Monday

September 22, 2014

September 22, 2014

Number of results: 28,198

**WTI**

1LB of ice at 20 deg f exerts its force downward. after the ice has absorbed 200 BTU's what direction will the force be exerted? After absorbing 2000 BTU's what direction will the force be exerted?
*March 23, 2013 by Gilbert*

**research and evaluation class**

describe joint probability for independent events and give an example of how you would calculate it. How is this different than conditional probability? The following payoff table gives the return on three alternative business decisions based on three possible scenarios – down...
*November 18, 2010 by sue*

**relativity **

A particle called neutral pi meson (or pion) decays into two photons and nothing else. If the pion is initially at rest (rest mass 135Mev). (a) what are the energies of the photons ? (b) What are the magnitudes of the momenta of the photons (c) How are they moving with respect...
*June 8, 2011 by wally*

**Physics**

A 0.0160-kg bullet traveling horizontally at 396 m/s strikes a 3.95-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.06 m, how far from the table does the block hit the floor? -- First I used momentum to find ...
*February 9, 2010 by Sarah*

**inter med algebre**

these were extra credit quest to help grade but i could not do these i asked so many people there were stumped can who gets this ques can u do the whole promlem pleasw. Questin; Pick a car and finf its top speed . Assuming that your chosen carnreaches its top speed at the top ...
*December 13, 2010 by Linda P**

**Physics-bobpursleyplease check**

This is the question I posted about two hours ago and I worked it out two ways-could you scroll down and check it, please?If I have a roller coaster, and hill 1 height is 50cm and hill height 2 is 25 cm and the PE is .9 as it approaches the top of hill 2, how do I calculate ...
*November 4, 2010 by Joey*

**EMERGENCY!!!**

HELLO! I DON'T KNOW WHAT'S GOING ON WITH ME LEFT HAND. MY PINKY IS SWOLLEN AND I HAVE NO IDEA WHY MY PINKY IS SWOLLEN. I DON'T REMEMBER INJURING MY LEFT HAND OR MY PINKY IN ANY WAY TODAY AND NONE THIS PAST WEEEK. WHEN I BEND MY PINKY I FEEL NUMNESS AND TIGHTNESS. THE TOP PART ...
*November 19, 2007 by Mack*

**physics**

A mass makes a projectile motion on a table (like the one in the projectile motion experiment) with inclination angle of the table as α=6o. The initial velocity and the initial angle are is 100 cm/s and 30 deg. respectively. What is the maximum height hmax ? (sin(6)=0.1, ...
*December 21, 2012 by anonymous*

**physics**

a .3kg mass moving on a horizontal, smooth incline has a speed of 5m/s and hits a spring with spring constant 3.0N/m. What is the maximum amount that the spring is compressed? I did Ei=PE + KE = Ef= PE =1/2mv(i)^2 + mgH = 1/2 k (y2-y1) =(1/2)(.3)^2 + (.3)(9.8)H=(1/2)3(y2-y1) ...
*June 14, 2009 by sarah*

**Physics**

A man cycles up a hill whose slope is 1in20. If themass of the man and the cycle is 150kg and the man covers a distance of 100m along the incline, calculate the work done by theman.
*November 27, 2012 by Aditya*

**Applied Calculus**

Suppose that an object is thrown down towards the ground from the top of the 1100-ft tall Sears Tower with an initial velocity of – 20 feet per second (the negative velocity indicates that the object is moving towards the ground). Given that the acceleration due to gravity of ...
*April 20, 2012 by Marie*

**Econ MC**

Internalizing a positive externality through a government subsidy will cause the industry's supply curve to a. remain unchanged. b. shift down by an amount less than the subsidy. c. shift down by anamount equal to the subsidy. d. shift down by an amount greater than the ...
*April 17, 2007 by Econ*

**Physics**

You shoot a rock with a wrist-rocket straight up, it takes 6 seconds for it to come back down (IGNORE THE HEIGHT YOU SHOT IT FROM.) How high did the rock go? what was the rock's speed initially going up (V1)? How fast is it traveling when it hits the ground on the way down?
*October 21, 2011 by Dakota*

