# Posts by John

Total # Posts: 8,589

domestic violence
why might it be necessary to remove a possible suspect right away from the scene and hold them involuntarily for evaluation at a mental health facility?

public speaking
when speaking about abstract concepts, make them concrete ti the audience by?

chemistry
What would be the final concentration of [K+] if we mix 0.234 L of a solution with a concentration of 1.2M K2CO3 with 312.5 mL of a solution with a concentration of 0.32 M K3PO4

chemistry
Calculate the volume of solution needed to obtain 0.320 mol of KCl from a solution with a concentration of 0.64 mol dm-3

College Algebra
In china, the number of sport utility vehicle sold in 2003 was predicted to grow by 30% annually for the next 5 years. what is the doubling time?

Physics
.23 meters

chemistry
If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.

Biology
If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.

math
@other John ....cuz S shows up 2 times.....

math
Marissa, how did you get 7 total letters? There are only 6 letters

3
bobby is in the hospital with two broken nees

physics
The figure shows a nozzle on a hose carrying water. If the pressure at Point 1 is 290 x 10^3 Pa, the velocity 0.64 m/s, and the diameter 20 cm. Given that the diameter at point 2 is 1.4 cm, what is the velocity at point 2? v_2 = What is the pressure at point 2? P_2 =

Bob buys a house for 150,000 with a mortgage rate of 5.8% convertible monthly. At the time of purchase he owns a 10,000 20-year zero coupon bond that earns 4.5% annually. The bond matures in 15 yeas. He would like to use the proceeds from the bond to make a payment larger than...

Math
In a survey of 280 college students, it is found that 67 like brussels sprouts, 93 like broccoli, 60 like cauliflower, 26 like both brussels sprouts and broccoli, 21 like both brussels sprouts and cauliflower, 20 like both broccoli and cauliflower, and 10 of the students like ...

chemistry
What are strongest intermolecular force in hydrogen iodide ?

Statistics
Sorry to ask another question but I keep struggling with this class. If all else remains the same, which of these will make a confidence interval for a proportion narrower? I. Increase the confidence level. II. Increase the sample size. III. Increase the margin of error. A. I ...

Statistics
Which of these statements is always true for a researcher who is using standard statistical methods in a test of significance? A. A researcher who rejects a true null hypothesis has committed a Type II error. B. A researcher who rejects the null hypothesis has computed a test ...

math
Enrique charges \$5 for every 1/5 hour he spends walking dogs. In the morning he walks Buttons for 2/5 hour, Bruno for 1/5 hour, and Pepper for 3/5 hour, Monday through Friday. On Saturdays he takes Mimi, Diva, and Coco to the dog park for 4/5 of an hour. On Wednesday this week...

math
thank you just wanted to clear it .thanks to clear my doubth

math
36/1.5 = ? how to divide this

math
There are 50 big cats in the zoo.  2/5 of them are tigers.   1/5 of them are leopards. The rest are lions. How many lions are there in the zoo?

math
kevin bought a 3-foot sandwich for his .Hew figured out that each guest can have 1 1/2 inches of the sandwich . HOW MANY guest does kevin have

College Physics

physics
Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume? please help

statistics
Consider a binomial experiment with 20 trials and a probability of 0.45 on a single trial.Use the normal distribution to find the probability of exactly 10 successes.

physics
What is the momentum of the 200 g cart BEFORE the collision (LEAVE OUT units of kgm/s)? please help.

physics
if the cart in the last question collides INELASTICALLY with a stationary cart of mass 150 g, what is the kinetic energy of the carts after the collision (LEAVE OUT units of J)?

Physics
2.3 meters in 6 meters per second

Investment interest
Scenario: A client comes to you for investment advice on his \$500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his investment. ...

Physics
497.67

Karen nice job

Language book
Hi i need help with this book called as for me and my house could you help me with this question When mrs. Bentley decides to plant a garden, the main problem is that according to propriety the mistress of the parsonage should not ___________ a.sow b.weed c.water d.dig Thanks ...

Well i also learned this so i got the same question from my school and the answer was they are all metals. Its 100% right

Biology
Are my answers correct? 1. What term describes the relationship of the ankle to the hip? Medial Proximal Distal this one Superior Anterior 2. What term describes the relationship of the nose to the mouth? Superior- this one Deep Anterior Inferior Superficial

Calculus
17

physics
An outfielder throws a 1.65 kg baseball at a speed of 59 m/s and an initial angle of 14.2◦. What is the kinetic energy of the ball at the highest point of its motion?

