how far above the top of window stone dropped

14. ## chemistry

According to the following chemical equation: N2 + 3H2 → 2NH3 How many grams of hydrogen are needed to completely react with 28.0 grams of nitrogen?

15. ## Math

What is the unit cost per bottle if a pack of 4 bottles of juice sells for \$3?

16. ## math

Team one had twice as many workers as team two. The number of workers in team one is reduced by 5 and the number of workers in team two is reduced by 2. How many workers are there in each team now if there are 7 more workers in team one?

17. ## math

Three departments of a company employ a total of 1274 people. The second department employs 70 more people than the first one, and the third department employs 84 more workers than the second one. How many people work in each department?

18. ## Calculus

Give an example of a function that is integrable on the interval [-1,1], but not continuous on [-1,1]. Explain.

19. ## calculus 3

A pilot is flying a Cessna airplane at 180 mph (airspeed).He would like to fly in the direction N45W, but there is a 32 mph wind in the S60W direction.What direction should the pilot set his course for in order to fly along his desired track? What will his

20. ## Math

A particle moves along the curve x^2+4=y. The point on the curve at which the y coordinate changes twice as fast as the x coordinate,is

21. ## math

Team Alpha had one fourth as many people as team Beta. After 6 people quit team Beta and 12 people were transferred to team Alpha from team Beta, both teams became equal. How many people were there originally on team Alpha?

22. ## calculus 3

A pilot is flying a Cessna airplane at 180 mph (airspeed).He would like to fly in the direction N45W, but there is a 32 mph wind in the S60W direction.What direction should the pilot set his course for in order to fly along his desired track? What will his

23. ## science

Q.4a) an object is tied to a rope and moves in a horizontal circle. The maximum tension in the rope is 100N. The object has a mass of 37kg and the rope is 1.4m long. what is the angle of the rope with respect to the Horizontal? b) what is the speed of the

24. ## College Physics

A car of mass 1000 kg is traveling at a constant 25.0 m/sec along a straight, level highway. There is a force of thrust acting on it in the forward direction (the direction the car is moving) of 3000 N. There are drag forces and forces of rolling friction

25. ## Chemistry

"For 4HCl + O2 2Cl2 + 2H2O : If in a container of 1.0 L we start with 2 moles of O2 and 4 moles of HCl, the molar fraction of O2 is: a) x/5 - x/2 b) 1-x / 6+x c) 5x / 5-x d) 1-x / 5-x e) 2x / 6-x " I tried solving this, but I wasn't sure if all 2 moles of

26. ## math

Reduce the sum to lowest term possible 7/15+7/15+2/15

27. ## math

A player drawn a face card and a 3 and a 4 from a standard deck of cards (without an ace). According to the rules of blackjack a face card counts as a 10. What is the probability that the next card she draws will bring her total to 21 ? what is the

28. ## College Physics

A ball is thrown horizontally from the top of a building which is 30.6 meters tall. It lands 50.0 meters from the base of the building. What was the launch speed of the ball?

29. ## College Physics

A person of mass 65.0 kg is standing on the floor of an elevator. The elevator is accelerating upward at 1.50 m/sec2. What does the person weigh?

30. ## Physics

A person of mass 65.0 kg is standing on the floor of an elevator. The elevator is accelerating upward at 1.50 m/sec2. What resultant force acts on the person?

31. ## english

What is simple predicates and complete predicates of A king had a strange dream

32. ## Chemistry

What should be the pH value of the solution to double the solubility of the ionic compound NX? Ka of HX=2*(10)^-5 M My thoughts on the question: Let the solubility of NX=x M 1) NX(s) N+(aq) + X-(aq) eq:con: x x (moldm-3) X^- HX + OH^- -->(2) HXH^+ + X^-

33. ## General

A career that utilizes computers but is not considered an information technology based job. Please give at least 2 careers

34. ## College Physics

A mass m is acted on by a resultant force of 28.6 N in the upward direction. The acceleration of the mass is 5.72 m/sec2 upward. What is the mass?

35. ## Physics

Does the speed of sound in air depend on the frequency of the wave? V=[(gamma.RT)/M]^(1/2)

36. ## math

A university has 1500 students out of which 500 are history students, 800 are English students and 200 are both history and English students. Are the events of a student being an English student or a history student independent ?

Mary bought a house for RM 350,000 5 years before and paid a 10% down payment and took a 15 years bank loan for the remaining amount. The bank charges 4.38% p.a. compound interest on a reducing balance basis on property loans. Mary is to repay the loan by

38. ## English

What would you guys write? - Write a letter to the editor of a local newspaper commenting on a recent issue in the news. Explain your point of view.

39. ## College Physics

A mass of 50.0 kg is acted on by only two forces: Force 1 is 650 N to the right, and Force 2 is 520 N to the left. What is the acceleration of the mass in response to these forces?

40. ## English

What is the simple and complete predicates. She advised him to look for the singing bird. The eldest son asked permission to go. He believe that the he could catch the bird.