**Physics**

A worker applies a constant force of magnitude F = 339 N on a crate in a direction è = 26.1o above the horizontal as he pulls it across a level floor through a distance of s = 7.20 m. The mass of the crate is m = 53 kg and the coefficient of kinetic friction between the floor ...
*December 18, 2012 by Sara H*

**Engineering Maths**

A perfectly cylindrical container standing upright with a top and bottom (an oil drum or coke can for example) has an empty mass of M and a height of H. It is filled with a liquid of uniform density of variable mass m up to height h. When the container is full the centre of ...
*May 17, 2011 by Karl Haxell*

**pop**

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.
*February 19, 2012 by Anonymous*

**Physics**

What is the coefficient of friction between a sled and a plane inclined 30 degrees from the horizontal if the sled just slides without accelerating when given an initial push?
*September 21, 2014 by Jen*

**physics**

Two packing crates of masses 7.88 kg and 4.62 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 4.62 kg crate lies on a smooth incline of angle 40.0°. a) Find the acceleration of the 4.62 kg crate
*October 5, 2012 by Anonymous*

**computers**

You’re asked to design a network for use in a training environment. It should be mobile, easy to set up, and simple tear down. Speed is not an issue. Develop a network design that accommodates these requirements and keeps costs down.
*March 30, 2010 by Anonymous*

**niit**

you are asked to design a network for use in a training environment.It should be mobile,easy to set up, and simple to tear down.Speed is not an issue.Develop a network design that accommodates these requirements and keeps cost down.
*July 31, 2010 by eben*

**biology**

An individual with Down's syndrome has repeat length alleles of size 8, 13, and 14 for a microsatellite near the centromere of chromosome 23. Her mother is homozygous for the 13 repeat allele. Her father is heterozygous for 8 and 14. What can we say about the origin of Down's ...
*October 17, 2011 by Akhil*

**Economic**

Why might a profitable motel shut down in the long run if the land on which it is located becomes extremely valuable due to surrounding economic development? What kinds of costs are involved in making a decision to shut down?
*December 10, 2013 by wayne*

**English**

Identify the part of speech or the form of a part of speech in the underlined portion of the next sentence. The groundhog looked down and saw its shadow. A. Preposition B. Conjunction C. Adjective D. Adverb down is the underlines word I think it is D
*April 7, 2014 by Angela*

**English**

1. When he was walking down the street, he ran into Miss Fairchild. (Does 'down' mean downward' or 'along' or 'on'?) 2. He was walking down the street. 3. he was walking along the street. 4. He was walking on the street. 5. He was walking up the street. (Is #2 the opposite of...
*September 3, 2014 by rfvv*

**physics**

The small mass m sliding without friction along a looped track is to remain on the track at all times, even at the very top of the loop of radius r. a) In terms of the given quantities, determine the minimum release height h b) If the actual release height is 5h, calculate the...
*November 24, 2012 by Emma *

**math**

Evan is making a table that will be created in the shape of the figure below. The table top is a triangle attached to a rectangle. To purchase the right amount of paint, he needs to know the area of the table top. He can only spend $10 on paint, which is enough to cover 150 ...
*June 17, 2014 by nana*

**Physics(please bobpursley)**

A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 6.7 m/s. The coeﬃcient of kinetic friction between the sled’s runners and the hard, icy snow is 0.048, and the girl and sled together weigh 615N. The acceleration of gravity is 9....
*October 21, 2012 by George*

**math**

Help!! I cant find this word fesselation. I looked in books and the internet nothing please help Spell it this way: tesselation ok do you know wht it means tesselation. I tried it both ways tesselation and fesselation.F ound nothing HELP!!!! I cant find tesselation and its due...
*October 15, 2006 by vaneesa*

**Math Prob/solving**

As Frank drives to work he has to pass through three lights. The probability that any light is green is 39%. Estimate the probability that exactly two lights will be green. Use the following list of digits which was taken from a table of random numbers. In each pair of digits...
*May 27, 2010 by Lisa*

**Physics**

In preparation for this problem, review Conceptual Example 7. From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 6.46 m/s. (a) What is the acceleration (magnitude and ...
*December 13, 2011 by T*

**Physics**

A cannon ball is fired from ground level with a speed of 86.0 m/s at an angle of 32 deg. above the horizontal. A 8.5 m tall wall is located 265 m away from the cannon. By how much does the cannon ball clear the wall? In the previous problem, what is the speed of the cannon ...
*March 2, 2014 by Yarielis*