Finance
Cindy has an income of 56,000 in year 0. Calculate her income in year 1 if she wants to consume 40,000 in year 0 and 27,000 in year 1. Assume that the interest rate is 1.5 % per year.

Life orientation
student drop outs rates alarming

research
What are the pros and cons of disguised observation?

chemistry 1
DDT concentrations in ground water. How do you set it up with a sample size of 250.0mL and the mass of DDT at 0.030 and then convert to millimoles. Just can't remember how to set it up.

Math
Thank

Math
How to set up an equation for this problem? Thank you.

Math
Mr. Bailey mowed his yard in 90 minutes. His son Roy mows the yard in 75 minutes. How long will it take them if they work together (using 2 lawn mowers)?

algebra
Brandon hit a baseball upward with an initial speed of 120 feet per second. How much later did Ollie catch the ball? Use the formula h = -16t squared + vt.

Physics
A ball is dropped from a height of 1.45m and rebounds to a height of 1.21m. Approximately how many rebounds will the ball make before losing 92% of its energy?

math
a telephone pole is 64 feet long and 5/16 of the pole must be underground a) what fraction of the pole is above ground

Precalculus
A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40 cos t and y=-50 + 30 ...

Precalculus
That's wrong :( It's not 2pi/3 or pi

Precalculus
Let G be the graph of the parametric equations x=cos(4t)and y=sin(6t). What is the length of the smallest interval I such that the graph of these equations for all t in I produces the entire graph G?

Precalculus
-9 is incorrect, sorry. The answer is also not 6 or -6

Precalculus
Find the sum of all possible values of the constant k such that the graph of the parametric equations x=2+4cos(s) and y=k-4sin(s) intersects the graph of the parametric equations x=1+cos(t) and y=-3+sin(t) at only one point.

Precalculus
Find the sum of all possible values of the constant k such that the graph of the parametric equations x=2+4cos(s) and y=k-4sin(s) intersects the graph of the parametric equations x=1+cos(t) and y=-3+sin(t) at only one point.

Precalculus
Let G be the graph of the parametric equations x=cos(4t)and y=sin(6t). What is the length of the smallest interval I such that the graph of these equations for all t in I produces the entire graph G?

Precalculus
A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40 cos t y=-50 + 30 cos t ?

Math
Another variety of R&Ns has a different set of magical (yet mathematical) properties. Remove exactly 4 candies and 1 additional candy appears in the bag. According to the package, a bag contains 50 candies. What is the maximum number of canies that this variety of R&Ns will ...

Math
R&N is a new candy with magical (yet mathematical) properties. Not all candies are the same size. When removing the largest R&N from a new bag, the bag becomes 1/2 full; removing the second largest makes the bg 1/3 full; removing the third largest makes it 1/4 full, and so on...

Math
Another variety of R&Ns has a different set of magical (yet mathematical) properties. Remove exactly 4 candies and 1 additional candy appears in the bag. According to the package, a bag contains 50 candies. What is the maximum number of canies that this variety of R&Ns will ...

Math
R&N is a new candy with magical (yet mathematical) properties. Not all candies are the same size. When removing the largest R&N from a new bag, the bag becomes 1/2 full; removing the second largest makes the bg 1/3 full; removing the third largest makes it 1/4 full, and so on...

Science
1.92816E24

Math
Another variety of R&Ns has a different set of magical (yet mathematical) properties. Remove exactly 4 candies and 1 additional candy appears in the bag. According to the package, a bag contains 50 candies. What is the maximum number of canies that this variety of R&Ns will ...

Math
R&N is a new candy with magical (yet mathematical) properties. Not all candies are the same size. When removing the largest R&N from a new bag, the bag becomes 1/2 full; removing the second largest makes the bg 1/3 full; removing the third largest makes it 1/4 full, and so on...

Chemistry
When 10.00g of phosphorus is burned in O2(g) to form P4O10(s), enough heat is generated to raise the temperature of 2990g of water from 18.0 ∘C to 38.0 ∘C. Calculate the heat of formation of P4O10(s) under these conditions. -------------------------------------- ...

Finance
i don't know

Math
Another variety of R&Ns has a different set of magical (yet mathematical) properties. Remove exactly 4 candies and 1 additional candy appears in the bag. According to the package, a bag contains 50 candies. What is the maximum number of canies that this variety of R&Ns will ...

