# Posts by Meagan

Total # Posts: 71

physics
A 15 kg crate is pulled at constant speed a distance d= 5.7m up a frictionless ramp, to a height h of 2.5 m above its starting point. a) What force F must the cable exert on the crate? b) How much work is done on the crate by the force F?

physics
In 1896 in Waco, Texas, William Crush of the “ Katy” railroad parked two locomotives at opposite ends of a 6.4 km track, fired them up, tied their throttles open, and then allowed them to crash head-on at full speed in front of 30,000 spectators. Hundreds were hurt ...

physics
Two industrial spies slide a floor safe 8.5m along a straight horizontal line toward their truck. The push (F1) of the Spy 001 is 320 N, directed at an angle of 30 degrees downward from the horizontal; the pull (F2) of Spy 002 is 250 N, directed at 40 degrees above the ...

Physics
In the figure below, m1 = 10.9 kg and m2 = 3.7 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60, and the coefficient of kinetic friction is 0.30. (a) If the system is released from rest, what will its acceleration be? (Enter the magnitude of...

DC Chem
calculate how many grams of the products listed would be produced by complete reaction of 0.160 mol of the first reactant. AgNO3(aq) + LiOH(aq) → AgOH(s) + LiNO3(aq) AgOH

geometry
the side of a triangle are 7,16,18. find the longest side of a similar triangle whose shortest side is 7.5.

math
i need to keep my a+ in math, and finish my homework TONIGHT. What is 5/8, 5/9, and 5/10 in least to greatest.

Chemistry
If an electric discharge produces 800 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g)

physics
Gas is contained in a 6.00-L vessel at a temperature of 15.0°C and a pressure of 6.00 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules are in the vessel?

physics
A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.80 atm. Assume the volume of the tank and the temperature of the gas remain constant during this ...

physics
Gas is confined in a tank at a pressure of 12.7 atm and a temperature of 22.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 79.0°C, what is the pressure of the gas remaining in the tank?

physics
A sample of lead has a mass of 69.00 kg and a density of 1.130 104 kg/m3 at 0°C. (Assume the average linear expansion coefficient for lead is 2.900 10-5(°C−1).) (a) What is the density of lead at 80.00°C? (Give your answer to four significant figures.) (b) ...

Biology
can someone please help me with this question because I'm having a really hard time with this question.

Biology
List all the structures that every cell, regardless of type, must have.

biology
Julie took her lunch to work every day. She wanted to know what type of insulation would keep her lunch the coolest. Each day, she took her lunch in a different container: a Styrofoam cooler box, a plastic cooler box and a soft insulated lunch bag. She measured the temperature...

Physics
Lol first of all nicole, Im not even in florida. Second of all, I'm trying to get help on these questions, you tit, I specifically asked for someone to show me how to solve it so i can do it on my own so bite me.

Physics
Help with Physics homework Please and thank you!? I need help on these two questions. I'm not looking for the answer because I really need to learn how to do this on my own. But if someone could show me what equations to use to answer the steps in the questions and explain...

physics
The object starts at -A, travels past zero to A--at which point the object has traveled the distance 2A. It must then travel back to complete the cycle of motion giving it a final distance of 4A

analytical geometry
make a full analysis of algebraic equation of y=(x-2)^2(x^2-9)

pysics
A ball is dropped from the roof of a building. How fast is it moving after 4.5 seconds? (Absolute value)

Physics. Please please help!
Nevermind, that'd be my error. Read it wrong

Physics. Please please help!
Elena, Im a little stuck on the first equation you have given. In the denominator, we are supposed to multiply r1 by r2. How did you get 20 x 10? Shouldn't it be 0.1m x 0.02m?

Chemistry
A and C

Math Question 2
i need to noe the factors of 63. im doing math hw

healthcare reimbursement
What is the difference between hospital claims processing and professional (provider and/or CMS 1500) claims processing?

statistics
When someone buys a ticket for an airline flight there is a 0.0995 probability that the person will not show up for the flight (based on data from the IBM research paper by Lawrence, Hong, and Cherrier). An agent for Air America want to book 24 persons on an airplane that can ...