**English**

Can you please check these other sentences? Thank you very much. 1) Robinson makes Friday a slave. He calls him Friday because of the day the savage was saved. Better: after the day he is rescued/after the day of his rescue. 2) There were specific references to the names of ...
*March 20, 2012 by Matthew*

**Calculus**

A fence 5 feet tall runs parallel to a tall building at a distance of 2 feet from the building. We want to find the the length of the shortest ladder that will reach from the ground over the fence to the wall of the building. Here are some hints for finding a solution: Use the...
*July 17, 2013 by J*

**Physics**

A snowmobile does 400J of work in towing a sled to the top of a hill. During th etrip up the hill, it took 50J to overcome the work of friction. What is the potential energy of the motionless sled at the top of the hill? Well I know that the formula for potential energy is ...
*November 15, 2007 by Elizabeth*

**physics**

A glass is slid across a table top, goes of the edge and falls to the floor below. The table is 0.860 m high and the glass lands 1.77 m from the edge. (a) With what velocity (m/s) did the glass leave the table top? (b) What was the direction of the glass's velocity (degrees ...
*August 6, 2011 by waqas*

**science**

the potential energy of a golf ball in a hole is negative with respect to the ground. Under what circumstances(if any) is the ball's kinetic energy negative? Its rest energy? The kinetic energy of the ball is zero when it isnt moving, whether it is ion the hole or not. Kinetic...
*February 19, 2007 by tasha*

**maths-urgently needed**

From the top of a tower the angle of depression of an object on the horizontal ground is found to be 60degree. On descending 20 m vertically downwards from the top of the tower, the angle of depression of the object is found to be 30degree Find the height of the tower.
*February 1, 2013 by Anonymous*

**Biology**

If .03 M of sucrose and .02 M of glucose rest inside a cell and .01 M of sucrose, glucose, and fructose rest outside in the environment, which solutes will exhibit next diffusion into the cell and out of the cell?
*February 15, 2007 by Bioq*

**physics**

A meterstick is at rest in an inertial frame S2.If S2 moves with a speed of 0.8 c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Answer in units of m.
*March 28, 2011 by kay*

**Cal 1**

A trough is 10 ft long and 2.6 ft across the top. Its ends are isosceles triangles with an altitude of 2.1 ft and vertex down. Water is being pumped into the trough at a rate of 2.4 ft3/min. How fast is the water level rising when the water is 1.39 ft deep? Answer in units of ...
*November 3, 2011 by ninzyy*

**math**

Coming down the long hill,Nelson averaged 24 miles per hour. If it took him 5 minutes to come down the hill, how long was the hill? Please help
*September 30, 2010 by Anonymous*

**math**

shawn is writing down the family recipes in a cookbook. he has 21 recipes left to write down. he has 3 pagegs left to fill up. if he wants to put the same number of recipes on every page, how many go on each?
*December 7, 2011 by Anonymous*

**Science**

2. Summer occurs on the hemisphere of Earth that is _____. turned away from the sun tilted toward the sun tilted away from the sun turned toward the sun 3. Earth has a(n) _____ and _____ magnetic pole, just as a bar magnet has opposite magnetic poles at each of its ends. up, ...
*January 15, 2013 by Jman*

**Wile E. Coyote**

The determined Wile E. Coyote is out once more to try to capture the elusive roadrunner. The coyote wears a new pair of power roller skates, which provide a constant horizontal acceleration of 15 m/s2, as shown in the figure below. The coyote starts off at rest 70 m from the ...
*September 12, 2012 by D ~ Day*

**Physics**

What is the minimum work needed to push a 1050 kg car 460 m up along a 17.5° incline? (a) Ignore friction (b) Assume the effective coefficient of friction retarding the car is 0.30
*October 15, 2009 by Jen *

**physics help!!!**

What is the minimum work needed to push a 900 kg car 460 m up along a 17.5° incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.30?
*November 17, 2009 by greg*

**Physics**

What is the minimum work needed to push a 1075 kg car 230 m up along a 17.5° incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.30?
*March 21, 2014 by Hope*

