Sunday

October 23, 2016
Total # Posts: 957

**Algebra 2**

V=df-di/tf-tf; solve for tf Please show step by step procedure so I can understand how to solve this. Many thanks.

*September 3, 2013*

**Physics**

block a 10 kg is connected to block b 20 kg by a mass less string on a horizontal surface (coefficient of kinetic friction 0.1). block b is connected by another string to a hanging mass M through a mass less pulley. what is the minimun value of M that will make the system move?

*August 15, 2013*

**astonomy**

Assume that earth and mars are perfect spheres with the radii of 6,371km and 3,390 km, respectively. Calculate the surface area of earth. b)calculate surface area of mars

*June 25, 2013*

**Chemistry**

Draw the product of the hydration of 2-butene.

*June 24, 2013*

**Chemistry**

Draw the product of the hydration of 2-butene.

*June 24, 2013*

**early childhood **

Routines, transitions, and group times have one thing in common, which is: A. change. B. a sense of certainty. C. emotional boredom. D. focused behavior.

*June 10, 2013*

**Physics-Change in Angular Momentum**

The planet has mass M and is spinning in a counterclockwise direction. I know the asteroid will increase the momentum of the planet, so the total change in angular momentum is equal to positive. m*v*R*sin(40) ?

*May 12, 2013*

**Physics-Change in Angular Momentum**

What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

*May 12, 2013*

**Physics**

What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

*May 12, 2013*

**business math**

The Book Nook makes four times as much revenue on paperback books as on hardcover books. If last month's sales totaled $124,300, how much was sold of each type book?

*April 28, 2013*

**Life orintation**

Explain 5 factors that contribute to the disease HIV AIDS

*April 28, 2013*

**AP CHEM**

Asirin (acetyl salicylic acid)is formed when salicylic acid reacts with acetic acid in a strong acid medium.This reaction converts the hydroxyl group on the salicylic acid to an ester while the benzoic acid group on the salicylic acid survives the reaction. Therefore, the ...

*April 5, 2013*

**statistics**

Compare the standard deviation for the heights of females 2.533 and males 4.21

*March 16, 2013*

**math**

Hey

*March 15, 2013*

**math**

Hey

*March 15, 2013*

**Algebra - REINY**

Hi - Do you think this is correct? BC = AD Area of Rectangle = (FB+AF).BC Area of Rectangle = 72 units squared Area = 1/2 bh Area 1 = 1/2 FB.BC Area 2 = 1/2 AF.AD 1/2 = AF.BC A1 + A2 = 36 units squared 1/2 FB.BC + 1/2 AF.BC 1/2 [FB.BC + AF.BC] 1/2 [BC (FB + AF) 1/2.72 units ...

*March 7, 2013*

**Algebra**

BA is shorter side of rectangle

*March 7, 2013*

**Algebra**

Rectangle ABCD has an area of 72 units squared. The length of BF is 4 units. Algebracially prove that the sum of the areas of triangles CBF and ADF are equal to 36 units squared.

*March 7, 2013*

**chemistry**

2.06 X 10^25 formula units of aluminum sulfate would have what mass?

*February 28, 2013*

**chemistry**

1040 grams of chlorine gas at STP would have what volume?

*February 28, 2013*

**chemistry**

If you are given 718 grams of lead (iv) oxalate, how many atoms of oxygen do you have?

*February 28, 2013*

**math**

2 1/4 hours plus 1 1/2 hours equals ?

*February 28, 2013*

**Biology**

When does DNA synthesis occur???

*February 27, 2013*

**Geography**

A case study on coastal management..... 300 words or more please ;[

*February 25, 2013*

**Maths**

23354256487567

*February 25, 2013*

**Math**

Please someone help with my pre calc question!

*February 11, 2013*

**pre calc**

How long would it take from 3000 to get to 8000 at 8% interest at compounded quarterly?

*February 11, 2013*

**math**

brett is having a party .first guest arrived by himself,3 guests then arrive together,each successive group arrives with 2 more guests than the group that entered previously.How many guests will have arrived when the twentieth group enters the room? please explain, thanks

*February 10, 2013*

**physics**

Comic-book superheroes are sometimes able to punch holes through steel walls. (a) If the ultimate shear strength of steel is taken to be 3.00 x 10^9 Pa, what force is required to punch through a steel plate 1.90 cm thick? Assume the superhero's fist has cross-sectional ...

*February 1, 2013*

**Physics -- please help**

What about the second part of the answer? And where did you get the 4.9 from?

*January 24, 2013*

**Physics -- please help**

Brittany throws a slingshot pellet directly at a target that is far enough away to take 0.190 s to reach. How far below the target does the pellet hit? Enter m as unit. How high above the target should she aim? Enter m as unit.

*January 24, 2013*

**Physics**

A pendulum and a mass spring system are both undergoing simple harmonic motion on Earth (use g = 10 N/kg). It is observed that every time the pendulum goes back and forth, the spring has gone up and down 12 times. If the pendulum has a length of 4 meters and the mass is 100 g...

