# Questions Asked onDecember 19, 2008

1. ## Math

The leaning tower of Pisa is 55.9 m tall and leans 5.5 degrees from the vertical. If its shadow is 90 m long, what is the distance from the top of the tower to the top of the edge of its shadow, assuming the ground around the tower is level?

2. ## Math

Two spotlights, one blue and the other white, are placed 6 m apart on a track on the ceiling of a ballroom. An observer standing on the ballroom floor sees that the angle of elevation is 45 degrees to the blue spotlight and to degrees to the white one. How

3. ## Physics

A speed trap is set up with two pressure-activated strips placed across a highway, 110 m apart. A car is speeding along at 33 m/s, while the speed limit is 21 m/s. At the instant the car activates the first strip, the driver begins slowing down. What

4. ## chemistry

why are BeF2, AlCl3 and BeCl2 covalent compounds and not ionic compounds?

5. ## Calculus

Let f be the function given by f(t) = 2ðt + sin(2ðt) a) Find the value of t in the open interval (0,20 for which the line tangent at (t, f(t)) is parallel to the line through (0,0) and (2,4ð) b) Suppose the given function describes the position of a

6. ## Math

Two fire towers, A and B, are 20.3 km apart. From tower A, the bearing of tower B is 70̊. The ranger in each tower observes a fire and radios the bearing of the fire from the tower. The bearing from tower A is 25̊ and from tower B is 345̊. How far is

Define and discuss the similarities and differences between routine and positive messages, negative messages, and persuasive messages

8. ## Physics

A ball is thrown straight upward and rises to a maximum height of 16 m above its launch point. At what height above the launch point has the speed of the ball decreased to one-half of its initial value?

9. ## English

1. What are you going to do tomorrow? I'm going to a concert. I am going to go to a concert. I will go to a concert. I go to a concert. (Are all answers correct?) 2. He ate a piece of toast. He ate a slice of toast. He ate a bit of toast. (Are all the same

10. ## Physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.0 m/s when going down a slope for 5.0 s? How far does the skier travel in this time?

11. ## chemistry

a vessel has 6 g oxygen at a pressure P & temp 400 K . a small hole is made in it so that oxygen leaks out . how much oxygen leaks out if the pressure is P/2 & temperature 300 K ? 1. 5g 2. 4g 3. 2g 4. 3g

12. ## calculus

Find the values of c that satisfy the Mean Value Theorem for f(x)=6/x-3 on the interval [-1,2]. Is it no value of c in that interval because the function is not continuous on that interval???

13. ## Math 115...Help am really lost

The graph and table below give the monthly principal and interest payments for a mortgage from 1999 to 2004. Use this information to predict the payment for 2005. Year Payment 1999 \$578 2000 613 2001 654 2002 675 2003 706 2004 730 2005

14. ## spanish

I know all of the spanish sports vocabulary, but I don't know how to put it in a sentence. For example, "I play tennis with a tennis racquet. We play golf with a golf ball. They play soccer with soccer balls." Thank you.

15. ## Reimbursement methodologies

You're reviewing reimbursement for a medicare surgical craniotomy case. the cae falls under DGR 1 which the relative weight of 3.0970 and a geometric mean lenght of stay of 6.3 the hospitals current standard reimburesment rate of \$1500.00 calculate the DRg

16. ## Psychology

Changing Perspective Paper Describe a situation that might be viewed differently by two people. This event can be as small as an encounter on the street or as major as the birth of a child. · Summarize how it could be viewed differently. How might

17. ## calculus

y=5/x-3 find the zeros,relative min and max.the max and min find the intervals on which yis positive or negative. on which y is decreasing.intervals y concave up or down.points of inflections

18. ## biology

Which of the following processes includes the other processes? a) passive transport b) active transport c) facilitative diffusion d) osmosis e) exocytosis

19. ## chem.

In the equation .. HCL + NaOH --> H2O + NaCl would the sodium chloride be aqueous or solid?

20. ## algebra

Solve 6.5x-2.1=3.9-3.5x

21. ## Physics

A ball and a barrel roll down a 16m-long incline of height "h." Assume I equals 2/5mr^2 for the ball I equals 1/2mr^2 for the barrel. Prove that the ball reaches the bottom first.

22. ## English

1. Her mother gave her a hot soup. 2. Her mother gave her hot soup. (Which one is correct? Do we have to use 'a' or not? Why?) 3. What is the difference between 'mouse and rat? Is a rat bigger than a mouse? 4. the sixth month (How do we pronounce these

23. ## pre-cal

show solution solve. 2sin^(2)x=2+cosx

24. ## biology

If gene A is at 48 map units and gene is at 54 map units- what is the recombinant frequency?

25. ## re

i need to make a poster for tourists in jesus` time for palestines. i have no idea what to do any ideas very helpful. happy christmas everyone!

26. ## Economics

The Bureau of Labor Statistics follows five steps to calculate Consumer Price Index. identify three strengths and three weaknesses of the calculation.

27. ## Accounting

In activity-based costing, an activity is any even, action, transaction, or work sequence that incurs cost when producing a product or providing a service. The selected activity is packaging and shipping of finished products to the purchaser. Identify the

28. ## natural logs

Solve for x: ln(x+1)+ 2 = x^2 – 8x + 12

29. ## biology

which of the following must be cycled through twice? a) Krebs Cycle b) Calvin Cycle c) Glycolysis d) Krebs and Calvin e) all of the above

30. ## Literature

I need clipart for a PowerPoint that I am doing on Charlie and the Chocolate Factory. I am having a time finding it. Can anyone suggest a site? Thank you

31. ## Accounting

What does it mean when the accumulated deficit on a balance sheet is a (loss)?

32. ## science

If a population has 28 Aa individuals and 24 aa individuals, what is the p frequency? this deals with the hardy weinburg equation. so i don't think this is right but i first found the q frequency. this was done by dividing 24/52 and then squaring that

33. ## Physics or Science?

Why liquid soap dispensed through a small spout by pressing on it, solidifies interfering with its smooth ejection? thanks so much for an answer! Pietra

34. ## English

Can someone let me know which is the correct answer and why? Thanks! Subject-verb agreement A 1a. Did you know a famous animal-rights activist has criticized horseracing because of the dangers involved? 1b. Did you know a famous animal-rights activist have