**Relativity**

A particle called neutral pi meson (or pion) decays into two photons and nothing else. If the pion (whose rest mass is 135Mev) is initially at rest (a) what are the energies of the photons? (b)what are the magnitudes of the momenta of the photons? (c) How are they moving with ...
*June 7, 2011 by Deforest*

**reading**

what does it means when it says: •Fold the two sheets of construction paper in half lengthwise. Crease them well and put three staples across the top. You will have four pages. Cut the second, third and fourth pages into three equal pieces about a half-inch from the top of ...
*August 17, 2012 by Celest*

**math**

How do I calculate how much in total (including the down payment) I will have paid for this condo when I know the total amount, the down payment, the mortgage, and the monthly payment?
*August 6, 2013 by Madeline*

**calculus**

Being some distance from a mountain a man looks up at a 9 degree angle to see the top of the moutain. he then moves 13 miles away from the mountains at looks up at a 3.5 degree angle to see the top of the mountain. How tall is the mountain?
*December 4, 2011 by john*

**Algebra I**

A 15 foot flagpole is mounted on top of a school building. If the top of the flagpole forms a 31° angle with the ground 50 ft from the base of the building, about how tall is the school building? 28 feet <-My answer 15 feet 30 feet <-second choice 11 feet
*September 10, 2012 by Panda*

**physics**

A skateboarder with mass ms = 42 kg is standing at the top of a ramp which is hy = 3.7 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is vf = 6.3 m/s. Write an expression for the work, Wf, done ...
*October 26, 2013 by Anonymous*

**math**

There is a slide in the park that is 18 feet long. The ladder to the top of the slide is 7.5 feet long. If the ladder and the slide are perpendicular, what is "D", the distance from the top of the slide to the ground? Explain how you got your answer.
*March 10, 2013 by sara*

**MATH**

There is a slide in the park that is 18 feet long. The ladder to the top of the slide is 7.5 feet long. If the ladder and the slide are perpendicular, what is "D", the distance from the top of the slide to the ground? Explain how you got your answer.
*March 10, 2013 by SARA*

**math**

SHAWN IS WRITING DOWN THE FAMILY RECIPES IN A COOKBOOK .HE HAS21 RECIPES LEFT TO WRITE DOWN.HE HAS 3 PAGES LEFT TO FILL UP.IF HE WANTS TO PUT THE SAME NUMBER OF RECIPES ON EVERY PAGE,HOW MANY GO ON EACH
*October 12, 2011 by lattane*

**physics**

help please A sailboat is traveling east at 8.0 m/s. A sudden gust of wind gives the boat an acceleration a = (1.30 m/s2 35° north of east). What is the boat's speed 10.0 seconds later when the gust subsides? What is the boat's direction (in deg) 10.0 seconds later when the ...
*September 26, 2011 by .....*

**Short Story (suspense)**

Feeling more secure, you start off in the direction of home. Past the park and the corner shop. You’re getting closer to home now. It’s still a long way, about 15 minutes to go. And then you hear it…Tap, Tap, Tap……… She shrieked as a hand came down heavily on her shoulder...
*January 19, 2009 by Larry*

**physics**

A centrifuge rotor rotating at 7,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30 m·N. If the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.0710 m, through how many revolutions will the ...
*November 10, 2009 by jennifer*

**Physics**

A metal cylinder with a area of 0.01m^2 and height of 0.1m is suspended levelly in water with a thin string. a)What is the water pressure on the top and bottom of the cylinder if the cylinder top is 1m below the water surface? And the amount of buoyant force? B) calculate the ...
*April 24, 2012 by Jermaine*

**Math**

Charlie is making a toy silo for his children. The silos height is three times it's radius. He is also adding a dome shaped top that is a half sphere. If the total surface area of the silo, when assembled is 100 square inches , what is the height of the silo(i.e., what is the ...
*May 22, 2012 by Dorothy*

**Calculus and vectors**

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top. An equation that can ...
*January 22, 2014 by Annie*

**Physics**

For each of the following scenarios, indicate whether the oscillation period of the pendulum becomes shorter, longer or remains unchanged. Note: you must clearly mark your answer (for example, highlight it in red) from the multiple-choice list below and you must provide an ...
*July 10, 2013 by Anonymous*

**Clark/Networking**

You’re asked to design a network for use in a training environment. It should be mobile, easy to set up, and simple to tear down. Speed is not an issue. Develop a network design that accommodates these requirements and keeps costs down.
*February 16, 2011 by Merrie*