*January 20, 2013*

**1/90**

What will be the next. Result of wining machine 85 20 34 65 90-78 18 83 27 17

*January 12, 2013*

**Science**

if the wood in the bowl contains only 1/16 of its original C-14, then its age is four half-lives of C-14.

*December 13, 2012*

**physice**

A deep-sea fisherman struggles to bring in a big salmon (see figure below). Find the force each hand must exert on the pole if the tension in the line is 155 N. Neglect the weight of the pole and assume that the force exerted by the left hand is directed along the horizontal...

*December 6, 2012*

**physics**

A weather vane initially at rest has a moment of inertia of 0.119 kg · m2 about its axis of rotation. A 48.0 g piece of clay is thrown at the vane and sticks to it at a point 21.0 cm from the axis. The initial velocity of the clay is 23.0 m/s, directed perpendicular to ...

*December 6, 2012*

**Math**

Writing in math Braden and bialy each bought a kazoo for $0.89.they each paid with a $1.00 bill. Explain two different ways to show their change.

*December 6, 2012*

**PHYSICS PLEASE HELP ME**

A particle with an initial linear momentum of 3.44 kg · m/s directed along the positive x-axis collides with a second particle, which has an initial linear momentum of 6.88 kg · m/s, directed along the positive y-axis. The final momentum of the first particle is ...

*November 29, 2012*

**physics**

A basketball of mass 0.602 kg is passed to a player of mass 83.0 kg who jumps off the floor while catching the ball. The player's center of mass is instantaneously at rest just before he catches the ball, which is initially moving at a velocity of 11.5 m/s, directed 30.0&...

*November 29, 2012*

**physics**

Two cars approach an ice-covered intersection. One car, of mass 1.22 103 kg, is initially traveling north at 10.6 m/s. The other car, of mass 1.69 103 kg, is initially traveling east at 10.6 m/s. The cars reach the intersection at the same instant, collide, and move off ...

*November 29, 2012*

**physics**

Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.208 kg, is initially to the left of the first block and moving to the right at 6.50 m/s. ...

*November 29, 2012*

**physics**

An object of mass 3.06 kg is released from rest and drops 1.75 m to the floor. The collision is completely inelastic. How much kinetic energy is lost during the collision?

*November 29, 2012*

**physics**

A missile of mass 110 kg is fired from a plane of mass 5500kg initially moving at a speed of 315 m/s. If the speed of the missile relative to the plane is 1060 m/s, what is the final velocity of the plane?

*November 29, 2012*

**physics**

A missile of mass 110 kg is fired from a plane of mass 5500 kg initially moving at a speed of 315 m/s. If the speed of the missile relative to the plane is 1060 m/s, what is the final velocity of the plane?

*November 29, 2012*

**physics**

A missile of mass 1.10 102 kg is fired from a plane of mass 5.50 103 kg initially moving at a speed of 3.15 102 m/s. If the speed of the missile relative to the plane is 1.06 103 m/s, what is the final velocity of the plane?

*November 29, 2012*

**physics**

A skater of mass 85.5 kg initially moves in a straight line at a speed of 4.70 m/s. The skater approaches a child of mass 36.5 kg, whom he lifts on his shoulders. Assuming there are no external horizontal forces, what is the skater's final velocity?

*November 29, 2012*

**math**

write 1.4times 10 to the eighth power in standard notation

*November 26, 2012*

**Economics **

Derive the profit level at this profit maximizing levels of p and q (p = 55) and q = 50. Where the demand curve for a monopoly is p=105-q. Its cost function is C= 100+5q?

*November 26, 2012*

**Analytical Chemistry**

Solute S has a partition coefficient of 4.3 between water (phase 1) and hexane (phase 2). (a) Calculate the concentration of S in hexane if [Swater] is 0.030 M (b) If the volume of water is 71.0 mL and the volume of hexane is 16.0 mL, find the quotient (mol S in hexane/mol S ...

*November 15, 2012*

**Math 150**

an online quiz is made of 10 multiple choice questions. each question on the quiz has choices a,b, or c. how many different ways are there to complete the quiz answering all 10 questions.

*November 13, 2012*

**Physics**

Find the gravitational force exerted by a 0.525 kg mass on a 0.109 kg mass 2.04 m away.

*November 13, 2012*

**physics HELP**

Thank you For your help You don't know how much its doin

*November 5, 2012*

**physics HELP**

A block a mass of .113 kg is slid horizontally with a acceleration of 2.612 m/s^2 What is the kinectic force and the coefficient of friction. Please show the steps in getting these answers,

*November 5, 2012*

**calculus**

How to sketch the graph of a differntiable function y = f(x) that has the given properties.Local minimum at (1,1) and local maximum at (3,3)

*November 3, 2012*

**physics HELP**

Im having problems getting the magnitude of the force in the problem i asked below i got the frictional and normal force please help me put these equations together

*October 31, 2012*

**physics**

A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force exerted by the plane on ...

*October 31, 2012*

**physics**

(d) is for this normal force into the plane and the frictional force down the slope

*October 31, 2012*

**physics**

A block weighing 11.05 N rests on a 28 degree incline. (a) Find the normal force exerted by the plane on the block out of the plane (b) Find the frictional force exerted by the plane on the block up the slope. c) Find the magnitude of the total force exerted by the plane on ...

