Friday
August 1, 2014

Posts by MIKE


Total # Posts: 3,158

Math
Thank you, I understood your first post. Good luck Will.

Math
If the lengths of two bases of a trapezoid are 10m and 16m respectively, then what is the length of the median

Russia Government
I was checking to see if my question had been answered on steps in doing a report on the Russia Government.

Russia Government
Need steps in doing a report on Russia government.

government
I am 7th grade. My report is on Russia government. How do you do a report on the Russia Gov't. I need steps to take in setting up a report on this subject.

physics
The following wave function represents a travelling wave: y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t is in seconds. a). What is the maximum displacement of the wave at t = 7.50 s ? b). what is the wave velocity? please explain more

physics
The following wave function represents a travelling wave: y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t is in seconds. a). What is the maximum displacement of the wave at t = 7.50 s ? b). what is the wave velocity? please explain more

physics
The following wave function represents a travelling wave: y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t is in seconds.a) What is the maximum displacement of the wave at t = 7.50 s ? b) what is the velocity.

Physics
The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes with resp...

Physics
A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time its velocity is 46.473 m/s. The acceleration of gravity is 9.8 m/s2 . The mass of the puck is 185 g. If the puck strikes the goalie’s pads and st...

Physics
The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes with resp...

Physics
The average speed of a Nitrogen molecule in air is about 858 m/s, and its mass is about 4.68 × 10−26 kg. If it takes 2.6 × 10−13 s for a nitrogen molecule to hit a wall and rebound with the same speed but in the opposite direc- tion, what is the magnitu...

Physics
The average speed of a Nitrogen molecule in air is about 858 m/s, and its mass is about 4.68 × 10−26 kg. If it takes 2.6 × 10−13 s for a nitrogen molecule to hit a wall and rebound with the same speed but in the opposite direc- tion, what is the magnitu...

English
How do any of the quotes below relate to the play A Street Car Named Desire by Tennessee Williams A good reputation is more valuable than money. Publilius Syrus (~100 BC), Maxims For all their strength, men were sometimes like little children. Lawana Blackwell, The Dowry of Mi...

smith
tom can mow a lawn in 4 hours. perry can mow the same lawn in 5 hours. how long for them to mow the lawn together?

spanis PLEASE PLEASE HELP !
Your friend asks you questions about everything he sees. Answer his questions as indicated. example: Es la casa de Manolo? Si, es su casa ES la casa de susana? No, no es su casa. 1) Son los hermanos de Anita Si, son sus hermanos 2)Son los padres de Felipe? No, no son sus padre...

spanish/help please
Your friend asks you questions about everything he sees. Answer his questions as indicated. example: Es la casa de Manolo? Si, es su casa ES la casa de susana? No, no es su casa. 1) Son los hermanos de Anita Si, son sus hermanos 2)Son los padres de Felipe? No, no son sus padre...

algebra
solve and give two answers X^2=44

history
How did Mikhail Gorbachev’s policies contribute to the end of the Cold War?

Math
Find an algebraic expression for f' f(x)= 2e^x+ pi f(x)=e^5-4e^x f(x)=e^x+x^e+e f(x)= e^pi +pi^x+ x^pi I didn't understand these at all

math
What I have found is that counters are inch diameter circles children use to visual help count so your child has to draw circles in the boxes that correspond to the number if it says 3 the your child makes 3 circles one in each box

french
what does Est-ce que les lunettes de soleil vont bien à dylan hayes mean???

PHYSICS
ummmm dude i did that it came out like . something . like what do you mean convert N?. please explain thankyou

PHYSICS
an arctic flying to antarctica encounters a storm. The term changes direction to fly around the storn. if the tern flies 46 km at 15degrees south of east , 22 km at 13 degrees east of south , and finally 14km at 14 degrees west of south what is the tern's resultant displac...

Physics
Given that electricity is priced at constant 13.5 pence per kWh and central heating oil (kerosine) varies in price between 39 pence and 137 pence per litre. What price does kerosine need to be to make heating domestic hot water cheaper using an immersion heater? Assume oil boi...

industrial hygiene
A worker is exposed to a hazardous material at a level that is about 2/3 of the allowable limit, yet is reporting symptoms consistent with exposure to the material. Explain this in terms of exposures and exposure limits, absorbed dose, sampling and analysis, individual factors...

Physics
tm= tp/√(1-(v2/c2)) (1.5*10-8) = tp/√(1-((2*108)2/(3*108)2)) (1.5*10-8) = tp/√(1-((4*1016)/(9*1016)) (1.5*10-8) = tp/√(1-(4/9)) (1.5*10-8) = tp/√(5/9) tp =(√(5)/3)(1.5*10-8) tp =1.118033989*10-8 on the 6th line, why does it become √(5)...

