# Posts by samuel

Total # Posts: 305

Science
4g of an organic compound gave 2.34g of carbon 0.16g of hydrogen 0.46g of nitrogen 1.04g of oxygen.what is the empirical formula

math
Formula 22

PHYSICS
gn elastic cord can be stretched to its elastic limit by a load of 2N. if a 35cm length of the cord is extended 0.6cm by a force of 0.5N, what will be the length of the cord whem the stretching force is 2.5N

Life oriantetion
For 5 interview questions

ART Check
Thanks!!!

physics
force=m*a 4000-300=3m/s2*m m=1233.33kg

math
During the summer holidays,your brother earns extra money mowing lawns.He mows 6 lawns an hour and has 21 lawns to mow.How long will it take him?

math
A diver on a platform 40 feet in height jumps upward with an initial velocity of 5ft/s. His height in h feet after t seconds is given by the function h=-16t^2+5t+50. a. What is his maximum height? I got 50.39 b. How long will it take him to reach the surface of the water? h=-...

Math
I have the same problem as Marita. Can someone tell us what equation to use. Horizon has a cell phone plan for \$28.00 per month plus \$.30 per minute with unlimited anytime network minutes and a free flip phone for new customers. How do I put this in an equation. Sprint has a ...

physics
isolate for f 1/di = 1/f - 1/do show all the steps pls

physics
isolate for t s = ut + 1/2at^2 please show all ur steps  

physicss
state the precision of the measured quantities 1. 0.07 m 2. 908 s 3. 7.60 L 4. 0.005 0 mm answers: 1. 0.01 m 2. 1 s 3. 0.01 L 4. 0.0001 mm i do not understand this , please explain it to me

physics
noo the answer is 1g and 0.01cm

physics
state the precision of the measured quantities 1. 353g 2. 6.00cm please explain

algebra 1
a heavy freight train made a trip of 360 miles, running part of the distance at 54 miles an hour and the rest at 48 miles an hour. if the entire trip took 7 hours, find the distance traveled at each rate

Ap Chemistry
Even if delta G is greater than zero, removing products in a process will cause the equilibrium to shift and produce some more products to make up for the products that were removed.

World History
I believe its B

physics
a force of 1600N is used to push a crate of brick at a rate of 40m/s squard. If the crate weights 150kg, how much do the bricks weight?

math
i got it its 11

math
WHAT????????????????

math
Camp Oaks gets 32 boxes of orange juice and 56 boxes o apple juice.Each shelf in the cupboard can hold 8 boxes of juice. What is the least number o shelves needed for all the juice boxes?

math

math
C??????????????????????????????????

math
FORGET ABOUT A, NOW I THINK IT IS B

math
There are 6 muffins in a package.How many packages will be needed to feed 48 people if each person has 2 muffins? A.4 B.8 C.16 D.24

math
If the wheel of a bicycle has a diameter of 60cm, calculate how far a cyclist will have travelled after the wheel has rotated 100 times.

Algebra
A. "Solve for w: (6w+1)/5≠2. Describe the solution in set notation." First I must find what number to substitute for "w" that WILL equal 2, correct? Then, determine the numbers that won't (I assume there will be far more of these)? What would be ...

Economics
Can someone help me with #1 - a,b,c it is on economics20145.weebly

English
''Nor was' is not necessary.

English
Yes, nor is a transition word.

English
Last Monday, Patrick Maloney was killed, but there were no suspects nor a murder weapon found.

int.science
True

science
'Imagine there is a tank of unknown gas that contains 53.31% carbon, 11.18% hydrogen, and 35.51% oxygen by mass. At 35.0 °C and 0.455 bar, 2.00 L of the gas has a mass of 3.20 g. Using this information, answer the following questions. a.) What is the empirical formula ...

science/math
I ncvvudvbsufdbfduwgbg,isuheurgiihdgilhgr and kill

science/math
F. Die udkler nv I. F,nib. K.rtb. Nothing hafb

math
The machining center at a production facility has three lathes of differing ages and thus precision. The oldest, machine A, produces finished units of product of which 88% are good, 8% are blemished, and 4% unusable. Machine B produces 92% good, 6% blemished, and 2% unusable. ...