Chem
Zinc reacts with HCl to produce ZnCl2 and Hydrogen gas, H2. What volume, in ml of a 1.25 M solution would be required to completely react with 3.27 g of Zn? Zn(s) + 2 HCl (aq) -------> ZnCl2 + H2

physics help!
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 155 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2. The magnitude of the...

physics
A thin uniform rod is rotating at an angular velocity of 7.70 rad/s about an axis that is perpendicular to the rod at its center. As the figure indicates, the rod is hinged at two places, one-quarter of the length from each end. Without the aid of external torques, the rod ...

physics
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 408 N walk on the overhanging part of the plank before it just begins to tip?

physics
Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 408 N walk on the...

physics
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is ...

physics
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 59 cm and is wrapped around the top at a place where its radius is 1.9 cm. The thickness of the string is negligible. The top is ...

physics
A 4.15-g bullet is moving horizontally with a velocity of +369 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...

physics
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air ...

physics
got it already thanks

physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 95 kg. The mass of the rock is 0.34 kg. Initially the wagon is rolling forward at a speed of 0.50 m/s. Then ...

physics
A 4.15-g bullet is moving horizontally with a velocity of +369 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...

physics/ 2D motion
A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

physics (please help!)
A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

physics
if a ball is thrown down at an inital speed of 22 m/s, what will be its position after 2.8 seconds? acceleration is 9.8 m/s squared

physics
Thank you so much!

physics
if a ball is thrown into the air at a speed of 22 m/s what is its position after 2.8 seconds?

chemistry
calculate the heat released for 5.00 grams if H2O cooling from 99 degrees celcius to 22 degrees celcius in joules and calories

Chemistry
Based on the steps occurring in an acid-base reaction, which definition of acids and bases is most practical? Give three reasons for your choice.

algebra
Find the volume of a cube whose side measures four x to the seventh power.

PHI
what am I suppose to answer here. The main point of this argument or what? I have never answer a question about analyzing the flaw? What does that mean, what should I be looking at? is is for mistakes in the arguments or what? Thank you

10th grade
well first you find how many coins there are in all. In this problem the entire amount is 6 coins, 3 of the 6 coins are dimes, if you pull out one dime there are now 2 dimes out of 5 coins ( because you took one away) so the answer would be two out of five chances.

computer science
Given an equilateral triangle with different charges namely charge on A is negative 4nC; B is positive 2nC and C is 1nC. The sides are all equal with 20cm. How can you calculate the resultant field on A; the mutual potential energy of the system?

Math
Solve for: cos (2 theta) = 2 - 2 sin^2 (theta)

math
2/3

algebra
2m-1=3m what is the first step needed to solve this

Math
what is the simplest form of 6/15, 15/60,and 78???????

6th grade
Because particles or molecules are always moving!!!

Alegra II
He Has Snow Brains

math
3/5 of the members of a hiking club went on the last hiking trip. if 39 people went on the last hiking trip how many are in the club?

Spanish
Use direct object pronouns in this sentence. Mi consejero académico me hizo unas sugerencias.

Physical Science
Can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly.

Physical Science
I am sorry, this is homework but this is all that is on each statement.

Physical Science
I am sorry, this was all I had on the puzzle and it is homework that I had in Physical Science.

Physical Science
Non of those work because I'm working on this crossword puzzle, and the word is 8 letters long and ends with a D.

Physical Science
Exact, agreed-upon quantity used for comparison.

Physical Science
I accidently typed in my next question in the wrong thing.

Physical Science
Can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly.

Physical Science
Application of science to help people

Statistics
It costs you \$10 to draw a sample of size n=1 and measure the attribute of interest. You have a budget of \$1,200. a. Do you have sufficient funds to estimate the population mean for the attribute of interest with a 95% confidence interval 4 units in width? Assume stdeviation(...

Algebra
A sudden debt payoff

social studies
what was used to stuff the nose of a mummy

5th Grade Math
how do you do metric measurement

social studies
Carpenters

Calculus
There is a sign that is 10ft on one side and 15ft on the other side (from the ground to the base of the sign), the billboard itself is 20ft. The painter brings a 25ft ladder in length. If the patch of ground 10ft from the base of the sign is used, at what point will the ladder...