Calculus
so is it a stationary point then?

Calculus
but why is it not a minimum?

Calculus
thats supposed to be f(c)

Calculus
True or false If f'(c) = 0 and f9c0 is not a local maximum, then f(c) is a local minimum.

physics
Thanks a lot!

physics
a popgun uses a spring for which k = 20 N/cm. when!@#$%^&ed, the spring is compressed 3.0 cm. how high can the gun shoot a 5.0-g projectile

physics
a 500-g mass is attached to the end of an initially unstretched vertical spring for which k=30 n/m. the mass is then released, so that it falls and stretches the spring. how far will it fall before stopping? (the PEg lost by the mass must appear as PEe)

Precalculus
A tower casts a 235-foot-long shadow. If the angle of elevation from the tip of the shadow to the top of the tower is 66.3°, how high is the tower?

math
Convert 2 PSI to inches of H20.

math
Me too!

math
If a tank were blocked in (all inlets and outlets are closed) late in the evening with a temperature of 62F a pressure gauge attached to it would read an ambient pressure (14.7 PSIA). The next day, as the sun begins to shine directly on the tank, its inside temperature would b...

chemistry
a liquid that has a density of 22 g/mL and a mass of 16 g, how much of the liquid do you have in the container?

health
can you explain the question atleast?

health
how do you feel the portrayal of sex in the media influences the sexual desicions teens make today

Physics
An engineer claims to have measured the characteristics of a heat engine that takes in 130J of thermal energy and produces 40J of useful work. What is the smallest possible ratio of the temperatures (in kelvin) of the hot and cold reservoirs?

Physics
The oven draws 1100W of power, and you have determined that it heats with an efficiency of 51%. Using this information, determine the time t it would take to bring 240mL of water from 25C to 100C . Note that 4.2 J of energy is required to raise the temperature of 1.0mL of wate...

history
how did former president nixon pardon impact the united states?

ALgebra word problem
sorry. i dont really know

ALgebra word problem
one number is 6 more than another. their product is 91. what is the number?

Find the maximum value of this function
f(x) = 9 sqrt(x)e*(-x)

algebra
the length of a pool is 30 meters greater than the width. if the area is 1000 square meters, find the dimensions of the pool.

Spanish
14. c 15. i think its a

algebra
1. 100x^2-9 2. 8x^2+14x+6

math
Consumers pay for electricity by the kilowatt-hour (the amount of electricity used by a 1,000-watt appliance in one hour). If electricity costs 10cents per kilowatt-hour, what is the cost of running a 100-watt lamp for 1. 1 hour? 2. 24 hours? 3. 1 year?

Math
Consider the equation below. (Round the answers to three decimal places. If you need to use -infinity or infinity, enter -INFINITY or INFINITY.) f(x) = 9 sqrt(xe*^(-x) (a) Find the interval on which f is increasing. ( , ) Find the interval on which f is decreasing. ( , ) (b) F...

math
A ball is dropped from a height of 5 ft. Assuming that on each bounce the ball rebounds to one-third of its previous height, find the total distance travelled by the ball.

Evaluating limits
Evaluate the limit. (If you need to use - or , enter -INFINITY or INFINITY.) lim x +sin(x)/(2x+cos(x)) as x goes to 0.

L'hospital rule
Evaluate the limit. lim (cos(x))^(7/x^2) as x goes x-->0^+

Chemistry!
PV=nRT should be used

math
If a normal studentblinks 25 times per minute how old yould you be your next birthday?

math
the remainder is 3 and the answer is 44

algebra
1) 27x^3+8 2) 3x^2-x-4

algebra
Add. 5x^2-8x^3+3x-2 and 4x^3+5x^2+9-x

Math
12y^2+16-13 I cant seem to get the right answer please help

algebra
LOG5(X+7)=LOG3(X-4)+LOG3(X_2-LOG3 X=

algebra
(a-b)(a^2+ab+b^2)

math
thank you guys :) a lot

math
the circumference of a wheel is one yard. If the wheel is pushed half a mile, how many times will the wheel go around (1 mi = 5280 ft)

Social Studies
What were one cause and one effect of the American Revolution?

Physics
A spring is hung from the ceiling. When a coffee mug is attached to its end, it stretches 3.0 cm before reaching its new equilibrium length. The block is then pulled down slightly and released. What is the frequency of oscillation?