Physics
A wind is blowing with a speed of 50 mph is a direction 40 degrees west of north. What is the westerly component of the wind's velocity? What is the northerly component of this velocity?

BIOLOGY
A reference calls for the use of "one litre of 0.1 molar acetate buffer pH 5.2” Calculate the amounts of sodium acetate and acetic acid required to make up this buffer, given that for acetic acid Ka = 1.8 x 10-5

L.o
List four factor that could threaten or limit core functions of the media

Thank you!

Never mind, I've figured it out. Thank you for looking over this question though.

Lana woke up, curled in a corner of the seat at the back of the train. She lifted the shade to see that the sun had hidden itself in a bank of clouds fluffy as the eiderdown her mother had wrapped her in as a child. Her darling Ted, a military man with a distinguished career, ...

Math
2 vertices of a triangle are 1,-4 and 6,-4. List 2 possible coordinates of the third vertex so that the triangle has an area of 20 units.

English
Why traditional african marriage is an advantage for men only not, women

College Physics
The point charges in Figure 17.41 are located at the corners of an equilateral triangle 25.0 cm on a side, where qb = +12.0 µC and qc = -4.50 µC. (Assume that the +x-axis is directed to the right.) (a) Find the electric field at the location of qa. Magnitude ? N/C ...

Mg>reduction cu>oxidation

Math
7/2

finite math
The Megabuck Hospital Corp. is to build a state-subsidized nursing home catering to homeless patients as well as high-income patients. State regulations require that every subsidized nursing home must house a minimum of 760 homeless patients and no more than 1100 high-income ...

Physics
VERY URGENT- A kicked ball takes off at 25m/s at an angle with the ground. If the goal is 50m away and the horizontal bar is 3.44m above the ground, what must be the elevation angle for the kicker to score a goal?

math
From a survey of 100 college students, a marketing research company found that 65 students owned iPods, 35 owned cars, and 25 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?

chemistry
will iron rust if it is placed in a test tube of ethanol acid with no water inside. Explain

science
thanks guys

physics
I am having a bit of trouble with this one. A safety harness is connected to a cable with a report breaking stress of 800MNm-2. What mass could be hung from a harness if the diameter of the cable was 6mm?

math
In the figure, p || q and r is the transversal. If OA and OB are bisectors of the interior angles, which of these describes angle AOB?

ece
its b cuz of course you cant read unless you know how to sound out words

physics
dont get it

physics
A cube of balsa wood (side length = 0.25 m) is tied with a string to the bottom of a waterfilled container. The wood is completely immersed. What is the tension in the string?

chemistry
the molarity of 2% by weight of aqueous solution of H2S4(molecular weight = 98)

science
5.0g of magnesium metal reacted with 1000cm3 of 4.5M HCl solution to produce hydrogen gas. Calculate the amount of HCl left after the reaction

Chemistry
Wha volum of steam is produced when log of propyrie is burnt in excess oxygen at s.t.p?

physics
2 balls of clay , the first of mass 0.5kg,the other of mass 0.75kg approach each other ,each travels with a velocity of 0.5m\s,after the collision they stick together,what is the total energy after collision .Obtain the coefficient of restitution.

math
the bearing of Y from X is 160¤ and the bearing of Z from Y is 060¤. find the bearing of X from Z.

math/physics
Estimate the percentage savings in the fuel bill if the thermostat is set back from 68 degrees F to 50 degrees F for 12 hours of the day, and left at 68 degrees F for the other 12 hours, assuming an outside temperature of 15 degrees F all day.

L.O
5 ways in which the human or environmental problem impacts on the community.

Math
A track of mass 1000 kg travelling on a straight level road accelerates from a speed of 10 m/s to a speed of 30 m/s in 12 seconds. Given that the engine of the track exerts a constant pull of magnitude P N and that there is a constant resistance to motion of 200 N, find the ...

Science
abiotic

Maths
The solution is about the number of divisors of each number from 1 to 99 and we will exclude 100 as he said they should be positive integers. so we will add them to get 473. A quick formula to calculate the number of divisors is for example 18=2^1 * 3^2 then no.of divisors ...