**physics**

Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.774 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m
*August 28, 2011 by Frank*

**physics**

a car is moving down a street at 55km/h.A child suddenly runs into the street. If it takes a driver 0.75s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*February 4, 2012 by erika*

**physics**

Ann is driving down a street at 54 km/h. Suddenly a child runs into the street. If it takes Ann 0.722 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m
*January 23, 2013 by gera-pleaseeeee*

**physics**

A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.3 m/s and the tension in the rope is T = 22.4 N. Now a peg is placed 4/5 of the way down the pendulum’...
*September 28, 2012 by hater of physics*

**trigonometry**

From lookout tower 80ft. high, a man observes from a position 6.5 ft. below the top of the tower that the angle of elevation of the top of the certain tree is 12deg40mins and the angle of depression of its base is 70deg20mins. If the base oof the tower and the base of the tree...
*August 14, 2010 by Winsel*

**physics**

a student could either pull or push , at an angle of 30 deg from the horizontal, a 50-kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and the surface is .20 the crate is to be moved a horizontial distance of 15-m (a) compared to ...
*January 26, 2008 by melissa*

**Physics **

Problem 1- In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m . a) What is her gravitational potential energy on the ...
*December 12, 2013 by Anonymous*

**physics**

An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)
*July 15, 2014 by alisha*

**math**

The head of a round piston has a pressure of 210 psi pushing down on it. The piston is 3 inches in diameter. What is the force pushing the piston down?
*March 30, 2008 by walt*

**Physics-bobpursley please check**

This is the question I posted about two hours ago and I worked it out two ways-could you scroll down and check it, please?If I have a roller coaster, and hill 1 height is 50cm and hill height 2 is 25 cm and the PE is .9 as it approaches the top of hill 2, how do I calculate ...
*November 4, 2010 by Joey*

**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?
*November 22, 2010 by Mike*

**principles of physics**

Two identical gliders slide toward each other on an air track. One moves at 2 m/s and the other at 1 m/s. If they stick together, the combination slides at ____________________. A) 0.5 m/s. B) 1 m/s. C) 1.5 m/s D) 2 m/s E) 2.5 m/s.
*February 19, 2012 by britches*

**physics**

A 650 N student is Rollerblading at a velocity of 7.8 m/s [W] when the student trips and slides horizontally along the trail, coming to a stop 0.95s. Determine the students average acceleration
*April 5, 2012 by Melissa*

**MATH**

The eaves of a roof sloping at 23° overhand the walls, the edge of the roof being 75 cm from the top of the wall. The top of the wall is 5.4 metres above the ground. What is the height above the ground of the edge of the roof, to the nearest centimeter?
*January 27, 2011 by Rin*

**social studies(again)**

i need a word about california that starts with a P
*June 11, 2008 by Andrew*

**Health**

Why is it that as we age, our hair starts turning white? What causes this? -MC
*February 26, 2009 by mysterychicken*

**history**

a systems of values. hint:it starts with ph and the 6th letter is s.please help!!!!!!!!!!!!!!
*March 10, 2009 by ghgfhkj*

**7th grade English**

what is a 7 letter adverb for pleasantly that starts with A and ends with LY
*April 5, 2010 by Cody Garner*

**Kinematics**

A car has an acceleration of 2 m/s2. What is its speed 3 seconds after it starts moving?
*February 1, 2011 by Randy*

**Physics**

If a 75-kg skater starts his skate at 8.0m, at his lowest point (height = 0), what is his velocity?
*February 4, 2011 by maritza*

**Spanish crossword**

Opposite of getting off plane. Starts with R and is 14 letters.
*February 4, 2012 by Andrew*

**Trigonometry**

frrom outlook tower 80ft. high, a man observes from a position 6.5ft. below the top of the tower that the angle of elevstion of the top of certain tree is 12deg40mins and the angle of depression of its base is 72deg20mins. If the base of the tower and the base of the tree are ...
*August 10, 2010 by Winsel*

**english**

I need help!!!I am suppose to find the sentence with an error in Fragments, Comma Faults, Fused Sentences (errors that result when part of a sentence is punctuated as a complete sentence or two complete sentences are incorrectly joined) a. Unlike many of their counterparts at ...
*September 27, 2009 by Abriel*