Organic Chem I Lab
DrBob222 how about some help here?

art
I have an image by Takashi Murakami.that I need a professional opinion for complete a detailed analysis of the image using all the visual elements and principles of design. The image is Tan Tan Bo Puking—a.k.a. Gero Tan (2002).

Physics
The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 6.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to reac...

chemistry
it only tells me that and that gypsum contains 2 moles of water for each 1 mole of calcium sulfate from CaSO4*2H20

chemistry
what is the percent composition by mass of water in a compound with a gram formula mass of 4905 g/mol

physics help please
a horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizantal, wood surface, as shown. A. Determine the mass of the box. B. calculate the magnitude of the acceleration of the box.[Show all work, including the equation and ...

need physics help
d=2.1 a=? vi=0 and t=.60 and i have to use the formula d=vit+1/2at^2, how do i do this? can you please show work so i can understand.

Microeconomincs
Find an article that deals with business impact on the environment. and i want to know what does business impact on the environment mean?

Math
I need Help in the study unit for pennfoster on The Accounting Equation please!!!!!!!!!!! THANK YOU

Physics
A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 48.4 cm oscillates in the m=100,000.0 mode. 1. What is the wavelength of the laser beam? 2. What is the frequency of the laser beam?

Physics
What is the longest wavelength for standing sound waves in a 108.0 cm long tube that is open at both ends? What is the second longest wavelength? What is the third longest wavelength?

Physics
since when did physics problems have to make sense

Physics
During the Olympic ice competition, Boris (m = 75 kg) glides at 1.8 m/s to a stationary Juliette (52 kg) and hangs on. How far will the pair slide after the “collision” if the coefficient of kinetic friction between the ice and their skates is .042? My answer: Conser...

Economics
# How can American consumers influence decision makers on fiscal policies? # Explain and discuss if and how this has changed over the past 5 years.

algebra
factor. 3x+x^2-10

CHEM 136
hey did you figure this out....if so what answers did you get

Physics
Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Algebra: Simple Interest
a loan of 25,000 its due in 9 months with an annual interest rate of 10%. Find the total amount that will be due.

physics
In a device known as an Atwood machine, two masses m1=10kg and m2=20kg are connected by rope over a frictionless pulley. What is the acceleration of each mass if the rope is massless?

Physics
Suppose with 200 N of force applied horizontally to your 1500 N refrigerator that is slides across your kitchen floor at a constant velocity. What are thre friction forces on the refrigerator?

Physics
As the initially empty urinary bladder fills with urine and expands, its internal pressure increases by 3600 Pa, which triggers the micturition reflex (the feeling of the need to urinate). The horizontal square section of the bladder wall with an edge length of 0.012 m. Becaus...

Physics
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 14.8 kg and 1.89 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the ...

Physics
A die is designed to punch holes of radii 2.17 x 10-2 m in a metal sheet that is 5.53 x 10-3 m thick. To punch through the sheet, the die must exert a shearing stress of 3.5 x 108 Pa. What force must be applied to the die? (Hint: Consider carefully which area is used in your c...

Physics
Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.6 x 10-2 m and a thickness of about 1.4 x 10-3 m. The shear modulus of cartilage is 1.2 x 107 N/m2. Suppose a shearing force of magnitude 18 N i...

physics
what is the variation of pressure in the sound wave if the sound intensity is 3.85x10^-8 W/m^2, the speed of sound is 343 m/s and the density of air is 1.2 kg/m3?

Physics
what is the variation of pressure in the sound wave if the sound intensity is 3.85x10^-8 W/m^2, the speed of sound is 343 m/s and the density of air is 1.2 kg/m3?

Physics
How would I do that?

Physics
A microphone has an area of 3.8 cm2. It receives during a 2.87 s time period a sound energy of 4.2x10-11 J. What is the intensity of the sound?

Physics
A microphone has an area of 3.8 cm2. It receives during a 2.87 s time period a sound energy of 4.2x10-11 J. What is the intensity of the sound?

Physics
The answer seems to be wrong when I submit.

algebra word problems
1) tina has 48 mL of a solution that is 25% acid. how much water should she add to obtain a solution that is 15% acid? 2) how many grams of sugar must be added to 60 grams of a 32% solution to obtain a 50% solution?

algebra word problems
you have 95 coins that total $10.75. the coins consist of only quarters and nickels. how many of each coin do you have?

ALgebra word problem
a coffee shop sells a cup of espresso for $2.00 and a cup of cappuccino for 2.50. on friday, rachel sold 30 more cups of cappuccino than espresso, and she sold $178.50 worth of espresso and cappuccino together. how many cups of each were sold?

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