If the base is 12cm and a height of 15cm then the area is?

if the height of a triangle is 28cm and the base is 16cm then what is the area?

Physics 11 - Dynamics
While standing on a horizontal frictionless surface a 50.0 kg student pushes against a wall with an average force of 125 N to the right for 0.110 s. Calculate the velocity of this student at 1.110 s. My answer: Vf = 0.275 m/s My solutions book has Vf = -0.275 m/s OR 0.275 m/s ...

Physics 11
If two objects weighing 5 kg and 7 kg are dropped from a height of 64 m and 36 m, respectively. What will be the ratio of times taken to reach the ground? Thanks.

Physics 11
Displacement is given by x=2+3t+4t². Find the value of instantaneous acceleration.

Physics 11
Great. Thanks a lot.

Physics 11
A man jumps from a great height and falls freely to the Earth. Another man jumps from the same height 1 s later. How much are the two men separated by, 2 s after the second man jumps? I'm not sure exactly how to tackle this question. I'm sure I'm making it more ...

scale drawing
1cm^2 ----

physics
The relative Density of an alloy is 65.(a) find the mass of a solid alloy cube of side 20cm.(b) what vol of the alloy has a mass of 13kg? Please explain in details

science
An empty relative density bottle weighs 25g.it weighs 65g when filled with a liquid and 75g when with water.caculate the density of the liquid.

algebra
Determine whether or not the relation is a function. (-3,6), (-2,7, (-1,8), (0,9)

physics
A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of the system and the ...

Math
The scale on a globe is 1/8 of an inch equals 125 miles. How many inches is the circumference of the globe if the diameter of the Earh is 7,926.41 mi?

Algebra
A rectangle is drawn so the width is 7 inches longer than the height. If the rectangle's diagonal measurement is 46 inches, find the height.

science
what is the alelles of a tall plant.

physics
23.4

Physics
A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.

math
f(24)=1/2(24)+5

ap chemistry :(
consider the reaction C6H14 + 9.5O2 yields 6CO2 + &H2) at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no work is done as the ...

College Physics
Assuming that accelerations is constant, Given: a=15 ms^-2, s=14.1 m Applying kinematics equation, v^2 = u^2 + 2as Find for u since v is 0, u= sqrt(2 x -15 x -14.1) = 20.78 Solve for t, s= ut + 0.5at^2 14.1= 20.78t + 0.5(15)t^2 //Solve quadratic eqn for t t= 0.564(Ans), -3.33(...

Math
how did you get 4/5 lan?

Math
Use a ratio to compare the values. Simplify the ratio. 5 m to 100 cm the ansere is 5:1 those questions are from k12

math
what is 3/4 of paper in inches when 100 sheet of paper equal 3/10 inches

Precalculus
Assume the two planes are heading 'towards P'. For now, let's not get too wound up about the x and y aspects. We'll always 'know' the two places are at right angles to each other. First let's create two equations that represent the 'location'...

American Government
Voice. It was a public process but was done by voice.

math
a wheel is making 300rev/min about its center, calculate the angular velocity of any point on the wheel about the center. also find the speed of a point at a distance of 2cm from the center.

maths
at a given instant two cars are at distances 300 and 400m from the point of intersection O oftwo straight roads crossing at a right angle and are approaching O at uniform speeds of 20 and 40m/s respectively. find the shortest distance between the cars and the time taken to ...

maths
two ships are steaming in opposite directions at 30 and 40km/h respectively, and when they are directly abeam a shot is fired from one. if the gun at rest gives a muzzle velocity of 800m/s. find the direction in which it must be fired to hit the other ship. gravity being ...

math
what rate of annual simple interest is equivalent to 9% per annum compounded semi-annually for 3 years

Geometry
If measures of two complementary angles are in the ratio 1 : 5. What are the degree measures of the two angles? Thanks :)

How do you
Thankyou very much :)

How do you
Write the standard equation for the circle center (–6, –8), that passes through (0, 0). How would someone do this? I have been looking through all my notes from class and I don't understand how to do it.

math
72/8=9 He has spent 1 out of 9 so he has 8/9ths of his money left.

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