*October 31, 2012*

**physics**

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 . What are the weights w1 and w2?

*October 25, 2012*

**phy**

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 N, and è = 26.6°. What are the weights w1 and w2?

*October 25, 2012*

**Physics**

Consider a NASA spacecraft in a circular orbit 440 km above the surface of Mars. What is the spacecraft's orbital period in hours?

*October 23, 2012*

**Math**

81 sq feet

*October 23, 2012*

**prealgebra**

0.85km/s=m/min

*October 22, 2012*

**English**

Hi i need help with an example of a Nominative Absolute sentences using an example from Emily Bronte's wuthering heights

*October 22, 2012*

**collegemathwordproblem**

180/252 is proportional to 100/x so 180x=25200 x=140

*October 22, 2012*

**collegemathwordproblem**

100percent - 30percent=70 percent so 70/28 is proportional to 100/x 70x=2800 x=40

*October 22, 2012*

**Phys Please Help!!**

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

*October 22, 2012*

**physics help**

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

*October 22, 2012*

**physics**

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

*October 22, 2012*

**phys!!! how do you do this**

f=m(g+a)

*October 22, 2012*

**phys!!! how do you do this**

ok i put that there it would be 95.76 N right this webassign is tellin me it isnt

*October 22, 2012*

**phys!!! how do you do this**

I still aint getting the right answer

*October 22, 2012*

**phys!!! how do you do this**

is a negative

*October 22, 2012*

**phys!!! how do you do this**

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

*October 22, 2012*

**algebrsa**

how do you get vy by itself 0=vy*5.39-.5*9.8*t

*October 17, 2012*

**physicss**

A cube with sides each 3cm long has 8 charges of Q = 25nC at each corner. What is the electric potential \Delta V at the center of the cube with respect to infinity, which is defined to have V=0 V?

*October 17, 2012*

**PHYICS**

how do you get the vy by it self when trying to get tionhe speed in the y direct

*October 17, 2012*

**PHYICS **

A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity it was kicked? magnitude and direction above horizontal

*October 17, 2012*

**PHYSICS ASAP!**

I am not comin up with the same answers

*October 17, 2012*

**PHYSICS ASAP!**

A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction

*October 17, 2012*

**PHYICS NEED HELP BAD!**

IT IS NOT COMING OUT RIGHT

*October 17, 2012*

**PHYICS NEED HELP BAD!**

NEED HELP BAD

*October 17, 2012*

**PHYICS NEED HELP BAD!**

A football is kicked 66.6 meters. If it is in the air for 5.39 seconds, with what initial velocity was it kicked? magnitude and direction above horizontal

*October 17, 2012*

**physics**

NEED HElP

*October 17, 2012*

**physics**

A football is kicked 66.6 meters. If the ball is in the air for 5.39 seconds, with what initial velocity was it kicked?

*October 17, 2012*

**math**

36+24=60

*October 17, 2012*

**physics**

A baseball player hits a home run over the left-field fence, which is 104 m from home plate. The ball is hit at a point 1.04 m directly above home plate, with an initial velocity directed 28.5° above the horizontal. By what distance does the baseball clear the 3.00 m high ...

*October 16, 2012*

**physics**

A football is kicked 66.6 meters. If the ball is in the air 5.39 s, with what initial velocity was it kicked?

*October 16, 2012*

**physics**

A fox fleeing from a hunter encounters a 0.630 m tall fence and attempts to jump it. The fox jumps with an initial velocity of 7.20 m/s at an angle of 45.0°, beginning the jump 2.18 m from the fence. How far does the fox clear the fence

*October 16, 2012*

**chemistry**

A 2.622 g sample of almonds is ignited and used to melt ice in a can. a. If the almond sample melted 15.24g of ice what is the heat produced in Kcal grams of nuts? d.If the heat from the almond sample was used to heat 100mL of water at 0.0 degree centigrade, what would be the ...

*October 15, 2012*

**Physics**

Two blocks rest on slopes of unequal angles, connected by a rope passing over a pulley. If the blocks equal masses, will they remain at rest? Why? Neglect friction.

*October 14, 2012*

**Physics**

Post this question on homeworkfor5 dot com and get an answer quick

*October 13, 2012*

**Algebra**

homeworkfor5 website has all answers for math

*October 12, 2012*

**rounding decimals**

what is 3.65 rounded to the nearest hundreth?

*October 12, 2012*

**Science**

If 1/10 of 1 percent of the population gets a flu vaccine what will the ratio of people treated be?

*October 9, 2012*

**Math**

If a man is 4ft and cast a 3ft shadow how long of a shadow would an 18ft flagpole cast?

*October 9, 2012*

**math**

i think its 351

*October 5, 2012*

**math**

100×289=200

*October 1, 2012*

**Physics**

Block A has a mass of 2.60 kg and rests on a smooth (frictionless) table and is connected to block B, which has a mass of 2.40 kg, after passing over an ideal pulley, as shown. Block B is released from rest. What is the acceleration of the masses?

*September 30, 2012*