**chemistry... HELP**

Equilibrium constant question!!!? Standard reduction potentials Reduction half-reaction E(V) Ag+(aq) + e- ---> Ag (s) 0.80 Cu ^2+ (aq) + 2e- ---> Cu (s) 0.34 Sn^4+(aq) + 4e- ---> Sn (s) 0.15 2 H+(aq) + 2e- ---> H2 (g) 0 Ni^2+(aq) + 2e- ---> Ni (s) -0.26 Fe^2+ (...
*November 3, 2012 by Ann*

**Physics/Science #2**

A rock is thrown verticaly upward from ground level at time t = 0. At t = 1.65 s it passes the top of a tall tower, and 0.95 s later it reaches its maximum height. What is the height of the tower? height = _______ m First, find the initial velocity from the height of the tower...
*January 25, 2007 by TechnoBoi11*

**physics**

A jet plane lands with a speed of 87 m/s and can accelerate at a maximum rate of -5.30 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? What is the actual minimum distance needed to stop ...
*September 15, 2011 by ashley*

**physics**

A daredevil decides to jump a canyon of width 8.4 m. To do so, he drives a motorcycle up an incline sloped at an angle of 12.6 ◦ . The acceleration of gravity is 9.8 m/s 2 . What minimum speed must he have in order to clear the canyon? Answer in units of m/s
*November 19, 2012 by Anonymous*

**Physics**

A daredevil decides to jump a canyon of width 6.5 m. To do so, he drives a motorcycle up an incline sloped at an angle of 9.45◦. The acceleration of gravity is 9.8 m/s2 . What minimum speed must he have in or- der to clear the canyon? Answer in units of m/s
*June 20, 2014 by Kirbi*

**physics**

What is the minimum work needed to push a 900 kg car 890 m up along a 7.5 degree incline? (a) ignore friction (b) Assume the effective coefficient of friction retarding the car is 0.20.
*November 8, 2010 by amy*

**algebra 2**

What are two different transformations that will transform f(x)=5x+3 into g(x)=15x-12? A) 1. A vertical shift 15 units down, followed by a horizontal compression by a factor of . 2. A vertical stretch by a factor of 3, followed by a vertical shift 21 units down. B)1. A ...
*July 4, 2008 by Fefe*

**Physics Help**

An industrial die machine is used to stamp out holes in pieces of sheet aluminum. the die strikes the surface of the street of metal at a speed of 10 m/s, passes through the 0.635 cm thick sheet, reverses its direction, and is again moving at 10 m/s as it passes the top ...
*September 14, 2014 by Kimberly*

**Physics**

An industrial die machine is used to stamp out holes in pieces of sheet aluminum. the die strikes the surface of the street of metal at a speed of 10 m/s, passes through the 0.635 cm thick sheet, reverses its direction, and is again moving at 10 m/s as it passes the top ...
*September 15, 2014 by JuYoung*

**Physics**

A 70.0 kg base runner begins his slide into second base while moving at a speed of 4.0 m/s. The coefficient of friction between his clothes and Earth is .70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction ...
*December 5, 2006 by Becca*

**Pre-CalcPlease check**

Please check: 1.Write in expanded form: this is a sigma notation- 4 on top signma in middle k=1 on bottom to right of sigma is (k-1)(k-2) I solved: k=1 (1-1)(1-2)=0(-1)=0 K=2 (2-1)(2-2) = 1(0)=0 k=3(3-1)(3-2)=2(1)=2 k=4 (4-1)(4-)=3(2)=6 answer: 0+0+2+6 2. Write 4+9+16+25+36+49...
*December 30, 2011 by Bethany*

**Math**

A single die is rolled. (a) What is the probability that the number on top is a 3. (Give your answer correct to two decimal places.) (b) What is the probability that the number on top is an odd number. (Give your answer correct to two decimal places.) (c) What is the ...
*May 28, 2013 by DeeDee*

**Math**

A single die is rolled. (a) What is the probability that the number on top is a 3. (Give your answer correct to two decimal places.) (b) What is the probability that the number on top is an odd number. (Give your answer correct to two decimal places.) (c) What is the ...
*May 29, 2013 by DeeDee*

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