Math
R&N is a new candy with magical (yet mathematical) properties. Not all candies are the same size. When removing the largest R&N from a new bag, the bag becomes 1/2 full; removing the second largest makes the bg 1/3 full; removing the third largest makes it 1/4 full, and so on...

math
mollly uses 192 beads to make a necklace and a bracelet. it takes 5 times as many beads to make a necklace than it does to make a bracelet. How many beads are used to make the necklace?

english
1.Virtual reality systems can be used to train pilots, doctors, and engineers. These systems are seen most often in video games. 2. a head-mounted display is made of a headset with a screen for each eye. the display connects to a computer. 3. a tracking device senses the eye ...

Math
John is designing a redwood deck. each board is 5 1/2 inches wide, and each will be placed parallel to one another. Should he use 3/16 inch, 1/4 inch, or 3/8 inch spacing between boards if he wants the deck to be as close as possible to, but not greater than, 18 fet wide? How ...

Math
A carousel at Playland, contains 38 horses. each carousel ride takes 4 minutes, riders need 3 minutes to exit and newcomber require 3 minutes to pick a horse and hop on. A carousel ride costs \$0.75. The carousel makes \$88,239.00 a year. How many horses are occupied per ride, ...

Math
What is the maximum number of intersections that can be formed by n lines?

math
Another variety of R&Ns has a different set of magical (yet mathematical) properties. Remove exactly 4 candies and 1 additional candy appears in the bag. According to the package, a bag contains 50 candies. What is the maximum number of canies that this variety of R&Ns will ...

Math
R&N is a new candy with magical (yet mathematical) properties. Not all candies are the same size. When removing the largest R&N from a new bag, the bag becomes 1/2 full; removing the second largest makes the bg 1/3 full; removing the third largest makes it 1/4 full, and so on...

nope for #10 it is A

Precalculus
In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF such that AB = DE, BC = EF, and angle A = angle D, then we cannot deduce that ABC and DEF are congruent. However, there are a few special ...

calculus
h(t)=tan theta (5pie/3,3pie) graph the function on the given interval

Chemistry
A gas at 54◦C occupies 4.54 L. At what tem- perature will the volume be 3.04 L, assuming the same pressure?

chemistry
A sample of helium gas has a volume of 328 mL at 0.69 atm. What pressure is needed to reduce the volume at constant temperature to 32 mL?

mat/116
WHATS THE EQUATION FOR THAT PROBLEM

Physics
You and some friends go bungee jumping, but you are afraid of oscillations which go too fast. Which one of these options would provide the slower oscillations? a) Tying two bungee cords to your feet such that each bungee cord is attached to your feet and the object which you ...

Math
209

Pre-Calc
One side of the barn counts as an enclosure.

Pre-Calc
A farmer is making a pig pen next to the barn. He has enough materials to build 50 feet of fencing. a)what is the largest area he can fence in? b)what are the dimensions of the pen with the largest area?

Math
Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function. -2x^4+4x^3+3x^2+18

math
1-tan^2 theta/1+tan^2 theta + 2sin^2 theta need to simply to sin and cos

Physics
344

Chemistry
So (650)(25)/248=353(x)/298 65.5241=.8441/(x) 55.3=x got it right thanks Dr.Bob

Chemistry
If a sample of gas occupies 25.0 mL at -25°C and 650 mmHg, what is the volume at 25°C and 353 mmHg? (Could you please show me step by step?)

Physics
sin^-1(y/x)

Physics
Calculate the gravitational force between the Sun and Saturn. The mass of the Sun is 1.99×1030 kg. The mass of Saturn is 5680×1023 kg. The distance between them is 143×1010 m. In Newtons

Math
I have \$35,000 in holding since 1997 earning an interest rate of 3%. How much is this worth today in \$

strayer university
The Lo Company earned \$ 2.60 per share and paid a dividend of \$ 1.30 per share in the year just ended. Earnings and dividends per share are expected to grow at a rate of 5 percent per year in the future. Determine the value of the stock: A. if the required rate of return is 12...

chemistry
2 nacl (aq) + h2so4 ==> na2so4 (aq) + 2 hci (g)

physics
if the capacitance meter applies a voltage of 3.0 V across the plates and reads a capacitance of 30 pF, what is the charge on the plates?

physics
A projectile is fired into the air from the top of a cliff of height h = 208 m above a valley. Its initial velocity is v0 = 55.2 m/s at an angle θ = 54° above the horizontal. Where does the projectile land? (Ignore any effects due to air resistance.)

physics
The surface density of a thin rectangle varies as: σ(x,y)= 14.0 kg/m2 + 9.00 kg/m4(x2+y2) The rectangle has a length L = 0.500 m and a width W = 1.500 m. Calculate Iz, the moment of inertia about the z-axis.